Revolutionizing Infrastructure with Tata BlueScope’s Advanced Steel Coatings

Steel stands as a formidable engineering marvel, serving as the backbone for innumerable constructions worldwide. With enduring resilience against harsh weather conditions, it has supported countless organizations in building from the ground up. Despite its time-tested reliability, corrosion poses a persistent challenge. Caused by exposure to moisture, oxygen, and environmental factors, corrosion not only affects steel’s health but also has broader economic implications for a country.

According to the Indian Stainless Steel Development Association: India suffers a loss of around USD 110 billion every year due to corrosion which leads to the projects failing to complete their estimated life cycle. Corrosion is a huge spot of bother than how negligible it appears, and hence, it is essential to preserve the integrity and longevity of the steel.

One of the important elements that increases the risk of corrosion is iron. Steel is an alloy that carries a huge percentage of iron. The interaction of iron and oxygen leads to iron oxide, referred to as rust. The rust weakens and reduces the lifecycle of steel. To safeguard the integrity of the steel and tackle the pervasive issue of corrosion of steel, the technique of coating plays a pivotal role. It serves as one of the proactive measures acting as a shield on the steel surfaces. It prevents airborne pollutants and corrosive substances from reacting with the steel surface. Today countless structures stand testimony to durability of the steel because of coating.

Coating itself is a state-of-the-art technology that has evolved with research advancements in processes, and the development of technology. Apart from preventing corrosion, the coating also adds an aesthetic value to the steel by availing color options, pattern choices, uniform appearance, versatility in design applications, and ease of maintenance. Eventually, the goal of a buyer is to enhance the overall visual of the structure without compromising on its life. Coating is one stop for both demands. It is, however, equally important for a buyer to understand the segments of coating to make informed choices. Coating is of multiple types. The polyester coating works as a protective layer widely used in manufacturing, automotive, and construction sites. One of the important benefits of using polyester materials is its resistance to wear and tear, reflecting its ability to withstand harsh environmental conditions, and its durability. It also resists mildew and mold growth, acting as a shield in areas exposed to moisture. This quality of polyester material makes it a convenient coating for steel that is exposed to multiple challenges.

Based on its usage and application, polyester is factored into multiple types: Super Durable Polyester (SDP), Regular modified Polyester (RMP), Silicon Modified Polyester (SMP), and Polyvinylidene Fluoride (PVDF) are the four types of coating that are less discussed in the construction and architectural industries but carries huge weightage in terms of protection and aesthetic appeal it provides to the surface of metal and steel. Majorly, SDP and RMP coatings are widely used for outdoor and indoor usage, respectively.

Super Durable Polyester (SDP) is formulated to provide excellent resistance to UV radiation, sunlight, rain, and varying temperatures. Apart from that this type of coating carries several factors such as corrosion resistance, chemical resistance, long-term color retention, and flexibility where it carries the ability to suffer moderate levels of deformity without breaking.

Regular Modified Polyester (RMP) is a type of coating that is majorly used on galvanized steel. It is commonly used in the construction industry and for architectural applications. The RMP is preferred for its matte finish coating and durability.

Mr. XYZ from TATA BlueScope, who is an expert on steel coating said, “SDP based steel coatings are comparatively stronger and more durable than the RMP ones. SDP coating can withstand harsh weather conditions, keeps color vibrant on the construction in the long run, and is ideal for outdoor projects. RMP on the other hand loses its edge as it is more suited for moderate conditions, majorly preferred for indoor usage. RMP-based coating could be cost-efficient, but it fails to stand rigid and durable when exposed to harsh weather conditions.”

Tata BlueScope Steel with its innovative products like Durashine roof sheet caters to the SDP-based coating segment owing to the numerous benefits it carries in comparison to RMP-based products. Its insulated roofing sheets have the coating developed by the organization that has benefitted the buyers in battling harsh weather conditions, leading to the construction remaining unaffected for more than decades. The SDP-based coating is more environmentally sustainable than the RMP because of its increased durability and recyclability. Its waterproof sheet for roofs ensures superior protection against moisture, infiltration and weathering.

TBSL’s advanced coloured roofing sheets, COLORBOND® steel has been integral in numerous iconic projects over the last ten years, especially in the railway and metro sectors. They have also made their mark in crafting industrial steel buildings. For instance, they have supplied over 1600 MT of COLORBOND® steel for various metro projects across the country. COLORBOND® steel was chosen for its strength, corrosion resistance, and suitability for harsh weather conditions. It has also been used in other public utility spaces like bus stands, community halls, and airports, transforming these spaces both functionally and aesthetically. One specific example includes the Valpoi Bus stand and Community Hall in Goa, where COLORBOND® steel was used for its versatility and aesthetic appeal. Additionally, COLORBOND® steel was used in the DRDO Aircraft Hanger in Bangalore and the Chandigarh International Airport, highlighting its application in critical infrastructure projects.

Tata sheet for roof committed to sustainability and improvement of our environmental performance. The paint produced by Tata BlueScope Steel is a lead-free paint system and is 100% recyclable. Our principles on sustainability are non-negotiable which includes reducing waste material generation, storing or disposal at source, reusing waste material on-site, and recycling waste materials offsite. Durashine Roofing of Tata BlueScope Steel leads the way in making top-quality coated steel and is dedicated to delivering on its promises to help turn dreams into reality. The Roofing sheets of Tata BlueScope Steel leads the way in making top-quality coated steel and is dedicated to delivering on its promises to help turn dreams into reality.

Additionally, Tata BlueScope Steel made a notable appearance at the Steel Construction Expo 2022, held in Hyderabad. Here, the company showcased its new-age colour-coated steel solutions, emphasizing green and sustainable practices. They received various accolades and certifications at the event, including the GRIHA (Green Rating for Integrated Habitat Assessment) product certification for both Metal Coated and Colour Coated Steel. Their COLORBOND® steel was recognized by the CII Indian Green Building Council (IGBC) as a Green Product in Green Building Ratings. Moreover, the company published an Environmental Product Declaration (EPD) for COLORBOND® steel and ZINCALUME® steel, marking a first in their product category. These achievements underscore Tata BlueScope Steel’s commitment to environmental sustainability and its efforts to provide transparent data about the environmental sustainability of their products.

With a wide range of steel roofing sheets, Tata Bluescope sheet is not just participating in building projects; it is actively contributing to a future where everyone has access to safe and sustainable housing. This commitment reflects the very essence of the ‘Shelter for All’ initiative, ensuring that dreams of secure and enduring shelters become a reality for communities across India.

Redefining Grain Storage

Significance of choosing the right material for grain storage

Inadequate infrastructure for storage is the major cause of post-harvest losses for all kinds of food grains in India, which is estimated at around 15% by Food Corporation of India. Usually grains are stored in bags in warehouses with many associated losses, including spillage, rodent attacks, bird droppings, theft/pilferage, etc.

A strong thrust towards modern and scientific means of grain storage is essential.

Steel silos at present are the best alternative for grain storage, thanks to their versatility, easy assembly, hygienic handling and low storage cost. Over the years, bulk material storage silos made of metal have played an important role in conservation of key natural or man-made resources. Large steel silos can be used to store various agricultural, commercial and industrial products such as grains, cement, fly ash and mineral materials, thus meeting the storage needs of most enterprises in modern society.

Most critical amongst them is grain and food storage as well as food processing units, that demand utmost hygiene and protection from external factors!

Many conventional warehouses today lack adequate ambience such as proper temperature and moisture which greatly affects the quality of grains and leads to damage and wastage of the produce. The grains get infested with moulds and insects due to lack of safe and scientific storage practices.

What is a Steel Silo?
A steel silo is a cylindrical storage warehouse made of galvanized coils. Steel silos can also be divided into spiral steel silos and assembled steel silos. The structural principle of the steel silo is very different from the traditional warehouse. They not only optimize space as compared to traditional storage options but are also an economic solution with long-lasting performance.

Characteristics of a Steel Silos

✓ They offer high tensile strength

✓ Designed to withstand snow loads & strong winds

✓ Built with a robust framework, enable optimum storage conditions

✓ Designed to adhere to soil conditions

✓ Economical Grain storage options than warehouse storage

✓ Termite, fire and mold resistant

✓ Easy and Quick to install

The storage industry’s demand for non-conventional, futuristic, lightweight and stronger material; has led to a well-researched, durable and the most trusted product in form of ZINCALUME® steel.

Well researched and scientific materials used for storages such as ZINCALUME® Steel help our farmers and exporters to keep the quality of the produce in line with international requirements thus reducing losses. This also helps in getting better prices in the global markets apart from savings, by reduction in losses and rejections by importers.

Most Advantageous Material for Silos:
Best known for its exceptional performance, ZINCALUME® steel manufactured and supplied by Tata BlueScope Steel, is the most preferred material for making metal silos. With more than five decades of global presence, ZINCALUME® steel made of 55% Aluminium, 43.4% zinc and 1.6% silicon, is a tried and tested formulae for long lasting performance.

Some of its highlights are:

✓ Offers excellent corrosion resistance. Remarkable Cut Edge Protection

✓ Looks newer for longer due to reduced oxidation, up to 4 times longer life than conventional steel material

✓ Light weight, Conventional GI sections of higher thicknesses can be replaced with lesser sections of ZINCALUME® steel resulting in less bulky structures

✓ Easy formability, ZINCALUME® steel has specific steel grades suitable for most forming operations, without sacrificing coating adhesion.

✓ Improved thermal efficiency and temperature control for storage

✓ Sustained durability with low maintenance in the long term

✓ Suitable for all weatherability and climatic conditions

✓ Made from sustainable material

ZINCALUME® silos are best suitable for grains. Due to high solar heat absorption of Galvanised Steel silos, the grains in contact with heated Galvanised Sheets tend to become brittle. ZINCALUME® steel on the other hand ensures lesser heat absorption thus avoiding loss in quality of grains stored.

Apart from silos, ZINCALUME® steel, a versatile material is aptly suitable for other formidable structures for human interactions. Be it LGF, pipe cladding, doors and window frames, drywall partition or solar mounting structures; you can rest be assured of the quality and performance of ZINCALUME® steel as an alternate application.

Do get in touch with us for more information by writing to us on or visit our website

Grain silos made from ZINCALUME® steel

Zincalume® steel or galvanized steel. Which is the preferred choice for steel construction?

Roof is the most essential part of your structure. Done professionally, it seals your building, protects it from water leaks and increases your property value. Most importantly, your roof brings your entire structure to life for many years to come! The metal roofing or wall cladding is one of the principles building components that act like protective envelope.

But have you ever wondered what kind of material goes into making a steel roof?

Selection of the right material would increase building life, incur low maintenance, enable thermal comfort in hot or cold seasons, provide design flexibility and improve overall aesthetics that last longer.

While there are many roofing materials available, ZINCALUME® steel and Galvanized steel may find themselves at loggerheads during a purchase decision.

Let us see what the differences are between the two:
Fact file: When the steel surface is coated with an additional layer of organic or metallic material to protect from rusting, is called coated steel. Usually, a coating layer is added to flat steel when they are in a coil form.

What is Galvanized steel and ZINCALUME® steel?
Galvanized steel is coated with almost 100% zinc while ZINCALUME® steel is coated with an alloy of approximately 55% Aluminium, 43.5% zinc and 1.5% silicon.

If you’re new to the world of steel, you may have heard the word galvanize thrown around a few times. But what does galvanize mean? Galvanizing is the process of applying a protective coating to steel or iron. The coating is made from zinc and is used to halt the formation of rust. Galvanization is important because it provides protection for steel and iron products.

Developed by technology inventors, ZINCALUME® steel on the other hand is world’s leading Al-Zn alloy coated steel product. It is an outcome of extensive research and continues to set standards for corrosion resistance and long life. It is designed to withstand the rigors of nature and the product’s performance is well-established across a wide range of climatic conditions and geographies using exposure test sites and infield inspections.

The rate of corrosion of ZINCALUME® steel is initially very similar to that of galvanized steel. However, the longer life of ZINCALUME® steel is attributed to the rapid slowing down of this corrosion rate shortly after the initial exposure to the environment. This is due to the formation of Aluminium-containing corrosion products that consequently add to the barrier protection of the coating. All the while, the zinc present in the ZINCALUME® steel coating is available to sacrificially protect the steel at cut edges.

Application areas & Advantages of ZINCALUME® steel over Galvanized steel
Galvanized steel finds its presence in Automobile, telecom & electricity towers to name few. Even in construction industry, GI sheets are practically used for carrying heavy loads. Generally, steel decking, mezzanine or primary structures like beams, columns are common applications in steel building. 1.5mm to 3.00mm are common thicknesses used for these applications. Historically, Galvanized roof panels are also being used for residential & commercial segments. Generally, Z120, Z180 & Z275 are common coating thicknesses used for construction application

With increased awareness for selecting the right material, today Architects & Developers choose ZINCALUME® steel; which has grown as a widely accepted building material over Galvanized steel especially for projects segment. Scope of ZINCALUME® steel can also be extended to LGFS, Solar mounting structures, Silos etc. where high strength & light weight along with durability is of utmost importance.

With technological development in building materials, ZINCALUME® steel is an advanced Al-Zn formulation over standalone Zn coated Galvanized steel as it offers extended corrosion protection & superior aesthetics. Having High strength to weight ratio, ZINCALUME® steel requires lesser tonnage over galvanized steel without compromising on other design aspects, resulting in reduced capital investment. For ZINCALUME® steel, AZ150 & AZ200 are most prominent coating thicknesses used for projects ie non-residential segment applications like Metro stations, Airport, Industries & warehouse as cladding material

Technical benefits of ZINCALUME® steel
Tests have demonstrated that corrosion protection of ZINCLAUME® steel can last up to four times longer than corrosion protection provided by traditional Zinc coated steel with similar coating thickness in roofing and wall cladding applications under similar environmental conditions.

Special Resin & Passivation Coating:
Specially developed Resin & Passivation, double layer protection is key differentiator for ZINCALUME® steel when compared with other coated steel peers. It adds anti darkening property by which your roof and wall cladding looks newer for a longer period. It gives excellent adhesion to substrate, very good impact resistance & forming flexibility

Self-healing properties:
ZINCALUME® steel inherently offers self-healing characteristics for cut edges. The problem with galvanized metal, painted or not, is that once it starts to red rust, it doesn’t eventually stop as it does in case of ZINCALUME® steel. The rust on galvanized surface will just continue to spread and get worse because it doesn’t have the self-healing property.

Technical support:
Tata BlueScope Steel receives extended R&D Support from BlueScope Australia and Tata Steel for special developments as per application. Full technical assistance provided by Tata BlueScope to architects, consultant, owners, Govt./Pvt organizations on recommendation of product suitability in various environments and process assistance to end users.

Since your roof is a long-term investment, it’s important to choose the best option. With decades of experience in manufacturing best-in-class steel products and solutions; we at Tata BlueScope Steel exactly know how important it is to choose the right product for your steel building. Our expert team from Tata BlueScope Steel can guide you for making the right decision, well-suited for your desired application.

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Pre-painted Steel: superior cladding solution for industrial, commercial & infrastructure applications

‘First impression is indeed the last impression’ is an old cliché that even today stands true, especially when it is our own factory, warehouse or a commercial structure. Selection of the right cladding material sets a perfect tone for the rest of the structure followed by its interiors. External material and colour choice is much more ‘permanent’ decision and any compromise in that can affect both aesthetics and performance. An impactful ingredient that contributes immensely towards the overall life of the cladding material thereby the longevity of the steel structure, is its colour coating. Colour coatings are used to give painted steel long-term protection under corrosive conditions, maintaining its strength and integrity.

Painted steel sheets are generally referred to as colour coated sheets. The sheets used particularly for roofing and walling in the construction industry are mostly pre-painted. These pre-painted steel sheets usually have metallic coating beneath the paint. The substrate i.e. metallic coated steel coil is processed on a continuous paint line to get the pre-painted steel coil. A typical paint line involves activities like uncoiling, cleaning, pre-treatment, primer application, painting (top and backer coat), baking and recoiling (Refer Fig. 1).

Pre-painted Steel – A System

The pre-painted steel has substrate, conversion coating, primer and paint coats on both the surfaces. For best performance, there needs to be synergy and compatibility among different components of the paint system and the substrate. Normally, the paint coats for the two surfaces of a coil are different because of the difference in performance required. The surface to be exposed to weathering is referred to as top coat and other side as backer coat. However, the paint coats for both surfaces could be same. Such pre-painted steel is called double sided. Structural stability is function of base metal thickness & steel grade, whereas corrosion resistance is contributed by type of metallic coating & paint system


Various Paint systems in Pre-painted steel

It provides aesthetics, protection of substrate and thermal efficiency to structure. Paint shade determines Solar reflectance Index (SRI), hence crucial parameter while building material selection. There are various paint systems available in pre-painted systems

  • Regular Modified Polyester (RMP)
  • Silicon Modified Polyester (SMP)
  • Super Durable Polyester (SDP)
  • Polyvinylidene fluoride (PVDF)

Thickness of base substrate known as Base metal Thickness (BMT),while the thickness of metallic coated substrate is termed as TCT, i.e. total coated thickness (Base steel + metallic coating), the thickness of painted steel is called TPT, i.e. total painted thickness (steel + metallic coating + paint film).

Tata BlueScope steel expert team can guide you for right material selection that suits your building environment


COLORBOND steel edge

COLORBOND® steel is one of the world’s most advanced pre-painted steel products for the building and construction industry. COLORBOND® steel has been designed to provide an excellent strength of the steel base, the corrosion resistance of 55% Al-Zn Alloy coated ZINCALUME® steel and the superior aesthetics of an advanced top & backer paint system. COLORBOND® steel coils are typically supplied in various colours in grade G300 and G550 with base metal thickness ranging between 0.30 mm to 1.30 mm and widths of 900 mm to 1250 mm.

Depending upon aesthetics & environment conditional requirement, Tata BlueScope steel offers COLORBOND® steel with multiple variants as

  • COLORBOND® Spectrum Series
  • COLORBOND® Ultra
  • COLORBOND® Metallic

Successfully tested for over five decades, COLORBOND® steel has withstood challenging weather conditions; ranging from extreme cold, dust, cyclonic, saline coastal environments to heat zones exceeding 50 deg C. Best in class paint system helps to resist chipping, peeling and cracking, ensuring COLORBOND® steel delivers a long lasting performance for generation to come. Widely accepted by most progressive sectors like manufacturing, warehouse, infrastructure etc., COLORBOND® steel is most preferred choice of Architects to transform landscape around us

Thermatech® solar reflectance technology from COLORBOND® steel, solution to counter modern environment challenges

Intensity of Urban heat island (UHI) effect

Around half of the world’s human population lives in urban areas. In the near future it is expected that the global rate of urbanization will increase by 70% of the present world urban population by 2030, as urban agglomerations emerge and population migration from rural to urban/suburban areas continues. Thereby, it is not surprising that the negative impacts related to urbanization is an increasing concern capturing the attention of people worldwide.

An urban heat island (abbreviated as UHI) is where the temperature in a densely populated city is as much as 2 degrees higher than suburban or rural areas. Why? This happens because of the materials used for pavements, roads and roofs, such as concrete, asphalt (tar) and bricks, which are opaque, do not transmit light, but have higher heat capacity and thermal conductivity. UHI is also decrease air quality in the cities, due to pollution generated by industrial and automobile exhaust, higher extent of particulate matter and greater amounts of dust. Extensive research activities being conducted to mitigate risks related to UHI

What is Solar reflective index (SRI)?

The Solar Reflectance Index (SRI) is a measure of the solar reflectance and emissivity of materials that can be used as an indicator of how hot they are likely to become when solar radiation is incident on their surface. The lower the SRI, the hotter a material is likely to become in the sunshine.

SRI is a scale from 0 to 100. Materials that absorb and retain solar radiation (and so become hotter in sunshine) have a lower number, whilst highly reflective materials (which remain cooler in sunshine) have a higher number.

COLORBOND® steel with Thermatech® solar reflectance technology

For more than 40 years, COLORBOND® steel has revolutionised building design, transforming our workspaces along the way. COLORBOND® steel with Thermatech® solar reflectance technology sets new benchmarks, providing architects, builders and developers better choices to meet the challenges of a changing world. With the Indian summer soaring above 50 degree Celsius; roof is your structure’s first line of defence. And the climatic impacts within the building could be controlled with a thermally efficient roofing system.

Thermal reflective roofing materials with suitable SRI values in its paint system, have been a big focus in recent times and is one of the many vital components considered while planning a structure. Addressing the changing requirements of a roofing system that demands greater climatic considerations. Tata BlueScope Steel, leading coated steel manufacturer offers an innovative energy efficient solution; THERMATECH™ Solar Reflectance Technology that is incorporated in COLORBOND® steel. This High strength light weight colour coated steel provides thermal protection, by optimising solar reflectance properties, which is inbuilt in its material due to the paint system

Saves Energy

Thermatech® technology helps your roof and your building stay cooler by reflecting more of the sun’s heat. When heat is reflected away from your building, air-conditioning has an easier job keeping your building cool. Using less energy to cool your building can help occupants save money on energy costs as well as potentially reduce emissions from electricity generation. In moderate to hot climates COLORBOND® steel with THERMATECH® Technology can reduce annual energy consumption by up to 20%, compared to ordinary Pre-painted steel (ordinary PPGL) roofing materials of similar colour but with a lower solar reflectance.

Help Structures Lasts Longer

COLORBOND® steel with Thermatech® technology absorbs less heat from the sun, protecting your roof and its supporting structure from extremes in heat. As a result, the stresses placed on your roof and its materials are reduced and your roof lasts longer.

Even Darker Colours Reflect More Heat

It’s widely known that lighter colours are better at reflecting heat. Now with Thermatech® technology, even the darker colours in the COLORBOND® steel range perform better without changing their appearance. So you can choose from a wider range of colours and still enjoy a thermally efficient roof.

Minimising Environmental Impact

With Thermatech® solar reflectance technology, we help in creating a future that is comfortable not just for people, but for the environment too. THERMATECH® Technology is an effective way to reduce the energy load of your building. COLORBOND® steel is a GreenPro certified product by IGBC (Indian Green Building Council). This certification requires the product to undergo a rigorous sustainability assessment. Tata BlueScope Steel is committed to design and manufacture sustainable products and solutions, that are lighter, last longer and use fewer natural resources to produce them.

Watch this video to understand more about Thermatech® solar reflectance technology from COLORBOND steel

Design Flexibility in steel building construction, made possible with COLORBOND® steel

In this blog, we explore the realms of creativity that are possible using steel for roofing and wall cladding applications. Not only does metal coated and pre-painted steel offer creative options for shape and design, there are several other benefits which award ‘flexibility’ to designers and builders. Structures made from steel can offer looks ranging from the classic to the contemporary. Metal coated and pre-painted steel can also be used to add accents and flavour to otherwise utilitarian industrial or commercial constructions.
Discover Design Flexibility in steel buildings, and remember you are only limited by your imagination!

While we consider design flexibility with steel cladding material, the following considerations become pertinent:

  • Can this material be used for industrial /commercial purposes?
  • Is this material suitable for long spans & complex shapes, sizes?
  • How easy is it to use? Can local unskilled labour be used?
  • Can you make unique, artistic designs with it?
  • How does it compare on project costs?
  • Are there time constraints to build a structure with such material?
  • Can one use space more effectively by using this material?

A decade ago, construction was limited to modular designs available only in regular dimensions. The “boxy, industrial look” of buildings is now a thing of the past. Due to the unique properties of steel, the client is no longer forced to fit his needs around predefined modules. Building designers today have at their disposal, a growing number of techniques and products that help them essential function of a building, while aesthetics of building to be ensured

Roofing material

Metal roofs have been a preferred options covering for commercial, institutional and industrial buildings for years because of their ability to protect against the elements, to allow water to drain away from the roof surface, and to keep building contents and occupants dry and comfortable. Coated steel also provides the designer with several options to create unique and aesthetic. Following aspects are essential considerations

  1. Roof fixing

    The two possible varieties of roofing are standing roof or seam with fasteners. The advantage of standing seam roofs has given designers flexibility for innovation with building structures and styles while ensuring a leak proof roof.


  2. Designs with curved roof

    Designing with coated steel allows for both traditional straight roof sheeting as well as innovative curved roofing designs. The strength of coated steel provides virtually limitless design possibilities. The curved roof helps create additional indoor space while still meeting strict building height guidelines. Due to its flexibility, coated steel is capable of accommodating the double radius of the curved roof, with great accuracy of the curves. From flowing curves to precision flatness, metal is easy and economical to install. This freedom of design provides the architect and owner the opportunity to build within a wide range of styles and create an image that will endure.


  3. Designs with sloped roofs

    Recently, building owners and architects have come to recognise and appreciate the attributes of “low slope” metal roofs such as their long service life, low life cycle cost, sustainability, low maintenance requirements etc. Unlike non-metal systems which require an underlying substrate or deck, “low slope”metal roofs can be applied directly over bar joists or purlins. Due to their interlocking or active fastening systems, metal roof panels are designed to meet the requirements of severe wind and uplift tests. To ensure longer life, majority of low slope roof materials are protected from the elements due to the highly durable metal coatings & Pre-painted steel
    When building owners and architects require an attractive and affordable “steep slope” roof covering for a commercial project, chances are that more and more of them will choose a metal roof. Steep slope metal roofs, for example, can enhance the appearance of virtually any building due to their receptivity to various coatings and their ability to be formed into a wide variety of shapes. Because steep slope metal roofs accelerate the rate of water run-off, they also reduce the likelihood of a build-up of debris, mold and mildew. At the same time, they are less likely to experience staining from acid rain or UV degradation than non-metal steep slope systems. The durability and reliability of steep slope systems is high. No other product has done more to change the profile of architecture than steep slope metal roofing. Metal roofs have now added a new design element to a building that separates them from the less attractive flat roofs.


  4. Optimum Space Utilisation

    Larger interior spaces, high clearances and spans without interior columns add flexibility of design & utility to steel buildings. The high tensile strength of steel enables excellent spanning capabilities for framing and roofing providing more flexibility in designing internal spaces that maximise opportunities for cross ventilation, helping to meet energy efficiency requirements. To obtain a desired design you can reduce the width of the joist and compensate it with heavier gauge steel without changing the spacing of members.
    At times this large span is a must requirement e.g. aircraft hangar. However, it could only be achieved with self-supporting steel framing system with no need for interior walls to help bear the weight of the building. With this self-supporting steel frame interior walls can easily be eliminated, altered or relocated and large open floor plan created including raised ceilings. This excellent spanning capabilities offered by steel framing provides more flexibility in designing internal spaces that maximise opportunities for cross ventilation, helping to meet energy efficiency requirements.


  5. Ease of Construction

    On-site construction of steel building is easy, highly efficient and safe, which less skilled labour can quickly learn. There is not much measuring, cutting or wet processes and the pre-manufactured fit-out can be integrated with interior and exterior fittings using local labour. Workers can be easily trained to use steel building systems in combination with other materials as well


  6. Cost Advantage

    Studies from across the world suggest that pre-engineered building solutions costs less than other construction methods. The variety in steel gives options at different price points without
    Compromising on the design. Steel construction offers the potential to build substantially more covered space with the same cash flow. Steel buildings can be built in much less time without increasing site resources, thus freeing capital and finite resources for other projects – “The efficiency of use of working capital”. Offsite prefabrication increases the speed, efficiency, quality and safety of construction. It is also less expensive to integrate into existing structural systems. The predictability of cost and program also improves


Design friendly attributes by COLORBOND® steel

COLORBOND® steel is one of the world’s most advanced pre-painted steel products for the building and construction industry. COLORBOND® steel has been designed to provide an excellent strength of the steel base, the corrosion resistance of 55% Al-Zn Alloy coated ZINCALUME® steel and the superior aesthetics of an advanced paint system. COLORBOND® steel supplied in various colours in grade G300 and G550 (yield strength of minimum 300 MPa and minimum 550 MPa) with base metal thickness ranging between 0.30 mm to 1.30 mm and widths of 900 mm to 1250 mm. COLORBOND® steel integrates high strength with ease to formability, slitting, shearing & spanning to adopt required shape & size.

COLORBOND® steel is not just painted, but has a paint system that delivers longer life and superior aesthetics. The unique composition of the paint system consists of stable resins and inorganic pigments that do not break down easily even under severe UV radiation, thus preventing fading and chalking for longer

Designed specifically for steel construction industry, cladding material that can be twisted, tapered, sliced and angled; COLORBOND® steel is indeed a designer’s delight, seeking pure customization and liberating your freedom of thought. It accentuates signature styed architectural creations with a modern-day streak. Leaving your mark for generations to come.

Roofing for Coastal Areas – Choosing the best roofing material for your projects in saline environments

Metal roofs are ideal when it comes to industrial roofing, due to many virtues it carries. They are tough enough to survive more with minimum maintenance. They are good reflectors of heat and protect from extremities of weather. Especially with colour coated roofing sheets, there are plenty of aesthetically pleasing options available.

While metal roofs will do exceptionally well in hot & wet areas, coastal regions pose a different challenge altogether. Several tests and years of experience have demonstrated the ill effects – such as corrosion – of exposing metal roofs to the salinity found in the air in coastal areas. While it is true that all metal roofs do not corrode at the same rate, the salty air and humidity react with the metal roof and eventually cause damage.

Roofing options for coastal regions;

Metal roofing sheets have evolved in the past few decades. Especially with the different types of coatings that prevent them from getting affected as compared to non-coated metal.

Today there are few options in metal roofing that are drafted for extreme saline or coastal topographies.

  1. Galvanised Roofing

    Galvanized steel is relatively inexpensive and can provide considerable corrosion resistance if installed properly. This roofing material is made of alloyed steel with a zinc coating, which will protect your roof from rust, strong winds, and rain. But the lifespan of galvanised roofs largely depends on the thickness of galvanisation. Higher the galvanisation thickness, greater is the lifespan but this also increases the cost of the roof.


  2. Aluminium Roofing

    Aluminium roofs have grown in popularity recently, due to their resistance to corrosion and their energy efficiency. Aluminium reflects light, emits heat, and can save you some money on heating and cooling costs for your building. While aluminium has greater corrosion resistance, it lacks the strength of steel and is very expensive as compared to other roofing options


  3. Zinc-Aluminium alloy coated steel Roofing

    Zinc-Aluminium alloy coated steel roofing combines the advantages of both galvanised roofing and aluminium roofing and provides optimum performance at lower costs.

    Zinc-Aluminium alloy coated steel is easily available and is widely used all over the world for residential, commercial, industrial and infrastructural applications.

    An advantage that Zinc-Aluminium alloy coated steel has over normal galvanized material is that it has enhanced protection abilities. Over time, Zinc-Aluminium alloy coated steel tends to perform better than galvanized steel, especially when exposed to water or other liquids that can speed up the oxidation process. Even after a few decades, Zinc-Aluminium alloy coated steel will be less likely to rust than normal galvanized steel.


Tata BlueScope Steel manufactures and supplies variant of Zinc-Aluminium alloy coated steel, specifically designed and tested for severe marine climates; COLORBOND® Ultra steel . This products from Tata BlueScope Steel offers you aesthetics and long-lasting performance; with excellent protection from erratic weather conditions.

What is so different in COLORBOND® Ultra steel ?

COLORBOND® Ultra steel roofing sheets offer an attractive, long-lasting cladding material with excellent protection against the effects of severe industrial environments such as heavy dust, emissions, contact with heat, moisture, corrosive chemicals or acids.

The factors that make COLORBOND® Ultra steel the best choice for coastal regions are;

  1. Thicker 55% Al-Zn alloy coating:

    COLORBOND® Ultra steel with ZINCALUME® steel base, give total peace of mind due to its thicker metallic coating, with a minimum of 200 g/m 2 of the 55% Al-Zn alloy coating for even greater corrosion resistance.

  2. Specially formulated corrosion-resistant primer and paint system

    COLORBOND® Ultra steel comes with specially formulated corrosion resistance primer and super durable polyester paint system that provides superior corrosion resistance & colour performance

    Corrosion-resistant proprietary conversion coating

    Primer Coat
    Universal corrosion inhibitive primer.
    Nominal dry film thickness 5µm each side

    Finish Coat
    Custom formulated Super Durable Polyester paint system with high-performance inorganic pigments, nominal dry film thickness 20µm on the top or weather side.

    Backing Coat
    Custom formulated Bass Grey. Nominal dry film thickness 10µm.

  3. Decades of Proven performance

    The performance of COLORBOND® steel has been rigorously tested under various climatic conditions. For over three decades BlueScope steel (JV partner) company has monitored the product’s performance across a wide range of climatic conditions using exposure test sites and infield inspections. There are thousands of test samples undergoing outdoor exposure tests at many sites in Australia, New Zealand, Asia and now in India (already more than 5-year old test sites).

    Your answer to the best roofing material for a structure close to the sea is here. Make a great choice with Tata BlueScope Steel’s Colorbond Ultra Steel!!

What makes COLORBOND® Steel a green building product?

Building a structure has many direct and indirect ramifications on nature. Right from manufacturing of its raw material, getting it to the site, while constructing or repurposing the same; buildings consume energy, water, generate waste, and at times also emit hazardous emissions. Such adverse effects on people and environment; has prompted the world to craft an effective policy in form of green building certification and usage of sustainable commercial buildings material to mitigate serious impacts on our lives and ecosystem.

Environmental considerations are becoming increasingly important in the construction of new green buildings. The green concepts and techniques in building sector can help address national issues like water efficiency, energy efficiency, and reduction in fossil fuel use in commuting, handling of consumer waste and conserving natural resources. Most importantly, these concepts can enhance occupant health, happiness and well-being.

In view of this, the Indian Green Building Council (IGBC) has launched IGBC Green New Buildings rating system to address our nation’s priorities. This rating programme is a tool which enables the designer or an architect to apply green concepts and reduce environmental impacts.

COLORBOND® steel and ZINCALUME® steel manufactured and marketed by Tata BlueScope Steel are ‘GreenPro’ certified and are ideal for creating buildings that satisfy environmental rating tool requirements such as the Indian Green Building Council (IGBC), on their sustainability assessment. These are the new age eco-friendly construction solutions for propagating the green building movement.

Green building rating brings together best sustainable practices and solutions to reduce environmental impacts and provides an integrated approach considering life cycle impacts of the resources used.

Let us see how COLORBOND® steel and ZINCALUME® steel conform to the sustainability quotient stipulated by GreenPro certification:

Manufacturing Process

During manufacturing process there has been special care taken for minimum water consumption, energy utilisation and hazardous and non-hazardous waste management system. Obtaining 90% of its raw material (by weight) from regional sources has further added to its green credentials. With adequate quality management system the plant has been effective in reducing rejection rates after sales. In addition to that an efficient manufacturing process, usage of energy sensitive machinery, solar energy, recycling and disposal management system further contributes to qualifying to a green manufacturing process.

100% Recyclable and Reusable

Recyclability refers to how effectively and efficiently a product or material can be recycled into a new product. Recycling prevents the waste of potentially useful materials; reduces consumption of raw materials and energy; and reduces overall pollution. COLORBOND® steel and ZINCALUME steel are water harvestable materials with RoHS compliance. Being lead free it has acceptable levels of volatile organic compounds.

Thermally Efficient

Roofs made from COLORBOND steel have high solar reflectivity reducing solar radiation and heat absorbed into the buildings. The paint technology known as THERMATECH technology, consists of high solar reflectance index that contributes to energy performance improvement in the built environment. An effective way to reduce a building’s energy load through less reliance on air-conditioning to maintain a comfortable internal temperature, Thermatech technology potentially saves occupants money on energy as well as reduces emissions from electricity generation.

Increased Lifespan

COLORBOND® steel with its advanced paint technology uses fewer metal resources and offers excellent corrosion resistance with an increased lifespan resulting in a smaller environmental footprints.


IGBC’s accreditation for COLORBOND® and ZINCALUME® steel as green products, further increases the green rating points of the overall project; thus granting of government incentives. Both COLORBOND steel and ZINCALUME steel are sustainable products manufactured by a responsible establishment. Being durable and resilient to India’s harsh climatic conditions and coastal environments with its long life helps conserve resources and energy that may otherwise be invested in products with a shorter life span. It is a lightweight material which can mean a lower cost to transport to site and enables a lighter roof structure. It is a perfect combination of beauty, strength and environmental performance that makes it a responsible choice for a greener and a sustainable future.

Internationally, the Melbourne Convention and Exhibition Centre (MCEC) was the first convention centre in the world to have achieved a 6 Green Star rating back in 2008. This recognition was accredited by the Green Building Council of Australia (GBCA) with an objective to develop a sustainable property industry in Australia and drive the adoption of green building practices through market-based solutions. The entire roofing solution at the Melbourne Convention and Exhibition Centre; was made of COLORBOND® Steel (with THERMATECH™ technology).

To know more about COLORBOND® steel, click here

Make a right choice for your Industrial roofing needs with Colorbond® steel!

There are several reason where you believe, COLORBOND® steel is most right choice for Industrial roofing requirements. Following are key factors makes COLORBOND® steel different from others,

Make your creation Look Newer for Longer

COLORBOND® steel is one of the world’s most advanced pre-painted steel products for the building and construction industry. COLORBOND® steel has been designed to provide an excellent strength of the steel base, the corrosion resistance of 55% Al-Zn Alloy coated ZINCALUME® steel and advanced paint technology that provides an excellent durability with resistance to peeling, chipping and cracking, COLORBOND® steel will ensure your roof or wall looks newer for longer

Stay ahead of the curve with Innovative solutions

For many decades, COLORBOND® steel has been a popular choice for several projects across segments like Industrial, Warehouse, Infrastructure etc . As a commitment for being at the forefront of emerging building design trends, COLORBOND® steel offers Thermatech, a solar reflectance technology. This industry leading technology, making it thermally efficient roofing for building. Thermatech® Technology can be an effective way to reduce the energy load of building through less reliance of air-conditioning, enabling cooler interiors.

Bring home the Quality that guarantees performance

The legendary lifespan of COLORBOND® steel is a result of decades of performance-monitored tests under actual conditions. This happens at exposure sites across India, Australia & around world. The technical excellence through R&D efforts is contributed by BlueScope Steel’s NATA registered laboratories. So for metal roofing you can be sure, COLORBOND® steel is made for durability under real life conditions.

Excellent design Flexibility

COLORBOND® steel offers architects, designers, builders and owners a versatile, lightweight, strong and aesthetically pleasing solution for almost any type of building and environment. COLORBOND® steel stands apart as compared to its ordinary roofing sheet manufacturer. It helps to bring imagination to reality. However complex is your design need, COLORBOND® steel is the ultimate roofing solution

Less Environmental Footprint

COLORBOND® Steel is also important for those choosing materials with sustainability in mind. COLORBOND® steel uses fewer resources through its life cycle and has an increased lifespan, compared to ordinary colour coated roof material. It is also 100% lead free and rain water harvestable. The result is a less environmental footprint. COLORBOND® steel also a Green pro certified product by Indian Green Building council (IGBC)

A Promise Made is a Promise Kept

COLORBOND® steel is backed by a Tata BlueScope Steel Warranty*. With up to four times the lifespan of conventional pre-painted galvanised steel, you can be confident that COLORBOND® steel will keep your structure aesthetically superior for years to come.

Vibrant colour palette to choose from

Available in a wide range of vibrant colours, COLORBOND® steel is an architect’s delight setting new standards with its contemporary finish.

Light Gauge Framing System (LGFS): A Smart and sustainable Steel building technology

Light Gauge Framing System (LGFS) or Light gauge Steel framing (LGSF) is a construction technology using cold-formed steel as the construction material. It can be used for roof systems, floor systems, wall systems, roof panels, decks, or the entire buildings. They can also be used as individual framing members such as studs, joists, headers, and truss members.

Light Steel Frame members can also serve as both primary structures and secondary structures. An example of the Light Steel Framing used as primary structures is the webbed steel trusses. Steel studs act as secondary structures by providing lateral support to exterior wall finish since they rely on the primary structure for support.

Light Gauge Framing System (LGFS)

Light Gauge Framing System (LGFS) buildings can be used as substitute of RCC/traditional buildings. It is used to create frames for external walls, floor, internal walls etc. These are used as the base on which suitable boards and materials are used to cover the framing. LGSF buildings look similar to traditional RCC buildings after completion

A Smart and sustainable Steel building technology
Light Gauge Framing System Sustainable Steel building technology
Light Gauge Steel Framing System (LGFS) made from High Strength ZINCALUME® steel Tata BlueScope Steel offers Light Gauge Steel Framing Systems made from 55% Al-Zn Alloy coated ZINCALUME® steel AZ150 G550 (550 MPa minimum yield strength), complying with AS 1397 and IS 15961.
Advantages Light Gauge Steel Framing system
  1. Strength & Durability: High strength results in safer structures, less maintenance. Steel structures made from High strength ZINCALUME® Steel offer greater durability, exceptional corrosion resistance and results in safer structures with less maintenance
  2. Light Weight: These sections are made from light weight and high strength 550 MPa steel, and hence results in lighter foundations and buildings that have less probability of damages in an earthquake.
  3. Quality: Steel frames have consistent straightness and hence simplifies structural alignment. These structures are uniform in quality an thus do not warp or split
  4. Recyclable: LGFS material is 100 % recyclable and hence environment friendly.
  5. Expansion & relocation: Ideal for expansion of existing structures, additional floors, etc. Flexibility for future expansion and relocation.
  6. Unequalled design flexibility: Compared to conventional framing, steel framing can span greater distances, allowing greater design flexibility. Interior walls can be placed without load-bearing considerations. Steel frames are Compatible with a wide range of cladding, roofing and glazing options.
  7. Lower construction costs: Light steel frames are very strong and lightweight, so building frames require less material (compared to timber or concrete). Hence results in lesser construction costs
  8. Easy transportation & handling: Steel frame components are light & designed for easy to transportation and handling
  9. Quick & easy construction: As all the intelligence is built into the modelling and fabrication phase of the steel frame manufacturing process, unskilled or semi-skilled labour can do the assembly and construction easily. Steel framing is supplied with electrical and service holes pre-punched, meaning reduced time on site for plumbers and electricians

Tata BlueScope Steel offers Light Gauge Steel Framing Systems and solutions under its EZYBUILD® solutions brand

EZYBUILD® Solutions are a set of light-gauge structural buildings for industrial, commercial, residential and institutional applications. These ready to install solutions are quick alternatives to conventional buildings and are offered through a dedicated network of authorised EZYBUILD® solutions providers.

The products and solutions offered by EZYBUILD® include: PEBLite: A unique light-gauge and strong pre-engineered building solution SMARTBUILD® System: Steel Framing System with Strength and Durability SMARTRUSS® System: Advanced, lightweight framing technology for all your roof support solutions

Light gauges steel framing system has advantages like adaptability, off-site manufacturing, reusability, recyclability, cost efficiency and resource efficiency making it one of the most sustainable building methods available today. Light gauge framing systems can fulfil the requirements of small building with cost effectiveness and environment friendliness that makes light-gauge steel construction, a technology with huge growth potential and applicability