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

What are the different type of Steel roofing sheets available in India

A roof to a home is one of the most important aspects. Since the designing of a house has been ever evolving over the years, the roof has evolved as well. The roofing material that originally started by being made using clay later evolved to shingles, which has been a widely popular roofing material in India and over the world. Due to the limitations of roofing shingles, people started looking for an alternative roofing solution to add a protective covering with better aesthetics and durability to their homes which resulted in steel roofing sheets coming into the picture.

Steel roofing sheets are a strong solution to all the roofing problems you face when designing a home or commercial space for yourself. Steel roofs are liked due to the various advantages that are attached to them. Steel roofing sheets are favored for their fire and water-resistant qualities, luster, longevity and durability and they are quick to install when done by a professional. This roofing solution is lightweight and reflects the sun, which helps reduce the room temperature and helps the homeowner save on electricity bills too!

While deciding on steel roofing sheets for your home, you should be aware of the different types of steel roofing sheets available in the market. The properties attached to these different sheets and what is best for you as per your requirements. Below is a list of different types of roofing sheets available, their basic characteristics, materials used and their making process for you to understand and choose the most ideal roofing solution for your home.

Types of steel Roofing roofing sheets:

  1. Galvanized corrugated sheets (GC sheets) : The most basic of the steel roofing sheets is the galvanized corrugated sheets. These sheets are created using steel as the base and a layer of Zinc is created above the inner steel layer which gives an added protection to the steel. Zinc helps slow down the corrosion process of the sheet and helps extend the life of sheets. One of the most common forms of steel roofing solutions, Galvanized corrugated sheets or GC sheets are a quick and economical roofing solution for any establishment. The corrugated pattern on the sheets helps in quick and easy installation of the sheets and also helps avoid leakage. When on a budget, GC sheets are the most ideal steel roofing solution for you.

  2. Galvalume or Zinc-aluminum coated steel sheets: The Galvalume steel sheets or Zinc-aluminum coated steel sheets are an advanced steel roofing solution to the GC sheets. Unlike the GC sheets, the GL sheets have a layer of Aluminium and Zinc on top of the base steel roof. It has an alloy coating of 43.5 % Zinc (Zn), 55% Aluminium (Al) and 1.5 % Silicon.

    Zinc coating protects steel by way of sacrificial protection. Aluminium protects steel by way of barrier protection and since Zn-Al coating contains both Zinc and Aluminium, it provide both sacrificial & barrier protection to steel. Zn-Al coating contains also provides improved performance against chipping and other external damages

    Aluminium as a metal has properties that provide better corrosion resistance as compared to other metals. Its also helps give the steel roofing sheet a cleaner and more uniformed appearance.

    For same thickness of coating, Zinc-Aluminium alloy coating imparts corrosion resistance of up to four times the life of Galvanized steel.

  3. Pre-painted galvanized iron (PPGI) sheets: Pre-painted steel sheets have a metallic coating and a paint coating over the base metal. The PPGI sheets have a Zinc coated or galvanized substrate, conversion coating, and suitable combinations of primer & paint coats on both the surfaces. PPGI refers to factory pre-painted steel roofing sheets, where the steel is painted before forming, as opposed to post painting which occurs after forming. Pre-painted steel sheets are generally referred to as colour coated steel sheets.

  4. Pre-painted galvalume or Zinc Aluminum Sheets (PPGL) : Pre-painted galvalume sheets or Zinc Aluminum coated Sheets, is the painted version of Galvalume steel sheets.

    The PPGL sheets have a Zinc- aluminum alloy substrate, conversion coating, and suitable combinations of primer & paint coats on both the surfaces.

    The paint layer over the metallic coating provides an additional layer of protection and adds to the aesthetics of the steel roofing sheets. The paint coating also improves the thermal efficiency of these steel sheets

    These steel sheets exhibit better solar reflectivity and hence helps to maintain the internal temperature of the buildings in which it is used.

When deciding on steel roofs for you home, you can choose from a variety of patterns such as steel sheets, steel liners, steel tiles or even wall cladding solution which can be installed in various sized establishments. A steel roof has various advantages attached to it can be a very long-lasting and beautiful solution for your home.

DURASHINE® is the flagship retail brand of Tata BlueScope Steel, which offers colour coated profile sheets in form of roof and wall solutions. These steel roofing sheets are manufactured from high strength pre-painted and Zinc –aluminum alloy coated steel exhibiting greater corrosion resistance, wider spanning capabilities with better uplift performance. DURASHINE® offers aesthetically superior and durable roofing solutions for residential, commercial and industrial applications.

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

Why are steel roofing sheets better than conventional roofing

The market of roofing sheets in India has been ever evolving. In the recent decades the roofing industry in the country has seen a paradigm shift with increase in customer engagement in selection of roofing solutions and increased customer demand in terms of value for money and aesthetics.

This has resulted into increased demand of roofing sheets in Domestic, industrial and commercial sectors.

There are various types of roofing sheets available in the market like –

Steel roofing solution has in recent times evolved as winner in roofing sheets market due to various factors ranging from Aesthetics, cost effectiveness, recyclability, low maintenance, durability and energy efficiency. Whether you are buying a home or planning of installation, here are some of the few reasons why steel is better than conventional roofing.

  • Light Weight and high strength – As compared to weight of other roofings like cement tiles, the metal roofing sheets are very light weight thus saving on the additional cost of engineering and supportive structure of the building. Metal roofing sheets can also be installed on the already existing structures/ roofs without or with minimum additional support.

  • Superior Aesthetics with design flexibility – The metal roofing sheet enhance the aesthetics of the structure and gives it a stylish look.

  • Fire/Termite resistance – Most of the metal roofing sheets are non-combustible thus proving a good resistance from fire. These are also resistant to termites unlike the conventional roofing sheets.

  • Variety of colours – Colour coated steel sheets come in a variety of aesthetically pleasing colour. One can choose from various options of colours based on their requirement and personal taste.

  • Energy efficiency – Metal roofing sheets reflects the solar rays, thus reducing cooling cost of the whole structure from 10 to 25%.

  • Availability in various profiles – Metal roofing sheets are available in various profiles along with different lengths, widths and thickness.

  • Recyclability – Metal roofing sheets are sustainable and can be completely recycled. The left over scraps, old panels and tear off metal can be 100% recycled for any other future metal products.

  • Durability and strength – Along with the aesthetic appeal metal roofing sheets also come with higher durability and high strength resulting in longer life span, these sheets resist corrosion, providing longer service life and less maintenance.

  • Weather resistant – Steel roofing sheets have higher resistance to weather as compared to other conventional roofing materials this includes cracking, leakage etc.

  • Maintenance free/ requires less maintenance – As compared to the traditional roofing, these sheets require less maintenance. Due to resistance to weather, higher durability these roofs requires very less or no maintenance, thus saving on the recurring cost to maintain the structure.

  • Number of applications – The steel roofing sheets can be used for many type of applications by the house owners, like roof on roof, portico, garage, porches etc. due to its cost effectiveness and higher durability it is one of the most preferred medium for primary as well as secondary roofing applications.

Based on the various benefits discussed here, it can very well be concluded that with proper installation steel sheets are one of the trending and most sort after roofing solution available in the market. Along with increasing the aesthetics and style quotient of the building they are highly durable and low maintenance. These are cost effective and can be used for various applications in residential as well as commercial sectors.

Durashine has excellent corrosion protection due to ZN AL alloy ( 55% Al, 43.4% Zn, 1.6% Si) coated steel base. Its advanced paint technology provides a durable, baked-on paint finish that resists peeling, chipping and cracking.

Durashine, from the house of Tata Blusescope steel offers a wide range of colour coated steel sheets, which have a number of benefits. These sheets are Long lasting, have higher strength and load bearing capacity, they keep the interiors cooler as compared to the outside temperature, Durashine performs better during rains and comes in a variety of aesthetically pleasing colours.

From roofing sheets to roofing tiles, wall cladding solutions to roof liners, choose the most ideal metal roofing solution for your commercial or residential use or reach visit us here to know more about various metal roofing and wall cladding solutions.

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!!

Thinking about re-roofing, how about a transformation in your roof system

Thinking about re-roofing, how about a transformation in your roof system

Industrial roofing structures often deteriorate due to prevailing weather conditions, exposure to chemicals or pollutants and several other environmental factors. Time and climatic conditions cause a lot of wear and tear of commercial and industrial roofing structures and components. After considerable years of existence, roofing of any given industrial or commercial facility needs an overhaul or complete re-roofing in some cases.

Industrial roofing costs vary widely and may seem expensive regardless of the type or quality. But it is this roofing that is the only thing standing between your business and the harsh environmental conditions. Roofing failures can cause damage to expensive equipment and result in increased downtime. Unattended roof problems can cause financial loses or even spell an end for your profitable business.


So, how do you know that it is the right time to upgrade your Roof?

Here are some important signs that show that your roof needs repairs and replacement

  1. Age of the Roof
    Most experts agree that a typical GI or an asbestos roof will last between 8-12 years depending on the prevailing weather conditions. If it is older that 10-12 years, chances are the roof needs to be replaced
  2. Interior Water Incursion
    This is the most obvious sign of a roof damage. If left unattended, the problem aggravates and turns into serious water incursions. Reaching out to a professional for an assessment is the right thing to do in such a situation
  3. Deteriorated asbestos roofs
    There are many industrial clusters in India which were established in the 1990s. Many buildings were built by using asbestos roofs. These buildings now definitely need their old deteriorated roofs to be replaced
  4. Deterioration Of Roof Supports and sagging roofs
    If there are signs of such dips, low spots or sagging of roofs and areas on roof with water pooling, this may indicate that the underpinnings and supports of the roof have been damaged. In case of insulated roofs, the insulation is soaked wet and contracted and the joists and rafters holding up the roof are broken or sagged.
  5. Corrosion and blistering
    Humid climate, proximity to sea and pollution can cause corrosion in metal roofs. The corroded roofs are prone to leakages, higher maintenance and further result in damages to equipment under the roof.

Assessment and allocation of funds is only the initial step a facility manager or owner takes while planning for a Re-roofing project. Selection of the right roofing materials and hiring a capable roofing contractor is the most important factor to make sure the re-roofing project is completed successfully.


Selecting the Right Roofing service provider

In India, the process of re-roofing is indeed complex and facility owners or managers often face many challenges during the process. Fragmented suppliers, absence of one-stop-solution and lack of scalability as per project requirement; are some of the issues faced while taking the right decision.

While considering re-roofing services, it can be tempting to go for the lowest bid. The lowest bid holder may save your business capital in the short term but over time such a decision can have an adverse effect and result into higher losses. In an effort to offer a lower price, the contractor may use cheaper materials, unsafe work practices and untrained manpower or the contractor may be uninsured which can further lead the fate of project into uncertainty.

Below are some of factors to consider while selecting a roofing contractor

  1. Installation expertise and quality workmanship
  2. Cost effectiveness
  3. Quick turnaround time
  4. Usage of high quality roofing products
  5. Re roofing techniques that enable minimal downtime of your business operations
  6. Insurance, licences and certifications
  7. Recommendation and references

Going for a re-roofing project is a costly and long term investment for facility owners seeking quality, durability and assurance.

Tata BlueScope Steel provides turnkey re-roofing services for the industrial, infrastructure and commercial sectors through LYSAGHT Re Roofing Solutions.

LYSAGHT® Re-roofing Redefined

Known for its exceptional customer focus, strong engineering capability, quality solutions and a wide product basket; LYSAGHT® has also evolved as an engineering expert in reroofing and retrofitting jobs. With expertise in construction & engineering and pool of certified builder network the brand has provided these solutions for an area of more than 35 million square meters so far.

With the LYSAGHT 360 degree Re roofing process and systematic project management; we ensure that project and your investments are in safe hands;

Before commencing work, we complete an extensive roof inspection to detect any issues that may affect the re-roofing process.

We identify potential limitations and make a reroofing suggestion that takes into account all the specifics of your structure.

A strong in-house engineering team offers technical support that includes optimized design and detailing.

Strategically located manufacturing plants at multiple locations ensure on-time and uniformed quality material supply.

Technically trained team of construction specialists from LYSAGHT®, ensure a seamless reroofing process within stipulated time and with great finish. With construction capabilities of over 7 Million sq. mt. and safety measures reiterated by 1.2 Million LTI Free man-hours we deliver solutions with Zero Harm and Zero Downtime.


Executing every project with extreme precision and building aesthetically superior structures, our team is also available during the post implementation phase for a seamless and hassle free experience.

Thinking about Re-roofing? You can consider us as your most trusted partner to execute this transformation. Contact us to know more about Re-roofing services.

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

Standing Seam Roofing System- A versatile, architecturally superior and Weather proof roofing solution

What is standing seam Roofing system?

Standing seam metal roofing is a concealed fixed roof system which features vertical ribs with a flat space or pan in between. The side edges of one roof panel are zipped or seamed along the length with the adjoining roof panels. The roof panels are attached to the purlins or secondary members with specially designed clips or clamps.  The concealed fix system requires no piercing fasteners and helps provide weather tightness and superior resistance to wind uplift.

A Smart and sustainable Steel building technology
A: Standing seam roof profile    
Light Gauge Framing System Sustainable Steel building technology
B: Concealed fixing of standing seam roof profile on clips


What are the advantages of standing seam Roofing system?

Concealed fixed roofing system

Standing seam roofing comes with concealed fix system which requires no piercing fasteners and helps provide weather tightness and superior resistance to wind uplift. With no exposed fasteners, the straight lines of your roof remain clean and smooth.

Allows for Thermal expansion and contraction

This system is fixed over specially design clips such that it allows for lateral of roof movement which results from the thermal effect

Design flexibility

Standing seam roof systems available in tapered and curved sheets to fulfil the most challenging design criteria. Suitable for roofs with low slopes.

On-Site Roll-Forming

Standing seam roof systems can be manufactured on site using mobile roll-forming technology, which not only gives single length from the ridge of the roof to the eave, but also helps to make it a leak-proof structure with better control over quality installation.

Sleek, consistent, & modern look

Standing seam roof system is suitable for architectural applications because of its modern and clean look. In addition to the sleek, straight lines offered by this roof system, the roof can come in virtually any color, including custom colors, to match any structure.High design flexibility with multiple profile shapes makes it an architecturally superior roofing profile


Metal roofs are already a long lasting and low maintenance roofing solution, especially when compared to other roofing types. Since standing seam roofing comes with concealed fix system which requires no piercing fasteners, there are no instances of damaging or loosening of fasteners or the roof surface.

Standing seam roof system’s design flexibility, weather tightness and versatility makes it an excellent choice for architecturally superior buildings for commercial, industrial and infrastructural applications

Tata BlueScope Steel offers the most advanced and versatile standing roof systems in India with and MR 24 Roofing system and LYSAGHT® FLEXLOK 400 roofing system

MR 24 360 degree Standing Seam Roofing System

The MR-24® Roof System is like a monolithic steel membrane, covering your entire building. The panels are joined together with a Pittsburgh 360 degree double-lock standing seam, and fastened to the purlins with a unique clip formed into the seam. Independent surveys show that MR-24® Roof System is the most specified standing seam roof in the market, with more than two billion square feet installed since its introduction in 1969.

Click here for more information: solutions/lysaght/corrugated-roof-sheets-and-wall-cladding/mr24/


LYSAGHT FLEX-LOK concealed standing seam system is a roofing system with an innovative architectural appearance. It can be roll formed in flat, curved or tapered shape as per various architectural requirements and provide architects with a more flexible and creative roofing solution.

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Tata BlueScope Steel is one of the largest manufacturer roof and wall cladding products in India. Apart from roofing solutions, the range of products includes Decking sheets, Purlins, Solar Module Mounting Structures and allied accessories. For more information on our products and services please write us at

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.