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.
- 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.
- 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
- 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;
- 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.
- 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
Pretreatment
Corrosion-resistant proprietary conversion coatingPrimer Coat
Universal corrosion inhibitive primer.
Nominal dry film thickness 5µm each sideFinish 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. - 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!!
