Granite® range offers unparalleled sustainability, durability, and aesthetics
ArcelorMittal Europe – Flat Products has an extensive offer of organic coated steels for roofing and cladding applications. Chief amongst them is the Granite® range which includes solutions for all types of buildings and climates – and an unmatched range of colours and finishes. Now Granite® HDX and Granite® HDXtreme are the first organic coated steels to be available with ArcelorMittal’s XCarb® recycled and renewably produced label. The label indicates that the steels are created with recycled content using renewable sources of energy. The environmental savings can reduce the carbon footprint of classic profiles by up to half. And at the end of their life, all Granite® coated steels can be fully recovered and recycled, making them an ideal solution for the circular economy.
With sustainability top of the agenda in building and construction, ArcelorMittal’s organic coated offer provides architects, builders, and owners with a full range of innovative and durable solutions. When coupled with ArcelorMittal’s XCarb® recycled and renewably produced label, the carbon footprint of classic organic coated profiles can be reduced by up to 60-percent. For sandwich panels, the reduction is up to 36-percent.
“Combing ArcelorMittal’s XCarb® recycled and renewable label with products such as Granite® HDXtreme makes steel building systems both durable and sustainable,” notes André Lavaud, Organic Coating Product Coordinator for ArcelorMittal. “The advantages are very clear when you compare steel to other materials such as concrete and aluminium.”
Maximising energy efficiency
For owners who want to maximise the energy efficiency of their buildings, ArcelorMittal Europe – Flat Products can offer solutions which enhance the reflectivity of roofs and support solar structures. “Enhancing reflectivity is an easy way to reduce the amount of heat a roof absorbs, and leads to lower cooling costs for the building,” says Patrick Le Pense, Segment Leader for Building Skins and Civil Engineering at ArcelorMittal Europe – Flat Products. “And it can lead to credits in building sustainability rating systems such as BREEAM and LEED.”
Reflectivity is calculated using the Solar Reflective Index (SRI). This industry standard considers a range of factors including location, the design of the roof, and wind loads to identify the right colour for the roof to maximise reflectivity. As SRI requires a complex set of calculations, ArcelorMittal can perform the calculation to identify the most appropriate roof colour for any building. And with more than 50 colours available for some of our organic coated solutions, ArcelorMittal Europe – Flat Products can provide the most suitable colour.
“Durability of the steel’s aesthetics is almost as important as its corrosion resistance,” notes Patrick Le Pense. “That is why all of ArcelorMittal’s organic coated steels are tested in a variety of real-life conditions around the world. This enables us to confidently guarantee that the paint layers won’t peel or discolour greatly over time.”
Refurbishing this building in Rennes (France) using Granite® Silky Shine has given it a new life [Copyright Joris Ide]
High strength solutions available
ArcelorMittal’s Granite® coatings can also be applied to high strength steel (HSS) substrates. “Organic coated HSS products can be thinner and lighter than our regular solutions,” notes André Lavaud. “They can be applied to roofs, facades, and structural elements to offer higher strength and lower weight. The use of HSS also reduces the amount of steel required which can have a positive impact on the building’s overall carbon footprint.”
Many building owners want to install solar installations during construction to reduce the energy use of the building during its use phase. To achieve this, they require roofing materials which can match the typical 25-year life of the solar structure. “Granite® is again one of the best options to meet this requirement,” says Patrick Le Pense. “Some Granite® products come with automatic guarantees of up to 40 years. With minor maintenance, that lifetime can exceed 50 years.”
In some European countries, a life cycle analysis (LCA) is mandatory for residential and commercial constructions. The LCA measures the carbon footprint of the building from the production of materials to the building’s end-of-life.
“We are working to complete Environmental Product Declarations for our organic coated steels which take into account the XCarb® recycled and renewably produced label,” says Patrick Le Pense. “The EPDs will give customers all the information they need to calculate the carbon footprint of the building and its LCA. The EPDs for all products that can be purchased with an XCarb® recycled and renewably produced label will be available by the end of 2022. In the interim, ArcelorMittal can provide relevant information to customers for the LCA calculation.”
ArcelorMittal’s INDI building in Gent (Belgium) is finished in Granite® HDXtreme to resist the local maritime climate [Copyright Jeroen Op de Beeck, ArcelorMittal Gent]
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The gold finish of the Granite® Silky Shine used in the new Royal Dutch Mint building has created an icon [Copyright SWAD Video]
Granite® HDX creates and elegant and shiny facade for the Arcus College campus in Haarlen (NL) [Copyright Little Planet]
The jet-black colour of this Granite® clad building creates an eye-catching family home in rural France [Copyright: Joris Ide]
The Harley Davidson showroom in Auvergne (France) makes maximum use of the Granite® pallet [Copyright Bacacier]
Granite® Ultramat is an ideal solution for roofing tiles [Copyright Blachdom Plus]
Granite® HDS panels were prepared onsite in the refurbishment of this municipal steam and energy plant [Copyright Rithideth Kitisrivoraphanh and Gilles Lacroix]