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Product catalogue
A1 External Wall Insulation Systems
Wetherby Wall Systems’ A1 External Wall Insulation (EWI) systems are fully non-combustible façade solutions featuring ROCKWOOL® A1 stone wool insulation and 100% non-combustible system components. Tested to BS EN 13501-1, they deliver zero smoke, zero flame and zero flaming droplets, ensuring the highest level of fire safety and long-term performance. Suitable for masonry, steel frame and timber frame construction, these systems provide outstanding thermal efficiency, durability and weather resistance. Independently certified by BBA and KIWA, they support Building Safety Act compliance and sustainable, future-proof building design.
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