Weather Defence™

Weather Defence™ is a revolutionary external sheathing board, faced with water repellent material for superior weather protection. Strong, highly moisture resistant and A1 non combustible. Weather Defence™ is a faster way to a weather tight building compared to traditional sheathing board products. Complies with BS EN 15283 Type GM-H1, GM-I and GM-F..

Further information


Suitable for external sheathing applications in steel or timber frame construction with rainscreen, insulated render, brick or block facade systems.


  • Dimensionally stable, reliable airtightness* Quick and easy to cut and install saving time and reducing installed cost* Water, weather and mould resistant, can now be left installed and exposed for up to 12 months on site before you need to complete the final cladding* No need for cutting area, power tools or dust extractor* Can eliminate the need for breathable membrane saving time and reducing installed cost* Double BBA certified* Fully A1 non-combustible, compliant for structures above 18m.

Reaction to fire: A1, non-combustible
Colour: Purple


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