{"product_id":"12mm-calcium-silicate-board-2400x1200mm","title":"Calcium Silicate Board – Sheet – Interior \u0026 Exterior Applications","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe 12mm Calcium Silicate Board, measuring 2400mm x 1200mm, is a high-performance, non-combustible sheathing board designed for use behind façade systems, rainscreens, and cladding. Manufactured from calcium silicate reinforced with selected fibers, it provides a dimensionally stable substrate with excellent fire resistance and structural rigidity.\u003c\/p\u003e\u003cp\u003eThis board is suitable for both steel and timber frame applications, forming a robust external sheathing layer that maintains integrity under high temperature and moisture variations. Its smooth, dense surface resists delamination, impact, and weather exposure during construction, ensuring long-term performance.\u003c\/p\u003e\u003cp\u003eEngineered for use in ventilated façade systems, the board has been independently tested to meet fire and durability standards. The 12mm thickness provides enhanced stiffness and strength, making it suitable for medium to high-rise projects where wind loading and mechanical fixing demands are greater.\u003c\/p\u003e\u003cdiv style=\"margin-top:30px;\"\u003e\n\u003ch2 style=\"font-size:22px;font-weight:700;color:#1a1a2e;margin-bottom:16px;\"\u003eProduct Specifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #e0e0e0;border-radius:4px;overflow:hidden;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#1a1a2e;\"\u003e\n\u003cth style=\"padding:12px 16px;text-align:left;color:#ffffff;font-weight:600;text-transform:uppercase;font-size:12px;letter-spacing:0.5px;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"padding:12px 16px;text-align:left;color:#ffffff;font-weight:600;text-transform:uppercase;font-size:12px;letter-spacing:0.5px;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background:#f8f9fa;\"\u003e\n\u003ctd style=\"padding:12px 16px;font-weight:600;color:#333;border-bottom:1px solid #e9ecef;width:45%;\"\u003eThickness\u003c\/td\u003e\n\u003ctd style=\"padding:12px 16px;color:#555;border-bottom:1px solid #e9ecef;\"\u003e12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:12px 16px;font-weight:600;color:#333;border-bottom:1px solid #e9ecef;width:45%;\"\u003eWidth\u003c\/td\u003e\n\u003ctd style=\"padding:12px 16px;color:#555;border-bottom:1px solid #e9ecef;\"\u003e1200mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f8f9fa;\"\u003e\n\u003ctd style=\"padding:12px 16px;font-weight:600;color:#333;border-bottom:1px solid #e9ecef;width:45%;\"\u003eLength\u003c\/td\u003e\n\u003ctd style=\"padding:12px 16px;color:#555;border-bottom:1px solid #e9ecef;\"\u003e2400mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:12px 16px;font-weight:600;color:#333;border-bottom:1px solid #e9ecef;width:45%;\"\u003eSales Unit\u003c\/td\u003e\n\u003ctd style=\"padding:12px 16px;color:#555;border-bottom:1px solid #e9ecef;\"\u003eSheet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f8f9fa;\"\u003e\n\u003ctd style=\"padding:12px 16px;font-weight:600;color:#333;border-bottom:1px solid #e9ecef;width:45%;\"\u003eSales Unit Coverage\u003c\/td\u003e\n\u003ctd style=\"padding:12px 16px;color:#555;border-bottom:1px solid #e9ecef;\"\u003e2.88m2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:12px 16px;font-weight:600;color:#333;border-bottom:1px solid #e9ecef;width:45%;\"\u003ePieces Per Pallet\u003c\/td\u003e\n\u003ctd style=\"padding:12px 16px;color:#555;border-bottom:1px solid #e9ecef;\"\u003e32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFeatures \u0026amp; Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-density calcium silicate composition:\u003c\/strong\u003e Provides excellent dimensional stability and durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-combustible performance:\u003c\/strong\u003e Classified to A1 under BS EN 13501-1.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoisture and weather resistant:\u003c\/strong\u003e Maintains strength and flatness under varying conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile sheathing use:\u003c\/strong\u003e Suitable for both steel and timber frame construction behind cladding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth surface finish:\u003c\/strong\u003e Accepts coatings, membranes, or insulation systems without surface preparation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpact and edge strength:\u003c\/strong\u003e Resists damage during handling, fixing, and service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow movement characteristics:\u003c\/strong\u003e Reduces risk of cracking under thermal or humidity variation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoard size 2400mm x 1200mm x 12mm:\u003c\/strong\u003e Provides optimal coverage with fewer joints.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal sheathing:\u003c\/strong\u003e Forms a stable backing layer behind rainscreen cladding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimber and steel frame walls:\u003c\/strong\u003e Provides a fire-resistant substrate for structural framing systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-rise and commercial buildings:\u003c\/strong\u003e Used in non-combustible external wall linings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular and offsite construction:\u003c\/strong\u003e Ideal for factory-assembled wall panels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal fire protection:\u003c\/strong\u003e Suitable for partitions requiring Class A1 fire-rated performance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Calcium silicate reinforced with fibers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire Rating:\u003c\/strong\u003e A1 under BS EN 13501-1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat applications are suitable for this board?\u003c\/strong\u003e It is suitable for external sheathing, timber and steel frame walls, high-rise buildings, modular construction, and internal fire protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs the board fire-resistant?\u003c\/strong\u003e Yes, it is classified as A1 non-combustible under BS EN 13501-1.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan it withstand moisture?\u003c\/strong\u003e Yes, it maintains strength and flatness when exposed to moisture or changing site conditions.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"londonbricks-uk.co.uk","offers":[{"title":"Default Title","offer_id":55516459696513,"sku":"MM_LB3082","price":112.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0687\/5329\/3624\/files\/691c99dacba616af36c1316536e66740.png?v=1775834058","url":"https:\/\/londonbricks-uk.co.uk\/products\/12mm-calcium-silicate-board-2400x1200mm","provider":"London Bricks UK","version":"1.0","type":"link"}