{"product_id":"quietstone-cem-rock-12mm-cement-board-2400-x-1200mm-a1-fire-rated-acoustic-building-board","title":"Quietstone Cem-Rock 12mm Cement Board 2400 x 1200mm – A1 Fire Rated Acoustic Building Board","description":"\u003ch2\u003eDense, durable cement board for acoustic, fire-rated and wet-area construction\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQuietstone Cem-Rock\u003c\/strong\u003e is a 12mm cement fibre building board designed for demanding internal and external applications where strength, moisture resistance, fire performance and added mass matter. Its dense 2400 x 1200mm format makes it particularly useful within soundproofing wall and ceiling build-ups, while its A1 non-combustible classification and water resistance open up applications that standard plasterboard cannot cover.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eImportant acoustic point:\u003c\/strong\u003e Cem-Rock is a dense building board used to add mass and create a robust lining. It is not an acoustic absorber like Quietstone Light. For serious soundproofing, we normally recommend using it as part of a complete system with cavity insulation, sealing and – where required – acoustic isolation.\u003c\/p\u003e\u003ch3\u003eWhy choose Cem-Rock?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e2400 x 1200 x 12mm board\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA1 non-combustible\u003c\/strong\u003e reaction-to-fire classification to EN 13501-1\u003c\/li\u003e\n\u003cli\u003eDense construction: approximately \u003cstrong\u003e11.6kg\/m²\u003c\/strong\u003e and 950kg\/m³\u003c\/li\u003e\n\u003cli\u003eSuitable for \u003cstrong\u003einternal and external\u003c\/strong\u003e applications\u003c\/li\u003e\n\u003cli\u003eWater resistant and dimensionally stable in wet conditions\u003c\/li\u003e\n\u003cli\u003ePasses freeze\/thaw, soak\/dry and heat\/rain testing\u003c\/li\u003e\n\u003cli\u003eSuitable for humid environments including swimming pools, saunas and wet rooms\u003c\/li\u003e\n\u003cli\u003eCan be painted, rendered, tiled or left in its natural grey finish\u003c\/li\u003e\n\u003cli\u003eStrong but workable – can be scored\/cut on site\u003c\/li\u003e\n\u003cli\u003eFlexible enough for curved work, with a published bending radius of approximately 2m\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSoundproofing applications\u003c\/h3\u003e\u003cp\u003eFor airborne-noise control, mass is one of the core elements of a good wall or ceiling. Cem-Rock can be used as a dense lining layer in suitable acoustic constructions, especially where moisture, durability or fire performance also matters.\u003c\/p\u003e\u003cp\u003eTypical Soundproofing King build-ups may combine Cem-Rock with \u003ca href=\"\/products\/rwa45-rockwool\"\u003eRockwool RWA45 acoustic mineral wool\u003c\/a\u003e, \u003ca href=\"\/products\/100mm-rw3-rockwool\"\u003eRockwool RW3\u003c\/a\u003e, \u003ca href=\"\/collections\/acoustic-membranes-mlv\"\u003eacoustic membranes \/ MLV\u003c\/a\u003e, \u003ca href=\"\/collections\/clips-channels-resilient-bars\"\u003eisolation clips and channels\u003c\/a\u003e and \u003ca href=\"\/products\/acoustic-sealant-ac50-380ml\"\u003eacoustic sealant\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eWhere Cem-Rock can be used\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSoundproof wall and ceiling systems\u003c\/li\u003e\n\u003cli\u003eInternal partition walls and dry lining\u003c\/li\u003e\n\u003cli\u003eWet rooms, bathrooms, swimming pools and saunas\u003c\/li\u003e\n\u003cli\u003eTile-backer applications\u003c\/li\u003e\n\u003cli\u003eSoffits and ceilings\u003c\/li\u003e\n\u003cli\u003eExternal façades and sheathing\u003c\/li\u003e\n\u003cli\u003eFireplaces and chimney breasts\u003c\/li\u003e\n\u003cli\u003eBoiler rooms and fire-rated partitions\u003c\/li\u003e\n\u003cli\u003eFactories, workshops and commercial buildings\u003c\/li\u003e\n\u003cli\u003eCurved surfaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical data\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBoard size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2400 x 1200 x 12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAverage weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e11.6kg\/m² (approx. 33.4kg per board)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAverage density\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e950kg\/m³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReaction to fire\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA1 non-combustible – EN 13501-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBending strength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥ 6.2MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBending radius\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.0m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermal conductivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.39W\/mK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWater impermeability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFreeze\/thaw\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMould growth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eSoundproofing King advice\u003c\/h3\u003e\u003cp\u003eDo not choose a board from one headline dB figure alone. Actual noise reduction depends on the complete tested wall or ceiling construction, including framing, cavities, fixings, joints and flanking paths. If you send us the wall\/ceiling type, dimensions and the noise you are trying to reduce, we can help specify the rest of the build-up.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003eContact Soundproofing King for project pricing and specification advice.\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Quietstone","offers":[{"title":"2400 x 1200 x 12mm","offer_id":54846665720147,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/0360\/7891\/files\/quietstone-cem-rock-flexible-cement-board.jpg?v=1788436849","url":"https:\/\/soundproofingking.co.uk\/products\/quietstone-cem-rock-12mm-cement-board-2400-x-1200mm-a1-fire-rated-acoustic-building-board","provider":"Soundproofing King","version":"1.0","type":"link"}