{"product_id":"csm-450g-full-roll-73-metres","title":"Chopped Strand Mat 450g Full Roll (73 metres)","description":"\u003cp data-start=\"1983\" data-end=\"2304\"\u003e450g Chopped Strand Mat (CSM) is the \u003cstrong data-start=\"2020\" data-end=\"2094\"\u003emost commonly used reinforcement within GRP fibreglass roofing systems\u003c\/strong\u003e. Manufactured from \u003cstrong data-start=\"2114\" data-end=\"2197\"\u003eE-glass fibres randomly distributed and bonded together with an emulsion binder\u003c\/strong\u003e, the mat provides the structural reinforcement of the laminate when combined with polyester roofing resin.\u003c\/p\u003e\n\u003cp data-start=\"2306\" data-end=\"2604\"\u003eThe \u003cstrong data-start=\"2310\" data-end=\"2392\"\u003e450g grammage refers to the weight of glass fibres per square metre of matting\u003c\/strong\u003e. In GRP roofing systems, the structural strength of the finished laminate comes from the \u003cstrong data-start=\"2482\" data-end=\"2555\"\u003ecombination of chopped strand glass reinforcement and polyester resin\u003c\/strong\u003e, as resin on its own becomes brittle once cured.\u003c\/p\u003e\n\u003cp data-start=\"2606\" data-end=\"2799\"\u003e450g matting is widely used as the \u003cstrong data-start=\"2641\" data-end=\"2694\"\u003estandard glass weight across the roofing industry\u003c\/strong\u003e, providing an excellent balance of strength, durability and workability for most flat roof applications.\u003c\/p\u003e\n\u003cp data-start=\"2801\" data-end=\"3040\"\u003eCompared with heavier reinforcement such as \u003cstrong data-start=\"2845\" data-end=\"2872\"\u003e600g chopped strand mat\u003c\/strong\u003e, the 450g version is \u003cstrong data-start=\"2894\" data-end=\"2983\"\u003emore malleable and easier to work around roofing trims, corners, outlets and upstands\u003c\/strong\u003e, making it particularly suited to roofing installations.\u003c\/p\u003e\n\u003cp data-start=\"3042\" data-end=\"3417\"\u003eThe consistent fibre distribution allows for \u003cstrong data-start=\"3087\" data-end=\"3139\"\u003efast wet-out and easy resin flow through the mat\u003c\/strong\u003e, helping installers bring the resin through the laminate efficiently. This promotes good consolidation, reduces trapped air and produces a high quality laminate surface which \u003cstrong data-start=\"3315\" data-end=\"3416\"\u003efacilitates topcoat application and helps achieve strong adhesion and full topcoat colour opacity\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"3419\" data-end=\"3693\"\u003eAs a general guide for roofing laminates, installers typically use \u003cstrong data-start=\"3486\" data-end=\"3570\"\u003eapproximately 1.5kg of resin per m² when laminating with 450g chopped strand mat\u003c\/strong\u003e, including an allowance for normal installation wastage. For a full roll this equates to \u003cstrong data-start=\"3660\" data-end=\"3692\"\u003eapproximately 100kg of resin\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"3695\" data-end=\"3786\"\u003e450g chopped strand mat is suitable for a wide range of GRP roofing applications including:\u003c\/p\u003e\n\u003cul data-start=\"3788\" data-end=\"4016\"\u003e\n\u003cli data-section-id=\"1vu59oe\" data-start=\"3788\" data-end=\"3823\"\u003e\n\u003cp data-start=\"3790\" data-end=\"3823\"\u003eDIY fibreglass roofing projects\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1opj47x\" data-start=\"3824\" data-end=\"3863\"\u003e\n\u003cp data-start=\"3826\" data-end=\"3863\"\u003eProfessional GRP roof installations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"rg5biy\" data-start=\"3864\" data-end=\"3888\"\u003e\n\u003cp data-start=\"3866\" data-end=\"3888\"\u003eNew build flat roofs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1cqp2dw\" data-start=\"3889\" data-end=\"3918\"\u003e\n\u003cp data-start=\"3891\" data-end=\"3918\"\u003eExtensions and orangeries\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ahph8s\" data-start=\"3919\" data-end=\"3935\"\u003e\n\u003cp data-start=\"3921\" data-end=\"3935\"\u003eDormer roofs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"123y9tk\" data-start=\"3936\" data-end=\"3952\"\u003e\n\u003cp data-start=\"3938\" data-end=\"3952\"\u003eGarage roofs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1k27zez\" data-start=\"3953\" data-end=\"3987\"\u003e\n\u003cp data-start=\"3955\" data-end=\"3987\"\u003eFull rip-off roof replacements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"8kfp9y\" data-start=\"3988\" data-end=\"4016\"\u003e\n\u003cp data-start=\"3990\" data-end=\"4016\"\u003eRoofcell overlay systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4018\" data-end=\"4178\"\u003eThis product is supplied as a \u003cstrong data-start=\"4048\" data-end=\"4101\"\u003efull roll measuring 73 metres long x 1 metre wide\u003c\/strong\u003e, making it ideal for larger roofing projects and continuous laminating work.\u003c\/p\u003e\n\u003cp data-start=\"4180\" data-end=\"4450\"\u003eFull rolls generally provide \u003cstrong data-start=\"4209\" data-end=\"4270\"\u003ethe best value per metre compared with smaller roll sizes\u003c\/strong\u003e. They can also be \u003cstrong data-start=\"4289\" data-end=\"4348\"\u003estored without a shelf life when kept in dry conditions\u003c\/strong\u003e, making them a practical option for professional installers who regularly carry out GRP roofing work.\u003c\/p\u003e\n\u003chr data-start=\"4452\" data-end=\"4455\"\u003e\n\u003ch2 data-section-id=\"1ihnine\" data-start=\"4457\" data-end=\"4475\"\u003eSizes Available\u003c\/h2\u003e\n\u003cp data-start=\"4477\" data-end=\"4571\"\u003e450g chopped strand mat is available in multiple sizes to suit different project requirements:\u003c\/p\u003e\n\u003cul data-start=\"4573\" data-end=\"4695\"\u003e\n\u003cli data-section-id=\"vblmjt\" data-start=\"4573\" data-end=\"4602\"\u003e\n\u003cp data-start=\"4575\" data-end=\"4602\"\u003e\u003cstrong data-start=\"4575\" data-end=\"4600\"\u003eFull Roll – 73 metres\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"fgasbc\" data-start=\"4603\" data-end=\"4632\"\u003e\n\u003cp data-start=\"4605\" data-end=\"4632\"\u003e\u003cstrong data-start=\"4605\" data-end=\"4630\"\u003eHalf Roll – 36 metres\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"oiog1v\" data-start=\"4633\" data-end=\"4665\"\u003e\n\u003cp data-start=\"4635\" data-end=\"4665\"\u003e\u003cstrong data-start=\"4635\" data-end=\"4663\"\u003eQuarter Roll – 18 metres\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"18w8avz\" data-start=\"4666\" data-end=\"4695\"\u003e\n\u003cp data-start=\"4668\" data-end=\"4695\"\u003e\u003cstrong data-start=\"4668\" data-end=\"4695\"\u003eCut per metre available\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4697\" data-end=\"4892\"\u003eFor heavier reinforcement requirements, \u003cstrong data-start=\"4737\" data-end=\"4775\"\u003e600g heavy duty chopped strand mat\u003c\/strong\u003e is also available in \u003cstrong data-start=\"4797\" data-end=\"4834\"\u003equarter, half and full roll sizes\u003c\/strong\u003e (metre lengths differ due to the increased glass weight).\u003c\/p\u003e","brand":"ALL","offers":[{"title":"Default Title","offer_id":37519416918179,"sku":"EM450","price":82.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0525\/6160\/8867\/products\/IMGL0469-F450.jpg?v=1617055027","url":"https:\/\/fibreglassroofkits.com\/products\/csm-450g-full-roll-73-metres","provider":"Fibreglass Roof Kits","version":"1.0","type":"link"}