{"product_id":"csm-450g-1-4-roll-18-metres","title":"Chopped Strand Mat 450g 1\/4 Roll (18 metres)","description":"\u003cp data-start=\"1026\" data-end=\"1347\"\u003e\u003cstrong data-start=\"1026\" data-end=\"1059\"\u003e450g Chopped Strand Mat (CSM)\u003c\/strong\u003e is the most commonly used reinforcement within GRP fibreglass roofing systems. Manufactured from \u003cstrong data-start=\"1157\" data-end=\"1240\"\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=\"1349\" data-end=\"1647\"\u003eThe \u003cstrong data-start=\"1353\" data-end=\"1435\"\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=\"1525\" data-end=\"1598\"\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=\"1649\" data-end=\"1842\"\u003e450g matting is widely used as the \u003cstrong data-start=\"1684\" data-end=\"1737\"\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=\"1844\" data-end=\"2083\"\u003eCompared with heavier reinforcement such as \u003cstrong data-start=\"1888\" data-end=\"1915\"\u003e600g chopped strand mat\u003c\/strong\u003e, the 450g version is \u003cstrong data-start=\"1937\" data-end=\"2026\"\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=\"2085\" data-end=\"2460\"\u003eThe consistent fibre distribution allows for \u003cstrong data-start=\"2130\" data-end=\"2182\"\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=\"2358\" data-end=\"2459\"\u003efacilitates topcoat application and helps achieve strong adhesion and full topcoat colour opacity\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2462\" data-end=\"2670\"\u003eAs a general guide for roofing laminates, installers typically use \u003cstrong data-start=\"2529\" data-end=\"2613\"\u003eapproximately 1.5kg of resin per m² when laminating with 450g chopped strand mat\u003c\/strong\u003e, including an allowance for normal installation wastage.\u003c\/p\u003e\n\u003cp data-start=\"2672\" data-end=\"2876\"\u003eThis \u003cstrong data-start=\"2677\" data-end=\"2720\"\u003e450g Quarter Roll of chopped strand mat\u003c\/strong\u003e is supplied in a convenient \u003cstrong data-start=\"2749\" data-end=\"2768\"\u003e18 metre length\u003c\/strong\u003e, making it ideal for smaller roofing projects, repair work or situations where a full roll is not required.\u003c\/p\u003e\n\u003cp data-start=\"2878\" data-end=\"2969\"\u003e450g chopped strand mat is suitable for a wide range of GRP roofing applications including:\u003c\/p\u003e\n\u003cul data-start=\"2971\" data-end=\"3201\"\u003e\n\u003cli data-section-id=\"123y9tk\" data-start=\"2971\" data-end=\"2987\"\u003e\n\u003cp data-start=\"2973\" data-end=\"2987\"\u003eGarage roofs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ahph8s\" data-start=\"2988\" data-end=\"3004\"\u003e\n\u003cp data-start=\"2990\" data-end=\"3004\"\u003eDormer roofs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"eiavux\" data-start=\"3005\" data-end=\"3029\"\u003e\n\u003cp data-start=\"3007\" data-end=\"3029\"\u003eFlat roof extensions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1628re1\" data-start=\"3030\" data-end=\"3061\"\u003e\n\u003cp data-start=\"3032\" data-end=\"3061\"\u003eOrangeries and garden rooms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"rg5biy\" data-start=\"3062\" data-end=\"3086\"\u003e\n\u003cp data-start=\"3064\" data-end=\"3086\"\u003eNew build flat roofs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"y5i3v\" data-start=\"3087\" data-end=\"3121\"\u003e\n\u003cp data-start=\"3089\" data-end=\"3121\"\u003eFull roof rip-off replacements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"8kfp9y\" data-start=\"3122\" data-end=\"3150\"\u003e\n\u003cp data-start=\"3124\" data-end=\"3150\"\u003eRoofcell overlay systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1bqn6xu\" data-start=\"3151\" data-end=\"3201\"\u003e\n\u003cp data-start=\"3153\" data-end=\"3201\"\u003eDIY and professional GRP roofing installations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3203\" data-end=\"3206\"\u003e\n\u003ch2 data-section-id=\"1ihnine\" data-start=\"3208\" data-end=\"3226\"\u003eSizes Available\u003c\/h2\u003e\n\u003cp data-start=\"3228\" data-end=\"3322\"\u003e450g chopped strand mat is available in multiple sizes to suit different project requirements:\u003c\/p\u003e\n\u003cul data-start=\"3324\" data-end=\"3446\"\u003e\n\u003cli data-section-id=\"vblmjt\" data-start=\"3324\" data-end=\"3353\"\u003e\n\u003cp data-start=\"3326\" data-end=\"3353\"\u003e\u003cstrong data-start=\"3326\" data-end=\"3351\"\u003eFull Roll – 73 metres\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"fgasbc\" data-start=\"3354\" data-end=\"3383\"\u003e\n\u003cp data-start=\"3356\" data-end=\"3383\"\u003e\u003cstrong data-start=\"3356\" data-end=\"3381\"\u003eHalf Roll – 36 metres\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"oiog1v\" data-start=\"3384\" data-end=\"3416\"\u003e\n\u003cp data-start=\"3386\" data-end=\"3416\"\u003e\u003cstrong data-start=\"3386\" data-end=\"3414\"\u003eQuarter Roll – 18 metres\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"18w8avz\" data-start=\"3417\" data-end=\"3446\"\u003e\n\u003cp data-start=\"3419\" data-end=\"3446\"\u003e\u003cstrong data-start=\"3419\" data-end=\"3446\"\u003eCut per metre available\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3448\" data-end=\"3643\"\u003eFor heavier reinforcement requirements, \u003cstrong data-start=\"3488\" data-end=\"3526\"\u003e600g heavy duty chopped strand mat\u003c\/strong\u003e is also available in \u003cstrong data-start=\"3548\" data-end=\"3585\"\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":37519418065059,"sku":"Q450","price":28.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0525\/6160\/8867\/products\/IMGL0469-F450_20a66e34-7e9f-4f35-83f2-c80cdc0dcae7.jpg?v=1669119332","url":"https:\/\/fibreglassroofkits.com\/products\/csm-450g-1-4-roll-18-metres","provider":"Fibreglass Roof Kits","version":"1.0","type":"link"}