{"product_id":"csm-450g-1-2-roll-36-metres","title":"Chopped Strand Mat 450g 1\/2 Roll (36 metres)","description":"\u003cp data-start=\"998\" data-end=\"1319\"\u003e\u003cstrong data-start=\"998\" data-end=\"1031\"\u003e450g Chopped Strand Mat (CSM)\u003c\/strong\u003e is the most commonly used reinforcement within GRP fibreglass roofing systems. Manufactured from \u003cstrong data-start=\"1129\" data-end=\"1212\"\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=\"1321\" data-end=\"1619\"\u003eThe \u003cstrong data-start=\"1325\" data-end=\"1407\"\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=\"1497\" data-end=\"1570\"\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=\"1621\" data-end=\"1814\"\u003e450g matting is widely used as the \u003cstrong data-start=\"1656\" data-end=\"1709\"\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=\"1816\" data-end=\"2055\"\u003eCompared with heavier reinforcement such as \u003cstrong data-start=\"1860\" data-end=\"1887\"\u003e600g chopped strand mat\u003c\/strong\u003e, the 450g version is \u003cstrong data-start=\"1909\" data-end=\"1998\"\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=\"2057\" data-end=\"2432\"\u003eThe consistent fibre distribution allows for \u003cstrong data-start=\"2102\" data-end=\"2154\"\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=\"2330\" data-end=\"2431\"\u003efacilitates topcoat application and helps achieve strong adhesion and full topcoat colour opacity\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2434\" data-end=\"2642\"\u003eAs a general guide for roofing laminates, installers typically use \u003cstrong data-start=\"2501\" data-end=\"2585\"\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=\"2644\" data-end=\"2823\"\u003eThis \u003cstrong data-start=\"2649\" data-end=\"2689\"\u003e450g Half Roll of chopped strand mat\u003c\/strong\u003e is supplied in a convenient \u003cstrong data-start=\"2718\" data-end=\"2737\"\u003e36 metre length\u003c\/strong\u003e, making it ideal for medium sized roofing projects where a full roll is not required.\u003c\/p\u003e\n\u003cp data-start=\"2825\" data-end=\"2916\"\u003e450g chopped strand mat is suitable for a wide range of GRP roofing applications including:\u003c\/p\u003e\n\u003cul data-start=\"2918\" data-end=\"3148\"\u003e\n\u003cli data-section-id=\"123y9tk\" data-start=\"2918\" data-end=\"2934\"\u003e\n\u003cp data-start=\"2920\" data-end=\"2934\"\u003eGarage roofs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ahph8s\" data-start=\"2935\" data-end=\"2951\"\u003e\n\u003cp data-start=\"2937\" data-end=\"2951\"\u003eDormer roofs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"eiavux\" data-start=\"2952\" data-end=\"2976\"\u003e\n\u003cp data-start=\"2954\" data-end=\"2976\"\u003eFlat roof extensions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1628re1\" data-start=\"2977\" data-end=\"3008\"\u003e\n\u003cp data-start=\"2979\" data-end=\"3008\"\u003eOrangeries and garden rooms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"rg5biy\" data-start=\"3009\" data-end=\"3033\"\u003e\n\u003cp data-start=\"3011\" data-end=\"3033\"\u003eNew build flat roofs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"y5i3v\" data-start=\"3034\" data-end=\"3068\"\u003e\n\u003cp data-start=\"3036\" data-end=\"3068\"\u003eFull roof rip-off replacements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"8kfp9y\" data-start=\"3069\" data-end=\"3097\"\u003e\n\u003cp data-start=\"3071\" data-end=\"3097\"\u003eRoofcell overlay systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1bqn6xu\" data-start=\"3098\" data-end=\"3148\"\u003e\n\u003cp data-start=\"3100\" data-end=\"3148\"\u003eDIY and professional GRP roofing installations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3150\" data-end=\"3153\"\u003e\n\u003ch2 data-section-id=\"1ihnine\" data-start=\"3155\" data-end=\"3173\"\u003eSizes Available\u003c\/h2\u003e\n\u003cp data-start=\"3175\" data-end=\"3269\"\u003e450g chopped strand mat is available in multiple sizes to suit different project requirements:\u003c\/p\u003e\n\u003cul data-start=\"3271\" data-end=\"3393\"\u003e\n\u003cli data-section-id=\"vblmjt\" data-start=\"3271\" data-end=\"3300\"\u003e\n\u003cp data-start=\"3273\" data-end=\"3300\"\u003e\u003cstrong data-start=\"3273\" data-end=\"3298\"\u003eFull Roll – 73 metres\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"fgasbc\" data-start=\"3301\" data-end=\"3330\"\u003e\n\u003cp data-start=\"3303\" data-end=\"3330\"\u003e\u003cstrong data-start=\"3303\" data-end=\"3328\"\u003eHalf Roll – 36 metres\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"oiog1v\" data-start=\"3331\" data-end=\"3363\"\u003e\n\u003cp data-start=\"3333\" data-end=\"3363\"\u003e\u003cstrong data-start=\"3333\" data-end=\"3361\"\u003eQuarter Roll – 18 metres\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"18w8avz\" data-start=\"3364\" data-end=\"3393\"\u003e\n\u003cp data-start=\"3366\" data-end=\"3393\"\u003e\u003cstrong data-start=\"3366\" data-end=\"3393\"\u003eCut per metre available\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3395\" data-end=\"3590\"\u003eFor heavier reinforcement requirements, \u003cstrong data-start=\"3435\" data-end=\"3473\"\u003e600g heavy duty chopped strand mat\u003c\/strong\u003e is also available in \u003cstrong data-start=\"3495\" data-end=\"3532\"\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":39453742694563,"sku":"H450","price":53.55,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0525\/6160\/8867\/products\/IMGL0467-H450.jpg?v=1617055009","url":"https:\/\/fibreglassroofkits.com\/products\/csm-450g-1-2-roll-36-metres","provider":"Fibreglass Roof Kits","version":"1.0","type":"link"}