{"product_id":"knauf-loft-roll-44-insulation-combi-cut","title":"Knauf Loft Roll 44 Insulation Combi Cut","description":"Knauf Insulation Loft Roll 44 is a high-performance glass mineral wool insulation roll, ideal for use in cold lofts where pitched roofs are insulated at ceiling level. Designed to deliver excellent thermal performance, it’s a trusted solution for improving energy efficiency in homes and buildings.\n\nMade using ECOSE® Technology, Knauf’s bio-based binder, this insulation is kinder to the environment and safer to handle — with no added formaldehyde and less dust or odour. It’s also completely non-combustible, carrying the highest possible Euroclass A1 fire rating, offering extra peace of mind in any residential or commercial setting.\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\nKnauf Loft Roll 44 is available in two formats:\n\nCombi-cut rolls, which are partially perforated for flexible installation between joists or as full-width coverage\n\nReady-cut rolls, pre-slit to specific widths for quick placement between standard joist spacings\n\nAll rolls are supplied in long lengths, making them fast and easy to install — perfect for speeding up insulation jobs. Lightweight and compression-packed, they’re also convenient to carry and store, whether you’re working on a single property or across a larger site.\n\n\u003ch3\u003eThermal and Fire Performance\u003c\/h3\u003e\nThermal conductivity: 0.044 W\/m·K\n\nFire rating: Euroclass A1 – the highest level of non-combustibility under EN 13501-1\n\nSustainable production: Made using recycled materials and ECOSE® binder for improved indoor air quality\n\n\u003ch3\u003eAvailable Thicknesses \u0026amp; Coverage\u003c\/h3\u003e\n100mm: 13.89m² per roll\n\n150mm: 9.18m² per roll\n\n170mm: 8.01m² per roll\n\n200mm: 5.93m² per roll\n\nWhether you're topping up existing insulation or starting from scratch, there’s a size to suit every loft project.\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e \u003ch4\u003e1. Can I install Loft Roll 44 myself, or do I need a professional?\u003c\/h4\u003e Loft Roll 44 is designed to be DIY-friendly. Its combi-cut format makes it easy to fit between joists without extra cutting. Just remember to wear gloves and a mask for comfort and safety. \u003ch4\u003e2. What makes ECOSE® Technology better than traditional insulation binders?\u003c\/h4\u003e ECOSE® Technology uses a natural, formaldehyde-free binder made from rapidly renewable materials. It produces less dust, has a softer feel, and improves indoor air quality — all while offering strong performance and durability. \u003ch4\u003e3. Is 200mm insulation enough for building regulations?\u003c\/h4\u003e Generally, 270mm total depth is recommended to meet current **Part L** UK building regulations for loft insulation. You can achieve this by layering, for example: 100mm between joists and 170mm across joists.\u003cbr\u003e\u003cp\u003eCheck out our full range of \u003ca href=\"https:\/\/jjbuildingmaterials.co.uk\/collections\/insulation\"\u003einsulation\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eBrowse more \u003ca href=\"https:\/\/jjbuildingmaterials.co.uk\/collections\/loft-insulation\"\u003eloft insulation\u003c\/a\u003e available online.\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"100mmn (13.89m2)","offer_id":51553820410198,"sku":"125834","price":48.43,"currency_code":"GBP","in_stock":true},{"title":"150mm (9.18m2)","offer_id":51553820442966,"sku":"110507","price":46.93,"currency_code":"GBP","in_stock":true},{"title":"170mm (8.01m2)","offer_id":51553820475734,"sku":"110506","price":46.42,"currency_code":"GBP","in_stock":true},{"title":"200mm (5.93m2)","offer_id":51553820508502,"sku":"112123","price":40.93,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/4509\/4998\/files\/knauf-loft-roll-44-insulation-combi-cut-5860159.jpg?v=1772656581","url":"https:\/\/jjbuildingmaterials.co.uk\/products\/knauf-loft-roll-44-insulation-combi-cut","provider":"JJ Building Materials","version":"1.0","type":"link"}