How to Insulate a Floor
Learn how to insulate a floor effectively. Explore different floor types, best insulation materials, costs, installation methods, and key benefits.
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Trusted UK Supplier
Best selling
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Most popularSaleCelotex
Celotex PIR Insulation Board - 2400mm x 1200mm - All Thicknesses
From £11.70 GBP£12.64Unit price /Unavailable -
Most popularSale -
Most popularSale
Rockwool
Rockwool RWA45 Slab - 1200mm x 600mm - All Thicknesses
From £22.50 GBPUnit price /Unavailable -
Most popularSale
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Most popular
Ecotherm
Ecotherm Eco-Versal PIR Insulation Board - 2400mm x 1200mm - All Thicknesses
From £13.00 GBPUnit price /Unavailable -
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Knauf
Knauf Acoustic Partition Roll - 600mm Width - All Thicknesses
From £43.17 GBPUnit price /Unavailable -
Kingspan
Kingspan Kooltherm K108 Cavity Board - 1200mm x 450mm - All Thicknesses
From £85.74 GBPUnit price /Unavailable
Buy Insulation Online with Fast UK Delivery
From DIY to Large-Scale Projects
Top Insulation Brands Delivered Nationwide
National Insulation Supplies offer an extensive selection of insulation products from leading manufacturers like Celotex, Kingspan, Knauf, Rockwool, and Recticel and much more.
Explore our diverse range of products tailored for various applications, including floor insulation, wall insulation, roof insulation and cavity wall insulation.
Our loft insulation options include a variety of premium products, such as loft roll designed to enhance energy efficiency in your building and even loft boards.
We also provide specialised products such as fire protection insulation, acoustic insulation, and eco-friendly solutions. Whether you need insulated plasterboard, building membranes, or fire-stopping insulation.
Popular by Category
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PIR Insulation
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Loft Insulation
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Acoustic Insulation
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Cavity Wall Insulation
- Knauf Dritherm 32 and 37
- Isover Cavity Wall Slab
- Celotex Thermaclass 21
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Insulated Plasterboard
Insulation Guides
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The Ultimate Roofing Insulation for Storm-Prone Areas
Actis Boost'R Hybrid Roof is an insulating breather membrane that has been rigorously tested and BRE-approved for use in the windiest aprts of the UK.
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What is a U-value?
U-value tells us how well a material keeps heat in or out of a wall, roof, window and floor. The lower the U-value, the better the insulation
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How to Install Underfloor Heating Insulation
Why installing underfloor insulation is essential for ensuring your system works efficiently and effectively.
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How to Board a Loft and Recommended Products
Learn how to board your loft with our step-by-step guide. Discover the benefits of loft boarding, including added storage, improved energy efficiency, and insulation protection. Explore premium loft boards and...
