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Underfloor & Underground

Underfloor & Underground

Underfloor & Underground - Competitive Trade Pricing with quantity discounts. Online supplier of Swimming Pool and Basement insulation.

About

Underfloor insulation is a type of insulation that is installed under the floorboards. It will reduce the amount of heat that escapes through the floor, which means you will need less heating to keep your home warm. This means you can save on your energy bills as well as reducing your carbon footprint.

Have a browse of our stock and filter by thickness or coverage on the left-hand side of the page. If you’d like to talk through the suitability of some products for your project, or get a quantity discount quotation please call us on 02039519012 , email sales@insulationstoreonline.co.uk or Live Chat - Lowest UK Prices.

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16 products
newest
100mm Knauf Insulation Rocksilk RS140 Building Slab ( Pack of 2 )
Rock Mineral Wool Slabs Pack Length: 2400mmPack Width: 1200mmPack coverage: 1.44m2Thickness: 100mmQuantity: Pack Of 2
£ 43.41
£ 52.09 Inc VAT
75mm Knauf Insulation Rocksilk RS140 Building Slab ( Pack of 3 )
Rock Mineral Wool Slabs Pack Length: 3600mmPack Width: 1800mmPack coverage: 2.16m2Thickness: 75mmQuantity: Pack Of 3
£ 43.41
£ 52.09 Inc VAT
50mm Knauf Insulation Rocksilk RS140 Building Slab ( Pack of 4 )
Rock Mineral Wool Slabs Pack Length: 4800mmPack Width: 2400mmPack coverage: 2.88m2Thickness: 50mmQuantity: Pack Of 4
£ 43.41
£ 52.09 Inc VAT
40mm Knauf Insulation Rocksilk RS140 Building Slab ( Pack of 5 )
Rock Mineral Wool Slabs Pack Length: 6000mmPack Width: 3000mmPack coverage: 3.60m2Thickness: 40mmQuantity: Pack Of 5
£ 43.41
£ 52.09 Inc VAT
30mm Knauf Insulation Rocksilk RS140 Building Slab ( Pack of 7 )
Rock Mineral Wool Slabs Pack Length: 8400mmPack Width: 4200mmPack coverage: 5.04m2Thickness: 30mmQuantity: Pack Of 7
£ 43.41
£ 52.09 Inc VAT
100mm Knauf Insulation Rocksilk RS100 Building Slab ( Pack of 3 )
Rock Mineral Wool Slabs Pack Length: 3600mmPack Width: 1800mmPack coverage: 2.16m2Thickness: 100mmQuantity: Pack Of 3
£ 43.41
£ 52.09 Inc VAT
75mm Knauf Insulation Rocksilk RS100 Building Slab ( Pack of 4 )
Rock Mineral Wool Slabs Pack Length: 4800mmPack Width: 2400mmPack coverage: 2.88m2Thickness: 75mmQuantity: Pack Of 4
£ 43.41
£ 52.09 Inc VAT
50mm Knauf Insulation Rocksilk RS100 Building Slab ( Pack of 6 )
Rock Mineral Wool Slabs Pack Length: 7200mmPack Width: 4200mmPack coverage: 4.32m2Thickness: 50mmQuantity: Pack Of 6
£ 43.41
£ 52.09 Inc VAT
40mm Knauf Insulation Rocksilk RS100 Building Slab ( Pack of 7 )
Rock Mineral Wool Slabs Pack Length: 8400mmPack Width: 4200mmPack coverage: 5.04m2Thickness: 40mmQuantity: Pack Of 7
£ 43.41
£ 52.09 Inc VAT
30mm Knauf Insulation Rocksilk RS100 Building Slab ( Pack of 10 )
Rock Mineral Wool Slabs Pack Length: 12000mmPack Width: 6000mmPack coverage: 7.20m2Thickness: 30mmQuantity: Pack Of 10
£ 43.41
£ 52.09 Inc VAT
25mm Knauf Insulation Rocksilk RS100 Building Slab ( Pack of 12 )
Rock Mineral Wool Slabs Pack Length: 14400mmPack Width: 7200mmPack coverage: 8.64m2Thickness: 25mmQuantity: Pack Of 12
£ 43.41
£ 52.09 Inc VAT
100mm Knauf Insulation Rocksilk RS80 Building Slab ( Pack of 3 )
Rock Mineral Wool Slabs Pack Length: 3600mmPack Width: 1800mmPack coverage: 2.16m2Thickness: 100mmQuantity: Pack Of 3
£ 43.41
£ 52.09 Inc VAT
75mm Knauf Insulation Rocksilk RS80 Building Slab ( Pack of 4 )
Rock Mineral Wool Slabs Pack Length: 4800mmPack Width: 2400mmPack coverage: 2.88m2Thickness: 75mmQuantity: Pack Of 4
£ 43.41
£ 52.09 Inc VAT
50mm Knauf Insulation Rocksilk RS80 Building Slab ( Pack of 6 )
Rock Mineral Wool Slabs Pack Length: 7200mmPack Width: 3600mmPack coverage: 4.32m2Thickness: 50mmQuantity: Pack Of 6
£ 43.41
£ 52.09 Inc VAT
100mm Knauf Insulation Rocksilk RS60 Building Slab ( Pack of 4 )
Rock Mineral Wool Slabs Pack Length: 4800mmPack Width: 2400mmPack coverage: 2.88m2Thickness: 100mmQuantity: Pack Of 4
£ 43.41
£ 52.09 Inc VAT
75mm Knauf Insulation Rocksilk RS60 Building Slab ( Pack of 6 )
Rock Mineral Wool Slabs Pack Length: 7200mmPack Width: 3600mmPack coverage: 4.32m2Thickness: 75mmQuantity: Pack Of 6
£ 43.41
£ 52.09 Inc VAT
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