Home / Building Materials / Insulation / Rock Insulation Rock Insulation Free Delivery on orders over £200. £20 for orders below. (Cornwall only. Devon deliveries will incur a delivery charge.) Filter Price Coverage 1.92M2 2.16M2 2.88M2 4.32M2 5.72M2 5.76M2 Length 1200mm Thickness 100mm 140mm 70mm 90mm Width 400mm 600mm Brand Knauf Rockwool Clear filters Sort By Sort by:Most popularWhat's newPrice low to highPrice high to lowName A to ZName Z to A Showing products 1 to 9 of 9 Sort by:Most popularWhat's newPrice low to highPrice high to lowName A to ZName Z to A Knauf Rocksilk Flexi Slab 1200 X 600 X 140mm £31.02 £37.22 inc. VAT Add to cart Quickview Knauf Rocksilk Flexi Slab 1200 X 600 X 90mm £37.12 £44.54 inc. VAT Add to cart Quickview Knauf Rocksilk Flexi Slab 1200 X 600 X 70mm £32.87 £39.44 inc. VAT Add to cart Quickview Rockwool Flexi Slab 1200 X 400 X 100mm £36.33 £43.60 inc. VAT Add to cart Quickview Rockwool Flexi Slab 1200 X 400 X 140mm £33.22 £39.86 inc. VAT Add to cart Quickview Rockwool Flexi Slab 1200 X 600 X 100mm £51.87 £62.24 inc. VAT Add to cart Quickview Rockwool Flexi Slab 1200 X 600 X 140mm £48.38 £58.06 inc. VAT Out of stock Rockwool Flexi Slab 1200 X 600 X 70mm £54.17 £65.00 inc. VAT Out of stock Rockwool Flexi Slab 1200 X 600 X 90mm £45.47 £54.56 inc. VAT Out of stock