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 £30.70 £36.84 inc. VAT Add to cart Quickview Knauf Rocksilk Flexi Slab 1200 X 600 X 90mm £32.85 £39.42 inc. VAT Add to cart Quickview Knauf Rocksilk Flexi Slab 1200 X 600 X 70mm £32.77 £39.32 inc. VAT Add to cart Quickview Rockwool Flexi Slab 1200 X 400 X 100mm £34.93 £41.92 inc. VAT Add to cart Quickview Rockwool Flexi Slab 1200 X 400 X 140mm £31.94 £38.33 inc. VAT Add to cart Quickview Rockwool Flexi Slab 1200 X 600 X 100mm £49.87 £59.84 inc. VAT Add to cart Quickview Rockwool Flexi Slab 1200 X 600 X 140mm £46.51 £55.81 inc. VAT Out of stock Rockwool Flexi Slab 1200 X 600 X 70mm £52.08 £62.50 inc. VAT Out of stock Rockwool Flexi Slab 1200 X 600 X 90mm £43.72 £52.46 inc. VAT Out of stock