Filters Flooring Accessories Stair Nosings & Profiles 5 Underlay 2 Pipe Collars 2 Scotia & Quadrant Beading Thresholds & Mouldings Brands Duralay Base Material Felt 1Built-In Membrane Yes 1Sound Proofing 24dB Sound Reduction 1Thickness 4.2 mm 1Flooring AccessoriesPopularityPrice - LowestPrice - HighestPopularity183654729018Duralay Timbermate Silentfloor Gold Flooring Underlay, 4.20 Mm