View basket “20mm Ballast Half Bulk Bag” has been added to your basket. £15.00 4m X 3m DPM Handipack, 300mu quantity Add to basket Category: Building Materials Description Description Damp-proof membrane (DPM) is a versatile product and can also be used for a wide range of applications; but commonly used to protect a building’s concrete slab from moisture rising from the foundations. Related products 20mm Stone Bulk Bag £48.00 Add to basket 100mm X 30m DPC £5.20 Add to basket 50mm PIR Insulation Board £40.00 Add to basket 20mm Ballast Half Bulk Bag £28.00 Add to basket