View basket “20mm Stone Bulk Bag” has been added to your basket. £53.40 4m X 25m DPM, 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 Bond-It Powdered Cement Dye, 1kg £6.95 Select options 20mm Stone Half Bulk Bag £30.00 Add to basket 6-10mm Stone Half Bulk Bag £30.00 Add to basket Class B Engineering Brick £0.96 Add to basket