View basket “20mm Ballast Bulk Bag” has been added to your basket. £5.20 100mm X 30m DPC quantity Add to basket Categories: Bricks & Blocks, Building Materials Description Description Damp-proof course (DPC) offers a protective barrier; and is used within the inner layers of brick or block walls to protect buildings from rising damp. Related products 10mm Stone Mini Bag £3.50 Add to basket 300mm X 30m DPC £12.60 Add to basket Line Marker Spray – 750ml £7.99 Select options 6-10mm Stone Half Bulk Bag £30.00 Add to basket