View basket “20mm Ballast Half 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 20mm Ballast Mini Bag £3.50 Add to basket Bond-It Liquid Mortar Plasticiser £5.90 Read more 6-10mm Stone Half Bulk Bag £30.00 Add to basket 100mm Thermalite Shield / Celcon Blocks £2.85 Add to basket