Primeseal is more than a primer and more than a sealer. In fact, it is the ultimate in both roles. As a primer for membranes, it provides an exceptional bond coat for almost all porous substrates. It is also a great sealer and waterproofing coating in its own right where flexibility is not required. It is suitable for use on most substrates including concrete, cementitious screeds, timber, fibre cement sheeting, plaster board, timber and bitumen. Although predominantly it is used as an adjunction with other coatings this is a product that is so good it should be recognised in its own right.