Mapei Planiseal 88 – Cementitious Waterproofing Mortar

Mapei Planiseal 88 is a high-performance cementitious waterproofing mortar designed to stop water penetration in concrete, brick, blockwork, and masonry. Whether you’re dealing with leaking retaining walls, damp basements, seepage through concrete tanks, or negative-side waterproofing, this product is engineered to create a durable, long-term barrier against moisture and hydrostatic pressure. Once mixed and applied, Planiseal 88 forms a dense, high-bond waterproof coating that protects structures exposed to constant dampness or direct water pressure. It can be brushed or trowelled on, making it ideal for tradies, maintenance teams, and renovators who need a reliable, easy-to-use waterproofing solution for underground and external masonry surfaces. Perfect for restoring failing waterproofing, sealing old concrete tanks, protecting planter boxes, and reinforcing structural walls against moisture, Planiseal 88 delivers proven performance backed by Mapei’s global reputation for durability and technical excellence.