Cementitious Membrane

Cementitious membranes are rigid or flexible waterproof coatings made by blending Portland cement, silica sand, and water-reactive polymers. When applied to masonry or concrete structures, they penetrate the pores to chemically bond with the substrate, creating a durable, seamless barrier against hydrostatic water pressure.

These membranes are highly favored for their cost-effectiveness and exceptional bond strength. Because they can withstand both positive and negative water pressure, they are widely used in areas prone to moisture, such as basements, retaining walls, swimming pools, and internal wet areas. While traditional cementitious coatings are rigid, many modern formulations incorporate polymers to add flexibility, allowing the membrane to accommodate minor structural movements without cracking