Block C350 Bostik CWP Product Description
Block C350 Bostik CWP is a surface-applied crystalline waterproofing material that waterproofs and protects concrete deep within its structure. It consists of Portland cement, specially treated quartz sand, and reactive chemicals. Bostik CWP requires only water for mixing before application. When Bostik CWP is applied to a concrete surface, the reactive chemicals combine with lime and moisture present in the capillaries of the concrete to form an insoluble crystalline structure. These crystals fill the pores and minor shrinkage cracks in the concrete to prevent water penetration while still allowing the concrete to breathe.
Benefits
Becomes an integral part of the concrete, providing strength and durability. Penetrates deeply and seals capillary voids and shrinkage cracks in concrete. Can be applied on both the positive and negative sides. Fully effective against high hydrostatic pressure. Easy to apply, requires less labor, and is cost-effective. Becomes part of the substrate and cannot be easily removed. Can be backfilled without additional protection, such as protective boards, steel mesh, or wire mesh. Suitable for use within a pH range of 3–11. Can be applied to damp or green concrete. Non-toxic and suitable for use with potable water.
Applications
BOSTIK CWP can be applied to all types of structurally sound concrete, whether new or existing. It can be applied to either the positive or negative side of concrete surfaces. Typical application areas include:
Water storage tanks/towers
Reservoirs/dams
Swimming pools
Water treatment facilities
Basements/foundations
Retaining walls/bridges, etc.
