Shop Hydroblok for Bathrooms

Hydroblok

Discover Hydroblok—Canada’s trusted name in waterproofing and shower systems engineered for extreme durability and fast installation. Designed with high-density extruded polystyrene (XPS) core and reinforced with a waterproof membrane, Hydroblok panels are perfect for building custom showers, steam rooms, and tiled wet areas. Ideal for the Canadian climate, Hydroblok resists moisture, mould, and mildew while offering excellent thermal insulation. Compatible with standard tile adhesives and easy to cut on-site, it’s a contractor favourite for precision and performance. Build smarter, faster, and dryer. Choose Hydroblok—available at Cosmaroma, proudly Canadian-owned and operated since 2005.