GTDsupply Lightweight Vapor-resistant Waterproof Cementitious XPS Foam Board with Fiberglass Mesh , 32" x 48" x 1/2" for Shower Wall & Floor Cover, 5 Pcs Pack (GTDSUPPLY-BOARD-5)

Product Features:

• High-density XPS foam core with cementitious coating for superior compression strength and tile bond
• Reinforced with alkali-resistant fiberglass mesh on both sides for crack prevention and durability
• 100% waterproof and vapor-resistant—ideal for wet areas such as showers, steam rooms, and bathrooms
• Lightweight and easy to handle, cut, and install using standard utility knives or power tools
• Suitable for use on walls, floors, ceilings, countertops, and custom-built benches or niches
• Compatible with most tile adhesives, modified thin-set mortars, and waterproofing systems
• Provides thermal insulation and acts as an effective vapor barrier behind tile assemblies
• Mold and mildew resistant for healthier indoor air quality in humid environments
• Replaces traditional cement board while reducing installation time and substrate weight
• Dimensions: 32" x 48" x 1/2" – perfect for standard shower wall and floor coverage
• Trusted by professional tilers, bathroom remodelers, and waterproofing contractors

Product Description:

The GTDsupply Lightweight Vapor-Resistant Cementitious XPS Foam Board (32" x 48" x 1/2") is a premium building panel designed for modern wet room construction, tile-ready shower wall installations, and waterproof floor underlayment. Engineered from high-density extruded polystyrene (XPS), each board is coated with a durable cementitious layer reinforced with alkali-resistant fiberglass mesh, offering superior strength, stability, and waterproofing performance. Ideal for both residential and commercial bathrooms, this board is fully vapor-retardant and mold-resistant, ensuring long-lasting protection behind tiles in high-moisture environments such as walk-in showers, steam rooms, bathtub surrounds, and spa walls.

Lightweight and easy to cut, it simplifies installation and significantly reduces labor time compared to traditional cement boards. This waterproof panel is compatible with modified thin-set mortars and works seamlessly with ceramic, porcelain, natural stone, or glass tiles. Whether used as a shower backer board or floor underlayment, the GTDsupply XPS foam board delivers dependable support, dimensional stability, and moisture resistance, making it a trusted choice for tile contractors, DIY renovators, and professional installers.