Waterproof Rear Substrate Panel

This panel features a composite, one-piece structure with high-density extruded polystyrene (XPS) board as the core material, reinforced with alkali-resistant fiber layers on both sides, and coated with a self-developed nano-quartz protective coating. It's prefabricated at the factory, eliminating the need for on-site bonding. In actual testing, its waterproof and moisture-proof capabilities are its biggest highlight. After 96 hours of immersion in water, the water absorption rate remained below 1%. Combined with the surface sealing coating, moisture has difficulty penetrating the panel. Even in high-humidity environments like shower rooms and basement storage rooms, it effectively prevents moisture from invading the walls, inhibiting mold growth at the source and keeping the base layer dry for longer.

Many people worry about the insufficient strength of lightweight panels, but this Waterproof rear substrate panel completely eliminates these concerns. The panel boasts an average bending strength of 3900 kPa, offering excellent load-bearing and impact resistance, and will not dent or deform under normal use. The surface coating is highly compatible with various tile adhesives and bonding mortars, achieving a tensile bonding strength of 0.4 MPa, ensuring a strong bond for tiles, slabs, and stone. Simultaneously, the panel provides inherent stress cushioning, isolating the tensile force generated by minor wall deformation, minimizing the risk of cracking and peeling, and significantly extending the lifespan of the finished product.

Its added advantages in terms of living comfort are also significant. The substrate has a low thermal conductivity of 0.034 W/(m・K), providing considerable insulation, stabilizing indoor temperature, and reducing energy consumption for air conditioning and heating equipment. The standard 12mm panel offers a sound insulation value of up to 23 dB, significantly reducing noise transmission when used in mezzanines, pipe enclosures, and interior partitions. Safety is also paramount; the board meets B1 flame retardant standards, slowing the spread of fire in open flame environments, and its formaldehyde emission is far below industry limits, making it safe for use in residential areas, hospitals, schools, and other places with high environmental protection requirements.

The ease of on-site installation is another reason for its popularity. The board has a uniform texture, producing almost no dust during cutting, resulting in a cleaner working environment. This Waterproof rear substrate panel integrates leveling, waterproofing, insulation, and soundproofing functions, eliminating the need for tedious steps such as mesh reinforcement, multiple layers of plastering, and repeated waterproofing applications, effectively shortening the construction period and saving labor costs. The board exhibits strong dimensional stability and extremely low deformation rate under high temperature and humidity conditions, eliminating the need for expansion joints during installation and placing no special requirements on the temperature and humidity of the construction site. The brand offers various thicknesses to suit different scenarios: 6mm is suitable for wardrobe moisture protection and simple tile bases; 12mm is suitable for kitchen and bathroom walls and regular light steel framing; 20mm can handle uneven walls and can also be used for pipe covering; 30-40mm is mainly for roofing and exterior wall insulation; and the 50mm thicker version can even be used directly as an independent partition wall.

Whether it's whole-house renovation, kitchen and bathroom shower system construction, commercial projects, steel structure buildings, ventilation duct construction, or engineering no-removal formwork applications, this backing panel is suitable. From small-area home renovations to large-scale construction projects, it consistently performs well and replaces many traditional base materials.

If you are currently selecting a Waterproof rear substrate panel or would like to learn about the specifications and construction details for different scenarios, please feel free to contact us. We will provide corresponding reference solutions based on your actual needs.