1、 Product Overview Waterproof backing board is a specialized substrate for wall partitions and tiling, developed specifically for long-term humid areas such as bathrooms, kitchens, basements, and shower rooms. It is made of high-density XPS extruded core material combined with alkali resistant fiberglass mesh cloth, and integrates five core functions: waterproof and moisture-proof, sound insulation and noise reduction, thermal insulation, mold and corrosion resistance, and crack resistant tiling. It replaces traditional cement boards, red bricks, and gypsum boards, and solves decoration problems such as wall moisture regain, mold growth, hollowing, condensation, water seepage, and noise penetration from the root. It can be used for home decoration in wet areas, hotel fixtures, and underground space renovation. 2、 Core materials and processes Core layer: high-density closed cell XPS extruded board Internally independent closed honeycomb structure, with a closed cell rate of ≥ 98% and a water absorption rate of almost 0, completely blocking the infiltration of groundwater and wall condensation water; The thermal conductivity is extremely low, and it has a built-in insulation effect. The basement can isolate underground air conditioning, and the bathroom can isolate hot water temperature difference condensation, preventing wall water from flowing back into the water. The material of the board is solid, resistant to compression without deformation, and does not shrink or collapse after long-term use. Surface layer: double-sided alkali resistant glass fiber mesh fabric+special waterproof mortar coating Double sided composite high grammage alkali resistant fiberglass mesh, resistant to tension, impact, and cracking. The surface waterproof mortar layer has strong adhesion with tile adhesive and cement mortar, and the tiling is not easy to fall off or hollow; Resistant to acid and alkali corrosion, it will not pulverize, rot, or mold in bathroom baths with acidic and alkaline water vapor, or in damp soil environments in basements. Integrated hot pressing composite process The core material and fiberglass coating are high-temperature pressed and fused without layering or peeling. The cutting, slotting, and drilling construction are convenient, and there is no need for additional waterproof base, completing the moisture-proof base layer of the wall in one step. 3、 Five core product advantages 1. Strong waterproof and moisture-proof, preventing moisture and mold from returning The board itself does not absorb water, blocking underground moisture, wall seepage, and shower condensate infiltration, and isolating the environment for mold growth; Compared to ordinary cement boards that are prone to water absorption and mold growth, gypsum boards tend to pulverize when exposed to water. However, this board has no mold growth, peeling, or blackening issues when exposed to high humidity for a long time. It is the preferred choice for basement and first floor damp apartments. 2. Sound insulation and noise reduction, reducing the transmission of spatial noise The high-density closed cell structure comes with sound insulation and damping effects, which can be used for bathroom partitions and partition walls. It can block flushing noise, shower water flow noise, and indoor living noise, improving the quietness of living. The advantages of hotel, apartment, and duplex basement renovation are outstanding. 3. Thermal insulation to eliminate wall condensation and dripping water Excellent thermal insulation performance, isolating outdoor high temperatures in summer and blocking wall air conditioning in winter, avoiding wall condensation caused by temperature differences between hot and cold; The use of basements can alleviate coldness and humidity, while the use of kitchens and bathrooms can reduce wall water flow and tile fogging. 4. The tiling is firm and does not crack, making construction worry free The double-sided fiberglass reinforced layer has sufficient friction, and the tile adhesive is directly applied without the need for wall leveling or separate waterproofing; The board has strong toughness, minimal thermal expansion and contraction deformation, and prevents ceramic tiles from cracking, hollowing, and falling off; It can be directly cut to make shower water blocking, dry and wet partitions, and wall base layers, simplifying the construction process and shortening the construction period. 5. Lightweight and easy to install, suitable for various scenarios The weight is much lighter than cement bricks and red bricks, reducing the load-bearing capacity of building walls; It can be cut, slotted, and bent to create curved partitions. There are two construction methods: dry hanging and wet pasting, which can be operated by novice bricklayers to reduce labor construction costs. 4、 Applicable scenarios Home decoration scenes: bathroom dry and wet area partition, shower area wall, kitchen wall, first floor damp wall, basement whole house wall, balcony laundry area; Fixture engineering: hotel apartment bathroom partition wall, commercial catering kitchen, swimming pool changing room, underground garage storage room, villa basement basement moisture-proof wall; Special construction: shower base base layer, dry wet separation partition wall, sunken bathroom backfill surface layer, external wall moisture-proof base layer. 5、 Construction Brief Explanation After leveling the base wall, fix the backing board directly with cement mortar or structural adhesive; The splicing gap of the board is sealed with matching waterproof mesh tape and waterproof mortar; After drying, apply tile adhesive directly to lay tiles without the need for additional waterproof coating; The openings of doors, windows, and pipelines can be sealed with glue to further enhance the waterproof effect. 6、 Applicable procurement population Home decoration companies, tile construction teams, whole house customization stores, hotel decoration contractors, basement renovation project vendors, building materials wholesale distributors, foreign trade building substrate purchasers, support bulk engineering orders and full box spot supply, and can customize regular size boards according to demand.