We excel in delivering high-quality OEM and ODM solutions for our partners,

enabled by cutting-edge technology and scalable manufacturing expertise.

Through scientific material combinations and process designs, it can effectively block rainwater penetration and enhance the durability and stability of the wall, creating a robust waterproof barrier for building exteriors. It is widely used in various civil and industrial buildings.The exterior wall waterproof backer board has a special structure and coating that can effectively prevent water penetration, and can effectively block the transfer of heat and reduce indoor temperature fluctuations. Compared with traditional cement boards, it has the characteristics of high strength, durability, and not easy to deform or crack.

The three-layer structure of the exterior wall waterproof backer board each undertakes different functions, forming a complete "protection-support-fitting" system. While ensuring long-term waterproofing, it can adapt to various complex environmental requirements.

Waterproof Core Layer

The waterproof core layer of the exterior wall waterproof backer board mostly uses high - density polyethylene (HDPE) or ethylene - propylene - diene monomer (EPDM). HDPE materials have excellent impermeability, with a dense molecular structure that can effectively block the intrusion of liquid water. EPDM, on the other hand, has good weather resistance and elasticity, maintaining stable waterproof performance in different temperature environments. Some high - end products also add nanoscale waterproof materials to the core layer to further enhance waterproof performance, enabling them to withstand heavy rainfall and long - term humid environments.

Reinforced Support Layer

To ensure the strength and stability of the backboard, the reinforced support layer usually selects glass fiber - reinforced cement boards (GRC) or fiber - cement pressure boards (FC). These materials have high compressive and flexural strengths, capable of bearing the weight of exterior wall finishing materials and the impact of external wind pressure, preventing deformation and cracking of the backboard during use. They also enhance the connection firmness between the backboard and the wall base.

Protective and Decorative Layer

The protective and decorative layer is the outermost layer of the exterior wall waterproof backer board, mainly serving to protect the internal structure and beautify the appearance. Common protective and decorative layers include acrylic coatings, fluorocarbon coatings, etc. Acrylic coatings have good weather resistance and color retention, effectively preventing damage to the backboard from ultraviolet rays and extending the product's service life. Fluorocarbon coatings, meanwhile, have excellent weather resistance, corrosion resistance, and self - cleaning properties, keeping the exterior wall clean and beautiful for a long time and reducing long - term maintenance costs.

The installation process for exterior wall waterproof backer board is also crucial. Different construction environments require different approaches. Below, we'll explain the following:

Concrete and brick exterior wall construction

First, level the base wall surface with cement mortar. Next, install the exterior wall waterproof backer board using staggered horizontal joints. Importantly, use either thin-ply cement mortar or dry-ply. Both methods require anchors for reinforcement to prevent dislodging. Finally, apply fiber mesh tape to the joints between panels and apply a layer of crack-resistant thinset mortar or specialized sealant.

Lightweight steel or wooden stud exterior wall construction

Install directly onto the lightweight steel or wooden studs and secure with anchors. Apply sealant to the joints between panels, apply fiber mesh tape, smooth the sealant, and completely cover the fiber mesh tape and anchors. During construction, apply various finishing methods, such as thin-ply tile, paint, or stone varnish.