What protections are needed to use block board in humid environments

Block Board, also known as wooden board or large core board, is often made of solid wood strips as core material, covered with veneer or plywood on both sides and hot pressed. This type of board has the advantages of strong nail grip, good bending resistance and light weight, and is widely used in furniture manufacturing and interior decoration. However, since the core material is solid wood strips, it is significantly affected by humidity and is prone to expansion, deformation, cracking and mildew when encountering humid environments. Therefore, effective protective measures must be taken in humid environments.

Moisture-proof treatment during the board selection stage
When using Block Board in humid environments, you should first select qualified products from the source. High-quality boards should have a moisture content between 8% and 12%, and the internal core strips should be closely arranged to avoid gaps or uneven splicing. The panel material should be made of fine texture, moderate hardness and firm glue, and try to choose products that meet E0 or E1 environmental standards to reduce the risk of glue decomposition in high humidity environments.

Moisture-proof treatment of surface coating process
In humid environments, the Block Board surface must be effectively enclosed. Common protection methods include:
Paint coating: Spray polyurethane paint or water-based wood paint evenly on the surface of the board to form a water-resistant film.
Melamine veneer: Use decorative paper impregnated with melamine resin to press and paste on the surface to improve moisture resistance and wear resistance.
PVC coating: Cover the PVC film by vacuum blister or veneer process to avoid moisture penetration into the core material.
Surface finishing can not only block air and moisture, but also improve appearance and enhance durability.

Moisture-proof treatment of edges and interfaces
The edges and interfaces of the Block Board are the easiest places to absorb moisture. For exposed cutouts, edge strips, edge paint or hot melt edge glue must be treated. Commonly used edge sealing materials include PVC edge sealing strips, solid wood edge sealing strips and ABS edge sealing strips. The edge-sealed interface prevents water vapor from penetrating in the direction of wood fibers, thereby reducing expansion and layering. In furniture production, the screws are fixed, and waterproof glue or wood wax oil can be applied to the hole wall before construction to improve the moisture-proof performance of the hole parts.

Moisture-proof treatment for adhesive selection
In humid environments, the glue quality of Block Board is particularly critical. During production or secondary processing, urea-formaldehyde resin modified glue, phenolic resin glue or polyurethane glue with strong water resistance should be selected. This type of adhesive can maintain good stability under high humidity conditions and avoid degumming, bubbling and cracking caused by moisture invasion. For places where long-term exposure to high humidity environments is required, WBP glued grade sheets can be considered.

Environmental moisture-proof measures in use scenarios
When using Block Board in humid environments, in addition to the board itself, further protection is required in combination with actual scenarios:
Kitchen and bathroom: When installing, avoid direct contact between the floor or water source. Moisture-proof pads or stainless steel support feet can be installed at the bottom of the cabinet.
Basement and wall furniture: There should be a certain ventilation gap between the furniture back panel and the wall to avoid mold in the sheet due to the infiltration of condensate water.
Coastal and high-humidity areas: It is recommended to use it in conjunction with dehumidifiers and ventilation systems to keep the indoor humidity between 40% and 60% and extend the service life of the board.

Moisture-proof treatment for regular maintenance
Even if it is moisture-proof, the Block Board still needs regular maintenance in humid environments. During daily cleaning, large amounts of moisture should be avoided from touching the surface of the board, and it is recommended to wipe it with a semi-dry rag. Regularly check whether the edge seal strips are loose and whether the surface coating is worn, and repair or re-paint in time to maintain the integrity of the moisture-proof layer. For areas with slight cracks or bulging, fill glue or partial replacement should be immediately treated to avoid further aggravation of the problem.