Views: 0 Author: Site Editor Publish Time: 2025-03-07 Origin: Site
Cement boards that have become damp and moldy need to be dealt with in a timely manner, otherwise the mold may spread and affect health or structural safety. The following is a step-by-step solution:
1. Safety protection
Wear protective equipment: gloves, mask (recommended N95), goggles to avoid inhaling fungal spores or skin contact.
Ventilation environment: Open windows or use fans to accelerate air circulation and reduce indoor humidity.
2. Clean up mold
Mild mold (with a small amount of mold spots on the surface)
White vinegar/baking soda solution:
Mix white vinegar and water (1:1) or baking soda and water (1 tablespoon to 500ml), spray on the moldy area, let it stand for 10 minutes, and then scrub.
Commercial antifungal agents:
Choose chlorine bleach (such as disinfectant, diluted 1:10 with water), spray and let it stand for 15 minutes, then scrub with a hard bristled brush (note that bleach may cause the cement board to fade).
Severe mold growth (large area or internal penetration)
Remove the damaged layer:
If mold penetrates into the interior of the cement board, use a scraper to remove the moldy surface until a clean substrate is exposed.
Professional handling:
If the area is too large or the structure is damaged (such as bubbling or peeling), it is recommended to contact a professional team for handling.
3. Thoroughly dry
Natural drying:
After cleaning, ventilate and air dry. If necessary, use a dehumidifier or electric fan to accelerate drying.
Check the source of moisture:
Check for water leakage points (such as pipes or roof seepage) or environmental moisture causes (such as basement moisture regain), repair them, and then treat the surface.
4. Anti mold and waterproof treatment
Applying waterproof coating:
After drying, apply cement specific waterproofing agent or anti mold primer (such as epoxy resin) to enhance impermeability.
Surface coverage:
It can be tiled, coated with anti mold paint, or installed with waterproof decorative panels to isolate moisture.
5. Preventive measures
Control humidity:
Keep the environment dry (humidity ≤ 60%) and use a dehumidifier or air conditioner for dehumidification.
Regular inspection:
Regularly inspect areas that are prone to moisture (such as bathrooms and kitchens) and promptly address any mold spots found.
Improve ventilation:
Install exhaust fans or fresh air systems, especially in enclosed spaces.
precautions
Avoid rinsing moldy areas directly with water, as it may cause moisture to seep deeper.
Bleach may corrode metal parts and should be thoroughly rinsed after use.
If the cement board has severe pulverization and cracking, it is necessary to consider replacing some of the boards.
Tip: If you are unsure about the operation or if the problem repeatedly occurs, it is recommended to consult a professional waterproof and anti mold company to ensure long-term solutions to hidden dangers.
