Calcium silicate board, renowned for its fire resistance, moisture resistance, and durability, is a preferred material for interior walls, ceilings, and exterior cladding. Proper installation ensures its longevity and performance.
Before installation, gather tools like a measuring tape, level, circular saw, screw gun, and calcium silicate board adhesive. Ensure the substrate (wood or metal frame) is clean, level, and free of debris. For exterior projects, apply a moisture barrier to prevent water infiltration.
Measure the installation area accurately. Use a carbide-tipped blade to cut boards to size, avoiding rough edges. For curved surfaces, score the board lightly with a utility knife and bend gently.
Apply a high-quality adhesive (e.g., modified acrylic or polyurethane) in a zigzag pattern across the board. Press firmly onto the substrate, leaving a 2mm gap between boards for expansion. Use screws at 300mm intervals for added stability.
Seal joints with elastomeric sealant or fiberglass mesh tape embedded in joint compound. This step is critical for fire-rated installations or high-humidity areas like bathrooms and kitchens.
After 24 hours of curing, sand edges lightly with 120-grit sandpaper. Prime with an acrylic-based primer before applying paint or texture. For exterior walls, use weather-resistant coatings to enhance UV protection.
Clean with a damp cloth and mild detergent. Avoid abrasive cleaners. Inspect annually for cracks or sealant degradation, especially in high-traffic or wet areas.