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Installation Method of Calcium Silicate Board: A Step-by-Step Guide for Optimal Results

Release Time: 2025-06-06
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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. 

1. Preparation: Key to a Flawless Finish

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.

2. Measuring and Cutting: Precision Matters

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.

3. Adhesive Application: Bonding for Strength

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.

4. Sealing Joints: Preventing Moisture and Cracks

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.

5. Finishing Touches: Sanding and Painting

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.

6. Maintenance: Ensuring Longevity

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.

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