Comparison of Fiber Cement Board & Calcium Silicate Board

Fiber cement board offers superior strength, weather resistance and waterproof performance, widely used for exterior walls and heavy-duty wet applications.

Calcium silicate board features excellent fire resistance, dimensional stability and workability, ideal for interior partitions, ceilings and fire protection systems.

Key Differences

• Raw Materials

  Fiber cement board is mainly made of cement and reinforcing fibers.

  Calcium silicate board is composed of siliceous and calcareous materials with low cement content.

• Physical Properties

  Fiber cement board: higher density, stronger, better water resistance and freeze-thaw resistance.

  Calcium silicate board: lighter, more stable, less deformation, easier to cut and install.

• Fire Performance

  Both are Class A non-combustible building materials.

  Calcium silicate board performs better in high-temperature fire protection.

  Recommended Applications

Fiber Cement Board

Exterior wall cladding, curtain wall backing, bathrooms, kitchens, basements, flooring, roof underlayment, cold and high-humidity areas.

Calcium Silicate Board

Interior partitions, ceilings, firewalls, fire ducts, public buildings, projects requiring low deformation.

Quick Selection

• Exterior walls, wet areas, high strength → Fiber Cement Board

• Interior use, fire protection, easy construction → Calcium Silicate Board