Corrosion-Resistant, Water Resistant, Fire Resistant, Thermal Insulation, Termite Resistant
Usage/Application
Residential & Commercial
Cement roofing sheets, also known as fibre cement roofing sheets, are commonly used in construction due to their durability, fire resistance, and weatherproof qualities. Here are typical specifications for cement roofing sheets:
Material Composition
Fiber Cement: A mixture of cement, cellulose fibres, and sometimes additional materials like sand, silica, or fly ash.
Reinforcement: Usually includes synthetic fibres or asbestos-free alternatives.
Dimensions
Length: Typically ranges from 1.5 meters to 3.0 meters (5 feet to 10 feet).
Width: Usually between 0.9 meters and 1.2 meters (3 feet to 4 feet).
Thickness: Common thicknesses are 5 mm, 6 mm, 8 mm, and 10 mm.
Weight
Weight: Varies depending on the thickness and composition but generally ranges from 10 kg to 15 kg per square meter.
Color
Natural: Generally, a greyish color due to the cement.
Painted/Coated: Can come in various colors if painted or coated.
Surface Finish
Smooth: For a sleek look.
Textured: To mimic traditional roofing materials like slate or shingles.
Thermal Conductivity
Low thermal conductivity: Provides good insulation properties.
Fire Resistance
Fire Rating: Typically classified as non-combustible, often achieving a Class A fire rating.
Mechanical Properties
Tensile Strength: Varies with the fiber content but generally high due to fiber reinforcement.
Flexural Strength: Also varies with composition but designed to withstand significant loads.
Installation Specifications
Fastening: Usually installed using screws or nails with appropriate washers to prevent water ingress.
Overlap: Sheets are typically overlapped to prevent water penetration, with overlaps ranging from 150 mm to 200 mm.
Standards
Compliance: Adheres to various international standards such as ISO, ASTM, or EN standards for fibre cement products.
Durability
Lifespan: Generally, lasts 30 to 50 years depending on environmental conditions and maintenance.
Resistance: Resistant to rot, insects, and various weather conditions.
These specifications can vary based on the manufacturer and specific product line. Always refer to the manufacturer's guidelines for precise specifications for your project.
