This standard specifies the requirements for corrugated roofing sheets made from a composite of coir, wood wool, and Portland cement. It covers materials, dimensions, physical properties like strength and water absorption, and the corresponding test methods. These sheets are intended for use as a low-cost roofing material.
Corrugated coir wood wool cement roofing sheets-Specification
Quick Reference Values
Nominal Thickness15 mm
Minimum Average Transverse Strength (550mm span)500 N
Minimum Individual Transverse Strength (550mm span)400 N
Maximum Water Absorption (24h)25 % by weight
Bulk Density Range500 to 700 kg/m³
Pitch of Corrugation146 mm
Practical Notes
These sheets are relatively brittle and must be handled with care during transport and installation to prevent cracking.
Primarily suitable for low-cost housing, animal shelters, and temporary structures; not recommended for large spans or areas with heavy rainfall or wind loads without specific design considerations.
Ensure proper overlaps (at least 15 cm) and fixing methods as specified to maintain weather-tightness.