Material Used For A Roof.

• The materials used in a roof must keep the moisture out to prevent corrosion on the roof and prevent internal damage.
• The materials used must support snow fall, resist heavy wind pressure, wind uplift, external axial force, and seismic resistance.
• The materials used should give good pleasant, satisfactory appearance so as to provide a full fledge control over the design to the builder.
• The materials selected should have a preventive insulation against noise and heat transmission to provide a overall comfort zone.