HOT/COLD Bitumen Water Proofing

Hot/Cold Bitumen

Cold/Hot Bitumen waterproofing systems are designed to protect residential and commercial buildings, Bitumen (asphalt or coal-tar pitch) is a mixed substance made up of organic liquids that are highly sticky, viscous, and waterproof. These systems are sometimes used to construct roofs, in the form of roofing felt or roll roofing products.

Felt paper is available in several grades, the most common being Type 1- commonly called 15-pound Type-2 commonly called 30-pound. The weight designations originated with organic base felt weighing 15 or 30 pounds per sq. ft. However, modern base felts are made of lighter-weight fiber, so the weight designations, though common colloquially, are no longer literally accurate.

Another basic designation is organic or inorganic. Organic felt paper has a base material made with formerly living materials such as a rage fiber, hessian (burlap). Or cellulose fibers (wood, or jute). Organic felt papers are now considered obsolete, only comprising five percent of the market in 1987. Polyester mat is weaker and less chemically stable than fiberglass but because it is cheap is gaining market share. Polyester mat is primarily used with the more flexible modified-bitumen felt products.

Cold/Hot Bitumen System Layers:

• Oil Base Bitumen Primer will be applied @ 5kg /100 sft.
• 1st coat of Cold/Hot Bitumen (10/20 & 80/100) 12kg/100 sft will be applied on the roof
• Polyester fabric? The hessian cloth will be laid on 1st coat
• 2nd coat of Cold/Hot Bitumen (10/20 & 80/100) 15kg/100sft will be applied to the roof
• Sand sprinkling on 2nd coat

NOTE:-3rd coat of Cold/Hot Bitumen @ 15kg/100 SFT can be added for better result.