Tar paper also know as roof felt is a heavy paper impregnated with tar which makes it waterproof.
Flat roof tar paper.
Many home builders use roof tar when constructing a flat roofed house.
United roofing gator skin synthetic roof underlayment 42 in x 285 8 ft 1 000 sq ft synthetic roof underlayment.
Built up roof bur the traditional hot tar and gravel roof is built from three or more plies of waterproof material alternated with hot tar and ballasted by a layer of smooth river stone.
Tar paper is considered an underlayment it goes under a more durable roofing material.
Traditionally most flat roofs in the western world make use of tar or asphalt more usually felt paper applied over roof decking to keep a building watertight.
The felt paper is in turn covered with a flood coat of bitumen asphalt or tar and then gravel to keep the sun s heat uv rays and weather off it and helps protect it from cracking or.
How to install roofing tar paper.
Whether you re building a new house or putting a new roof on your existing house installing tar paper first helps waterproof the roof and prevent leaks.
Flat roofs usually come with a 10 to 20 year warranty but can last 25 years if you build the roofs right and maintain them using commonsense rules.