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Depends on the value of the building and your reasons and intentions. If it's a high value building, say a commercial or residential structure, with a long life span wanted, I'd use a SBS modified bituminous roofing membrane. It will seal the rood for 20+ years if applied correctly. For a lower value roof, say over a garage or storage shed then there are several hot applied roofing coatings available. Any competent roofing company can advise you. The exact one will depend on the original roofing material (a cutback or an emulsion). If the roof has had leaks in the past and the insulation is wet you have to be careful not to trap moisture inside the roof or you will have some long term problems. In any case this is not do it yourself job. There are some special equipment and techniques required because working at heights and with extremely hot flammable and sticky liquids requires some training and safety techniques to be done safely.
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How is a built up roof made?
Roofing composed of 3-5 layers of asphalt felt laminated with coal tar, pitch, or asphalt; top is finished with crushed slag or gravel; generally used on flat or low-pitched roofs.
something black and gooey for fixing roads?
tar
Can you buy roofing tar at Home Depot?
Modifed biluman illinois flat roof
What is asphalt pavement?
Asphalt (petroleum tar) mixed with gravel.
What is difference between road tar and asphalt?
Road tar is made from coal. Asphalt is a heavy fraction of petroleum.
How do you install a sloped roof over an extisting flat roof?
You cut rafters, brace them as needed depending on the span and shingle it. I put one on a friend of mines. I cut the outside ends of the rafters at an angle so that I didn't need to change the fascia. Lay a 2x6 flat on the existing roof to run the braces down to. Your roof may not be flat but have a slope one way on it so you will have to take that into consideration for the peaked roof. He had a slightly sloped roof with tar and gravel on it and at the time I was able to put a pitched roof on for less than they wanted to re tar the flat one.
roof cleaning services?
form_title=roof cleaning services form_header=10863 Please state the number of stories your house has.*= () One story () Two stories () Three stories or more What type of roofing material do you have?*= [] Tar and gravel (flat) [] Asphalt shingles [] Wood shingles or shakes [] Tile [] Metal [] Other [] Don't know
What is bituminous material?
Asphalt coal tar Tar sands Brown coal
What are asphalt fossils?
Tar is known as Asphalt fossils. Asphalt preserve only hard parts of organisms such as teeth, bones and the outer shells of spiecies. Countless numbers of these fossils are preserved in tar pits.
What is asphalt pitch?
Asphalt pitch is a black substance that is used to repair roads. Asphalt pitch is the liquid form of tar.
Why do people put tar and gravel on roofs?
The rocks (gravel) serve several purposes : # They hold down the tar roof by their weight # They prevent UV damage and erosion of the tar and asphalt paper, and limit debris that can stick to it # They serve as a reflective surface and heat sink for sunlight, which tends to melt the darker tar
How wide is a tar pit?
A tar pit, or more accurately known as an asphalt pit or asphalt lake, is a geological occurrence where subterranean bitumen leaks to the surface, creating a large area of natural asphalt.[1][2]
