A layer of gravel or small stones is applied on top of the final coating of asphalt to protect the roof from the elements including ultraviolet uv rays and hail.
Roofing felt gravel.
Of all the flat roofing options a tar and gravel roof is the most economical.
It provides excellent protection against uv rays and is an attractive option for windows and decks that overlook the roof.
Here alternating layers of roofing felt usually fiberglass and hot applied asphalt are combined to create a long lasting roof system.
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The standard roofing for this situation is built up from layers of hot tar and thick roofing felt and topped with a layer of gravel.
This video walks through the very basic steps for installing tarpaper felt.
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This is called built up roofing.
It also offers fire resistance required for home construction.
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Built up roofs or burs also called a tar and gravel roof is a well established and popular style of flat roof that is made up of alternating layers of roofing felt or fiberglass and asphalt that is applied with heat which combine to make a long lasting sturdy roofing system.
Ikopro solvent free water proofer is an easy to use bitumen based emulsion for roofs.
Roofing felt also known as tar paper provides a protective underlayment over the roof deck and beneath the shingles.
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Though a tar and gravel roof was once made from tar paper today this type of roofing is made from more advanced materials such as fiberglass membranes.
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Starting a roof with tarpaper felt.
Advantages of a tar and gravel roof.
Zinc roofing 1 6 lb m ft 2 7 8 kg m 2 copper asphalt composite shingle 4 2 lb m ft 2 20 5 kg m 2 asphalt roll roofing 1 1 lb m ft 2 5 4 kg m 2 felt tar and gravel roofing 3 ply 4 8 lb m ft 2 23 4 kg m 2 felt tar and gravel roofing 4 ply 5 3 lb m ft 2 25 9 kg m 2 felt tar and gravel roofing 5 ply 6 1 lb m ft 2 29.
Setting the roll and then nailing off.