Peel seal instant waterproof repairs 3 ft w x 33 5 ft l 100 5 sq ft aluminum roll roofing.
Peel and stick double roof.
Above that is an incomplete double coverage layer of 15 pound roofing felt.
Using peel and stick underlayment makes a better roof.
The only way to improve the quality of the underlayment was to make it thicker or add another layer.
Until recently all shingle roofs had the same type of underlayment.
I ve marked in red the lower edge of each course of roofing felt.
Gaf weatherwatch 200 sq.
Gaf self adhering base sheet for low slope roofing is suitable for primed plywood deck and many other substrates.
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Gaf liberty 3 ft.
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Gcp applied technologies grace ice and water shield ht.
My photo of an asphalt roof installation in process shows that the contractor has installed a peel and stick waterproof ice and water shield type product along the roof eaves in a 36 wide strip.
Ft sbs self adhering base sheet roll for low slope roofing 3733000 the home depot.
They all used rolled asphalt felt material commonly referred to as tar paper.