Roofing Felt

What is roofing felt paper?

Sometimes called roofing felt underlayment, roofing tar paper, or roll roofing, this is a layer of protection installed between the roof deck and the roofing shingles. Roofing felt is comprised of a base, made from natural materials (such as wood cellulose) or synthetic ones (such as fiberglass or polyester), and then coated or saturated with a protective coating such as bitumen (asphalt), which repels water but still allows the product to breathe.