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| Asphalt Felt | An asphalt-saturated and/or an asphalt-coated felt membrane. (See also Felt.) |
| Coal Tar Felt | A roofing membrane saturated with refined coal tar. |
| Coated Felt | An asphalt-saturated ply sheet that has also been coated on both sides with harder, more viscous asphalt. |
| Felt | A roofing sheet made of interwoven fibers. The fibers can be wood or vegetable for Organic Felts, glass fibers for fiberglass felts, polyester, or asbestos. |
| Felt Machine | A machine that will install bitumen and felt at the same time. |
| Glass Felt | (1)In the manufacturing of roofing materials - a sheet comprised of bonded glass fibers prior to being saturated with bitumen; <BR><BR>(2) short for asphalt or coal tar saturated fiberglass felt membrane. |
| Organic Felt | An asphalt roofing base material manufactured from cellulose fibers. |
| Saturated Felt | Felt that has been saturated with bitumen. |