Is There Asbestos In Roofing Felt

Asbestos fibers found their way into these roofing products.

Is there asbestos in roofing felt.

Products containing asbestos ended up in these structures in the form of products like floor tiles or roofing felt. As a rule intact felt is considered pretty safe as the asbestos is firmly embedded in bitumen so the dust issue does not arise unless the edges are badly weathered even then the quantity to be released is pretty small more dangerous if burnt though. 15 1991 pdf 3 pp 80 k letter to j. However during extensive sampling of material from re roof projects with tear offs the occurrence rate of find asbestos is less than 1.

Roofing cement and cement based shingles. Any asbestos containing material like roofing felt was a hazard for the workers who installed it. Roof flat sheets and corrugated asbestos roofing. Most of the times asbestos roofing materials are not dangerous if not damaged and left undisturbed.

Roofing felt was usually installed on the flat roofs found on commercial buildings and other buildings like schools and institutions. The only way to know for sure whether your roof contains asbestos is to have a sample tested by professionals in a certified laboratory. Asphalt shingles yes roofing manufactures have admitted to using trace amounts of asbestos in the fiber mat from around 1964 1976. Rueckert re asbestos neshap apr.

Asbestos flooring felt is one of the few asbestos products completely banned in the u s and regulations now require other products to contain less than one percent asbestos. They would not warp or rot and were resistant to damage caused by insects. Asbestos was used in the roofing felt because of its stability and rot proofing capabilities. Manufactured from a mix of asbestos fibers and hydraulic cement asbestos cement roof shingles were rigid durable and fireproof.

Roofing caulking mastic and sealant. It also allowed a slight movement of the felt to accommodate expansion contraction movements of the building structures without cracking the felt. Roof flashings and vents. Work on roofing felt would not normally be notifiable provided that the material is in good condition.

The result of the test will lead you to the next step. In fact most other roofing products produced in the early to mid twentieth century contained asbestos. Moran re applicability of the asbestos neshap to asbestos roofing dec. 12 1990 pdf 3 pp 36 k letter to d.

It was a universal solution to roof concerns. Cropp re sawing asbestos roofing felt jun. Dufour re applicability of the asbestos neshap to asbestos. Old exterior roofing felt on flat roofs or sheds is also a possibility.

Roofing felt and underlayment. Roofing tar and asphalt liquids.