Asbestos Bitumen Roofing Felt

As long as the asbestos remained sealed beneath the asphalt the roof felt was not dangerous for those who worked lived or played inside the buildings.

Asbestos bitumen roofing felt.

Shingles weren t the only roof product containing asbestos materials. Bituminous waterproofing systems are designed to protect residential and commercial buildings bitumen asphalt or coal tar pitch is a mixed substance made up of organic liquids that are highly sticky viscous and waterproof. Construction workers used asbestos felt as an underlayment for shingles and it was also sometimes the main material used in built up roofs. Roofing felt and underlayment.

Asbestos can also be found in spray coatings lagging and insulation boards cement panels floor tiles and bitumen felt mastics sealants putties and adhesives textured coatings and paints yarns etc. Roofing tar and asphalt liquids. These roof mats were widely used in built up roofs in the us epa 1990c. The primary applications for asbestos felt included.

The felt was made up of sheets of asbestos material that was then covered with asphalt. But the workers who installed the felt were very likely exposed to the dangerous asbestos fibers. Also referred to as asbestos roof mat it is a component that is impregnated in asphalt that was used as an insulating and waterproofing material between roof boards and shingles johns manville no date. Information about health and safety at work.

I had a look at the old felt we had removed and it s a black tar type felt with what looks like stands of hessian in a criss cross pattern and some sort of paper on the back. How dangerous is this. Hi did any old bitumen roofing felts used in residential pitched roofs contain asbestos. Asbestos fibers found their way into these roofing products.

Asbestos roofing felt being cut. 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. Work on any type of asbestos can be dangerous. It was a universal solution to roof concerns.

Work on roofing felt would not normally be notifiable provided that the material is in good condition. These systems are sometimes used to construct roofs in the form of roofing felt or roll roofing products. In fact most other roofing products produced in the early to mid twentieth century contained asbestos. Asbestos felt was often laid under linoleum vinyl and asphalt floor tiles for padding and insulation.