Various guides go into detail about other asbestos locations.
Asbestos bitumen roofing felt.
Work on any type of asbestos can be dangerous.
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.
Asbestos roofing felt being cut.
It was a universal solution to roof concerns.
These systems are sometimes used to construct roofs in the form of roofing felt or roll roofing products.
However tasks on these particular materials can be carried out by non licensed workers who are appropriately trained.
Work on roofing felt would not normally be notifiable provided that the material is in good condition.
Roofing tar and asphalt liquids.
The felt was made up of sheets of asbestos material that was then covered with asphalt.
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.
Asbestos felt was often laid under linoleum vinyl and asphalt floor tiles for padding and insulation.
The primary applications for asbestos felt included.
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.
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.
But the workers who installed the felt were very likely exposed to the dangerous asbestos fibers.
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.
Old exterior roofing felt on flat roofs or sheds is also a possibility.
In fact most other roofing products produced in the early to mid twentieth century contained asbestos.
Construction workers used asbestos felt as an underlayment for shingles and it was also sometimes the main material used in built up roofs.
These roof mats were widely used in built up roofs in the us epa 1990c.
Asbestos fibers found their way into these roofing products.
Hi did any old bitumen roofing felts used in residential pitched roofs contain asbestos.
How dangerous is this.
Roofing felt and underlayment.
