Information about health and safety at work.
Asbestos bitumen roofing felt.
Work on any type of asbestos can be dangerous.
In fact most other roofing products produced in the early to mid twentieth century contained asbestos.
How dangerous is this.
These systems are sometimes used to construct roofs in the form of roofing felt or roll roofing products.
Roofing felt and underlayment.
Old exterior roofing felt on flat roofs or sheds is also a possibility.
It was a universal solution to roof concerns.
These roof mats were widely used in built up roofs in the us epa 1990c.
Asbestos fibers found their way into these roofing products.
The primary applications for asbestos felt included.
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.
Shingles weren t the only roof product containing asbestos materials.
Construction workers used asbestos felt as an underlayment for shingles and it was also sometimes the main material used in built up roofs.
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.
The felt was made up of sheets of asbestos material that was then covered with asphalt.
Roofing tar and asphalt liquids.
Work on roofing felt would not normally be notifiable provided that the material is in good condition.
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.
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.
Hi did any old bitumen roofing felts used in residential pitched roofs contain asbestos.
But the workers who installed the felt were very likely exposed to the dangerous asbestos fibers.
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.
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.
Various guides go into detail about other asbestos locations.
