Roofing Over Asbestos Shingles

The asbestos in shingles siding and other home products is encapsulated that is surrounded by a coating of something else that keeps it from becoming airborne.

Roofing over asbestos shingles.

Any asbestos cement roofing that shows evidence of damage such as broken roofing or noticeable surface weathering may need to be replaced. Shingles placed on a roof before the mid 1980s might contain asbestos. If the asbestos is not airborne it is not a danger. If the asbestos material is in good shape and will not be disturbed do nothing.

According to the spruce website american manufacturers of roofing material like johns mansville offered at least one roofing shingle product that included asbestos cement. If your roof or siding shingles are in good condition they are unlikely to pose a health hazard to you or your family. Asbestos roof shingles could prevent fires from starting or spreading from a neighboring home or building. No roofing company today uses asbestos in shingles.

No roofer in their right mind would use asbestos based shingles on any project nor can these types of shingles be produced or sold in the united states. In fact roofing practices and building materials have changed to be safer and healthier since then. Most asbestos shingles overhang on the eaves and often the gables. Asbestos cement materials will typically last about 50 60 years.

This would avoid the cost of the asbestos demolition and also keep the church relatively water tight during the process. If you do somehow end up with those shingles remaining on your house we doubt they will affect your sale. I also suggestinstalling the underlayment sort of as you go when you install the new roof in order to minimize the number of fasteners required by the underlayment. By the 1930s asbestos was a staple of the roofing industry.

These shingles are a fact of life in that area and for houses of the early and mid 20th century. However if the roof is in good condition it may not need to be disturbed so long as it is properly and regularly maintained. A local church is planning to re roof with metal shingles and we would like to sheet over the existing a c roofing and then install the shingles. Because of its fire resistant properties asbestos was common in many home materials including roofing shingles.

State permits are often required so if you are looking to have your asbestos shingles repaired or replaced be sure to contact a roofing contractor who will be able to assist you with your area s asbestos removal laws. However asbestos fibers can cause serious lung and respiratory problems if inhaled.