Asbestos Asphalt Shingle Siding

The building shown at left located in hughsonville ny using the thatch edged shingle siding style is almost certainly sided with asbestos cement shingles. Originally asbestos siding was used because of the fire resistant properties of asbestos. Because asbestos in a mineral and fibrous adding asbestos to siding materials also increases strength and durability while providing some insulation and fireproofing to the structure.

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If they look old they might have asbestos fibers in them.

Asbestos asphalt shingle siding.

The national emissions standards for hazardous air pollutants neshap identifies several asphalt containing roofing products that may also contain asbestos including. You can t drive screws and nails through them without pre drilling. Asbestos was used in asphalt based roofing products such as asphalt roofing or siding shingles in north america as early as 1891 and continued into the early 1980 s. Determine when the shingles were installed on your roof.

No installing new siding over the old asbestos siding isn t a viable option. Asbestos shingles were so common during the 20th century that almost any shingles installed between 1920 and 1986 probably include asbestos. Asbestos shingles are relatively strong but brittle. Some asphalt siding may contain asbestos in the asphalt impregnated felt backer or asbestos may also be in the asphalt impregnated paper tar paper or felt used as a house wrap under the siding.

It is very difficult to remove spray paint graffiti without also dissolving or discoloring some of the siding surface coating material itself. If you don t know the age of the shingles inspect them for wear. From the 1940 s to perhaps the early 1970 s it was popular to cover peeling wood clapboard buildings with this durable material. This would trigger dust and asbestos dust is a problem as i ve mentioned.