How To Tell If Asbestos Siding

Asbestos was also put into cement used on the exterior of buildings to help insulate the.

How to tell if asbestos siding.

The use of a pressure washer for maintenance can crack the siding and lead to moisture intrusion if the pressure setting is high enough. If they look old they might have asbestos fibers in them. Asbestos siding was manufactured to resemble many different materials so it doesn t always look the same. Put on a mask and scrape away some siding material into a baggie.

Installed before 1978 the fiber cement shingles probably contain asbestos. It does have some characteristics too look for. Roofing and siding shingles are among the most common materials to contain asbestos and will readily release fibers into the air if broken. While older homes will likely contain asbestos in roofing insulation and tiles it can also be present in exterior siding.

Asbestos ranks high on the list of dangerous substances because of its toxic and carcinogenic properties when airborne. The only true way to identify asbestos siding is to have it tested. If you don t know the age of the shingles inspect them for wear. Asbestos shingles were so common during the 20th century that almost any shingles installed between 1920 and 1986 probably include asbestos.

It may be smooth or have a pressed wood grain pattern on the surface of the board. It is generally very brittle and the back may be black and have the appearance of tar paper. Continue reading below our video of the day. You may choose to take a sample of siding from a damaged area of siding.

Identifying asbestos siding the only way to be sure if your siding has asbestos in it is to collect a sample and send it to an accredited testing lab. Contractors and inspectors or anyone identifying asbestos siding can t tell from just an on site inspection whether or not your siding really has asbestos in it. Age or date of installation. Determine when the shingles were installed on your roof.

Inspect exterior building materials. Layers of paint or finish coatings. Asbestos cement can be dangerous if pulverized by sawing sanding breaking etc. Asbestos was used to make several exterior materials.

The original shingles of both asbestos cement and fiber cement usually come from the factory painted white on one side. Look for a siding that is made to look like roof shingles. It is ususally in a shingle shake form 12 x24. If you suspect that your siding may contain asbestos there is no need for alarm.