Green Asbestos Siding

These stains occur naturally over time.

Green asbestos siding.

Cement asbestos wall shingles outside and not easily friable unless being demolished or cut with power tools. It is very brittle and has a tendency to crack and break when nailed which can release asbestos fibers into both the air and ground. Asbestos siding was made by adding asbestos a naturally occurring mineral to portland cement. Exposure to and breathing asbestos fibers can result in lung problems and cancer.

See photos at asbestos siding in this document. The epa asbestos web site contains general information on asbestos sources exposure and health effects what to do if you suspect asbestos training and laws and regulations. The resulting product was very durable fire resistant and absorbed paint well. Covering old asbestos shingles with new siding may seem like an option too but it s not easy to do safely.

Asbestos cement can be dangerous if pulverized by sawing sanding breaking etc. When house siding begins to turn green it diminishes the exterior appearance of the home. It may have a grey dull green or white color. That cement was then pressed into siding shingles that came in a wide variety of sizes profiles and textures.

Let the siding dry then prime and paint with the best exterior latex you can find. And see asbestos cement siding for details about cement asbestos building siding its repair removal demolition or cover over. Lead paint wasn t outlawed until 1978 so it s sure to be present on siding going back to the 1950s. Asbestos siding is composed of asbestos fibers mixed with portland cement.

These two chemically similar minerals can be brown white green gray or transparent. Tremolite and actinolite are not used commercially but they can be found as contaminants in chrysotile asbestos vermiculite and talc. Green stains on siding are usually the result of mold mildew algae or moss. The use of a pressure washer for maintenance can crack the siding and lead to moisture intrusion if the pressure setting is high enough.

Asbestos cement siding is very brittle and can be easily chipped cracked or broken. Asbestos shingles are relatively strong but. It also occurs as a contaminant in chrysotile asbestos vermiculite and talc. Fortunately siding can be cleaned to remove not only green stains but other dirt and stains that may be taking over the homes exterior.