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Old 08-18-2010, 10:44 AM   #1
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Plaster Walls. asbestos


Hi,

Quick question. I am working on painting our living room and noticed that there was a textured paper on the wall. It was painted over some time ago and cracks formed beneath and are showing through.

I was in process of repairing the cracks when I noticed how easily the paper was coming off the walls. Could it be asbestos wrap paper on the walls? Its thin, totally dried out, and flaky. I can post a picture of a piece.

Thanks.

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Old 08-18-2010, 12:02 PM   #2
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Plaster Walls. asbestos


More likely a wallpaper covering to disguise plaster cracks. I've never heard of that paper being made of asbestos. The only real way of telling is to have it tested.
Ron

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Old 08-18-2010, 12:04 PM   #3
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Plaster Walls. asbestos


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More likely a wallpaper covering to disguise plaster cracks. I've never heard of that paper being made of asbestos. The only real way of telling is to have it tested.
Ron
Yea I am thinking to send out a sample of the paper. The house was built in 1940. It has standard framing with cement board and plaster on top.
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Old 08-18-2010, 12:40 PM   #4
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Plaster Walls. asbestos


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Yea I am thinking to send out a sample of the paper. The house was built in 1940. It has standard framing with cement board and plaster on top.
What you have is a mulicoat plaster. There wasn't any cement board in the '40's. The brown coat went over a lath material. It was topped with the white plaster coating.
If you have a decent microscope(or even a magnifying glass, you can identify asbestos by matching it to a picture on the web. Asbestos is easily identifiable.
Ron
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Old 08-18-2010, 12:43 PM   #5
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Plaster Walls. asbestos


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Originally Posted by Ron6519 View Post
What you have is a mulicoat plaster. There wasn't any cement board in the '40's. The brown coat went over a lath material. It was topped with the white plaster coating.
If you have a decent microscope(or even a magnifying glass, you can identify asbestos by matching it to a picture on the web. Asbestos is easily identifiable.
Ron
Is it just called brown or is that the color. Because what is behind the wall is a gray layer followed by a white layer. There is definitely no lathe behind my walls (from what I have looked at).
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Old 08-18-2010, 01:14 PM   #6
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Plaster Walls. asbestos


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Is it just called brown or is that the color. Because what is behind the wall is a gray layer followed by a white layer. There is definitely no lathe behind my walls (from what I have looked at).
It is likely rocklath with traditional 2 coat plaster over it. The rocklath in the 50's and 60's and maybe back into the 40's was a 2x8' or 2x9' by 3/8" thick board that very closely resembles drywall. Now virtually the same product as was used at least in the 60's is sold in 4'x8' sheets, commonly in 1/2" called blueboard or plaster board. It is sold with drywall at all major home improvement stores. As far as I know rocklath or the 2 coat plaster did not contain asbestos, but I don't know that for certain.

The order would have been rocklath, brown coat, finish (white) coat.

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