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steves plastering
Senior Member
Joined: 05 Jun 2007
Posts: 129
Location: Newcastle upon tyne
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 Posted: Thu Jun 28, 2007 9:13 pm Post subject: Plastic inbetween skim coats?????? |
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My inlaws are stripping paper from their living room when near the window they discovered a bubble like surface, they ran the scraper over it and it produced a latex like layer below the top skim coat.
The skim underneath was strangely of good quality, as was the skim on top of the latex like stuff (although if you peel the latex like stuff the top coat of skim obviously comes off aswell)
They called me over to look at it and i have never come accross it, it is near a window which may suffer damp, is this some sort of damp proof system i have never heard of.
I would have said that it was impossible to skim onto a plastic / latex like sheet but this seems to have been done.
It isn't even the whole wall, approx half of it?????
They plan to paint the walls, what can be done? and more importantly has anyone got any idea what the hell this stuff is???
Steve.
(As i am really only a part time plasterer my answer was just get the stuff off and i'll start from scratch with a skim but i'm interested to know what it was) |
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andy-p-
pro plasterer
Joined: 31 Jan 2007
Posts: 398
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| Posted: Thu Jun 28, 2007 9:25 pm Post subject: |
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Could be sbr, not sure without seeing it. Sbr is a latex based waterproofer that someone might have painted on to stop the damp coming through then skimmed straight on top of it.
Most spreads use it outside when rendering as a slurry ie sbr, sand and cement, ( sand and cement gives you a mechanical key) Brush it on, give 2 coats then render on top. It good stuff.
Wots under the skim and latex, sand/cement or hardwall??? |
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skiking
Senior Member
Joined: 13 Sep 2006
Posts: 3086
Location: Cheshire
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| Posted: Thu Jun 28, 2007 9:29 pm Post subject: |
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Are the windows newish ? The reason I ask is when we had double glazing installed all the plaster damage was repaired by silicon i.e where the plaster had fallen off silicon or gripfill was used as an adhesive to put it back  - sounds bad but in fact it was un-noticeable until I decorated  |
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