[GSBN] Exterior plaster sealer?

[M Oehlmann]

Bonjour,

we had a similar experience at the Atlantic coast in Plozévet. The
limeplaster did not have the time to protect due the long period it needs
for drying and the weather conditions had been just wet. The solution here
had been external woodden cladding with 5 cm airspace between render annd
wood. The house dried out and serves perfectly for tourists.

I could send pictures off list.

Best wishes,

Martin Oehlmann

2011/1/21 Darrel DeBoer <Darrel at deboerarchitects.com>

>  We just finished a house a couple hundred feet from the Pacific Ocean
> about 2 hours north of San Francisco.  The exterior plaster is lime, flyash,
> sand and chopped straw.  The texture is smooth and there's no vapor
> barrier.  The problem is it's quite porous.  Rain soaks in without even
> thinking about it and there's a wet ring for the bottom 6 inches (15 cm) of
> the interior of the bale wall.
>
> We've used this plaster in less frightening conditions with great results,
> but this is a place where everything is tested: it's always moist, the winds
> are amazing, everything rusts immediately.
>
> It appears we need more of a sealer than we have, so what will allow vapor
> to escape? Water glass?  Xypex? Thompson's Water Seal?
>
> --
> Darrel DeBoerwww.DeBoerArchitects.com
>
> download building codes:http://bulk.resource.org/codes.gov/bsc.ca.gov/
>
>
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>
>
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