Damp Patch In Garage With White Fluffy Deposits That Has Never Dried Out


Postby sfrazi » Sun Nov 10, 2013 12:35 am

One of the walls in our garage has been boarded with insulation backed plasterboard and skimmed.

A dryer was then in use on this wall and as a result there is a damp patch behind the dryer.

We have removed the dryer from this wall and made sure its vented outside.

The problem is the damp patch has never dried out and has white fluffy deposits (salts I think).

What is the best way to get rid of the damp patch?

1. Apply a salt neutralizer?
2. Hack some of the skim off and re-skim?
3. Hack skim and plasterboard(revealing the insulation) and fill with appropriate filler?
4. Something else.

Any advise would be appreciated.

Thanks
sfrazi
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Joined: Thu Jun 30, 2011 12:55 pm

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Postby welsh brickie » Sun Nov 10, 2013 6:10 pm

try coating it with a pva solution
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Postby sfrazi » Mon Nov 11, 2013 9:10 pm

Thanks for the reply. Will that get rid of the white deposits that keep coming back?
sfrazi
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Joined: Thu Jun 30, 2011 12:55 pm


Postby rap12 » Mon Nov 11, 2013 10:11 pm

If this is a "damp patch" then PVA will not work because it is soluble ie. it will dissolve in, or on, moisture, creating a slightly more messy situation.
I'm not sure what a coating of PVA would be meant to do anyway?

Why not wipe off the "fluffy deposits" with a weak solution of detergent and water, or a drop of bleach and water.
Then leave it alone and check it out in say a month's time.
rap12
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Joined: Tue Nov 05, 2013 1:17 pm


Postby rap12 » Mon Nov 11, 2013 11:07 pm

PVA Solution will
rap12
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