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Hairline cracks

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lobstar67

Post subject: Hairline cracks

Posted: Sun Apr 24, 2011 9:45 am

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Hi

I have some walls in a bedroom that have very fine cracks in, can I just skim over or do I need to v them out but there is quite a few.

It is old plaster the hairline cracks don't seem to be getting any worse.

Cheers

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cwplastering

Post subject: Re: Hairline cracks

Posted: Sun Apr 24, 2011 12:08 pm

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if that wall is nice and solid then fully meshing would be ideal... as in 1m wide scrim on a roll bedded well into the first coat of plaster, or fibreglass fibres in the first coat...

doesnt sound like movement cracks, just shrinkage cracks over a long period, dehumidifiers can do this

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jozeffo

Post subject: Re: Hairline cracks

Posted: Sun Apr 24, 2011 11:22 pm

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If they are cracks, then solve the problem that is making them crack.

It sounds like it is just crazing, in which case just put a thinned coat on and then a coat of something substantial such as acrylic undercoat, before the usual two topcoats.

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cwplastering

Post subject: Re: Hairline cracks

Posted: Sun Apr 24, 2011 11:53 pm

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well youve got me there jozeffo?

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