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 Post subject: Paint Cracking
PostPosted: Wed May 30, 2018 8:30 am 
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Morning Guys,

First time posting on here so please take it easy on me!

I lined a bedroom recently and painted over the top with 2 coats of Johnstone's matt emulsion from the local merchant. I was looking at the wall the other night and have noticed that the paint has cracked slightly along the seam between the 2 lengths of lining paper in a couple of spots in the room. The walls were all sized with paste before the job and the papering job was good, nice tight joins and no overlaps.

Any ideas what could be causing this and how I can fix it? The only thing I can think of is I put my second coat on too early but I left it 3 hours (the tin says recoatable after 2 hours) and it was definitely dry when I recoated it as the room is in direct sunlight and it was a hot sunny day. I have enough paint left over to go over the offending areas for another coat but no point in doing this if it's not going to solve the problem.

Thanks in advance for any help :thumbright:

Phil

PS Although this is my first time posting I have been a big fan of the forum for the past year. We recently moved to an old house that hadn't had any work done since the '70s and I have renovated the whole house based on information contained here and some common sense and graft. It's amazing how much you can achieve if you're willing to get stuck in and listen to some lads that have plenty of experience :salute:


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 Post subject: Re: Paint Cracking
PostPosted: Wed May 30, 2018 3:50 pm 
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I would guess that there was some paste residue on the surface of the ling paper around the seams. Get some Zinsser Gardz and paint a coat of it up and down the seams and then give the whole wall another coat. You can buy a 1 ltr tin of Gardz for less than £10.



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 Post subject: Re: Paint Cracking
PostPosted: Wed May 30, 2018 3:57 pm 
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trb08150 wrote:
Any ideas what could be causing this and how I can fix it? The only thing I can think of is I put my second coat on too early but I left it 3 hours (the tin says recoatable after 2 hours) and it was definitely dry when I recoated it as the room is in direct sunlight and it was a hot sunny day. I have enough paint left over to go over the offending areas for another coat but no point in doing this if it's not going to solve the problem.

:welcomeuhm:
I am not a pro and I am clueless about wall papers. One possibility is that by doing two quicker than not coats of paint the paper got a bit moist and the rest is history. See what Tom says but I doubt you will be able to patch with paint just the seams after Gardz, you can only try though.

PS. Paint takes longer to dry over gardz, so give it a few hours before you try after your first coat, gardz dries quickly though.



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 Post subject: Re: Paint Cracking
PostPosted: Thu May 31, 2018 8:43 am 
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Thanks for the advice guys.

Hopefully using the Gardz will solve the problem and I can recoat the wall. So annoyed that this happened and only noticed it now the room is complete and carpeted ::b



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