DIY Doctor

Peeling/scratching/not adhering paint - please help!

Postby Helenosaurus » Fri Jul 27, 2018 5:56 pm

Hi there. Apologies in advance, this is long winded! So, I am a complete novice when it comes to painting walls really but I just assumed it would be as simple as painting them and things would be ok.

We moved into this house about a year and a half ago, and the walls had been freshly redone. All had been painted in white. We have tried to paint three rooms over the course of living here, and each one has presented us with an issue.

The main issue is that the paint does not seem to stick to the walls. It scratches off so easily (our son has pretty much used his wall as an etch a sketch that doesn't shake away), or is flaking off in various areas.

The white paint that the previous people painted with scrapes off with the lightest touch of the fingernail, and in fact you can wipe off the paint to the bare plaster underneath (in the utility room the paint is just flaking away all over place too).

This week I have painted the attic room. Anyway, the paint is now literally peeling off, and I get the impression I could just peel the entire wall off in one sheet. Picture attached of this.

It seems to be an adherence issue we think. I have Googled around and from what we can understand, may be they haven't sealed the plaster properly before painting over it?

Has anyone got any idea what we can do to sort our walls out? I am in the process of trying to repaint a number of rooms, one of which is to be a nursery, (I am pregnant so we are having a bit of a move about of rooms...), and so want to get it sorted as soon as possible.

Also, what would be the best way to repaint the already painted walls? Can I sand and then prime and then paint or will it be a case of stripping it down further than that and restarting?


Thank you!
Helenosaurus
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Postby DIWombat » Tue Sep 04, 2018 6:11 pm

Hi Helenosaurus, don't know if this is arriving way too late for you but (and I'm no expert), it sounds like the walls weren't prepped properly by applying a couple of mist coats to the plaster before painting.

Yes, you'd have to remove all the loose paint. Sand lightly and then seal the walls. I can't recommend a sealer but if you google Zinsser and phone their technical support, they should be able to recommend the correct product. Failing that, your local decorator's merchant (shop that caters primarily to professional decorators) would be able to recommend the right product and have it in stock.
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