Plaster has hairline cracks

Question

I have recently got my walls skimmed. After a day I noticed hairline cracks like you get when a window is cracked. Plasterer says it’s fine and happened due to the hot weather outside. He says it’s fine to paint after whitewashing the walls. Should I stop him from painting as I’m not sure if this is normal to have those cracks. I don’t want the cracks to reappear after painting as it’s a waste of my paint and time. Please help me?

Wesley · Answer

It's needs skrimm the plaster over to prevent cracks

Darren · Answer

If its a reskim on walls going over old walls that has cracks in it yes they will keep reappearing it should have be redone to eliminate the cracks hence prep work not been done correctly,if over plasterboard then yes heat can affect it I had same issue over plasterboard other day in some arears hence I have stop skiming till cools down

Adam · Answer

Hi if it’s cracked already then it will definitely come back once painted ,paint don’t stop cracks it will hide it for a short time then come back 
,the wall should have been meshed,this method 
Reinforces the work so a plasterer can safely say it shouldn’t crack again

Saul · Answer

Hello mate was he skimming on gyproc or was it old existing walls

Mark · Answer

Also it may of not had enough primer before skimming on top, in this weather i would go over the wall twice with slightly more water in the mix again depends on which background, also sbr primer is the best to use before skimming with multifinish.

Hugh · Answer

This cracking can happen in hot weather as the plasterer said and you can go ahead and paint without it shown through the paint whatsoever, however if the plaster has dried to quick then the cracking can show through. If you rub your hands over it slowly it should feel really smooth, but the only way to find out is to take the plasterers word for it.

Sam · Answer

Yes this is more then likely to do with the hot weather, as long as it sounds solid when you tap it, it will paint over with no problems

Plaster has hairline cracks

Follow Us

Cookies

Manage Cookies

Essential cookies

Analytics & Tracking

Advertising