Ready to hire?

Post your job in minutes, browse real reviews and choose who to speak to.Post a job

Need some tips or advice?

Painting & Decorating

Mistake! Vinyl Paint as mist coat

Anonymous user 09/03/2024 - 2.42 PM

Hi I had my living room skimmed recently. It had a damp course about ten years ago, and the area where the dampcourse was done has dried out fully. Above this area however (chest high) there are patches where the plaster hasn't FULLY dried, even after 5 weeks. I was told to give it a mist coat and have used Dulux Matt Brilliant White, watered down with about 20-25% water. Ive since found out that the Vinyl content of this paint wont allow this residual moisture to evaporate, and that I should have used a contract matt. Its had one coat and ive stopped there since realising my mistake. Is there anything I can do to rectify this error before I continue? I assume painting over it with a contract matt wont do the trick, as the vinyl is already on the plaster. Any advice you could give would be greatly appreciated

Are you a tradesperson and able to answer this question?

2 Answers

Aaron Decorators

Rating: 5 out of 5

Spalding

Hello, if the patches haven't dried after 5 weeks then there is still moisture in those areas. Could be a pipe leak or damp in those areas. The area you painted can be scrapped back to plaster, then you can water down the contract matt 50/50 and apply it. Hope this helps.

Answered25 August 2016

Pete Croft Decorators

Rating: 5 out of 5

Grimsby

hello,yes you are right vinyl emulsion of any make isn't to be used as a mist coat for new plaster work as it doesn't let the plaster breath under the paint applied,it must be a contact matt emulsion mixed with water at a ratio of 50/50.Where you have applied the vinyl emulsion to the wall,id advise to scrape it off,as this may cause you problems in the future with blistering paint.As for the slight damp patches not drying,it may be caused by several reasons,by the thickness of the plaster/render,room temp(no heating etc)this slows drying time,you still may have damp which has moved above the damp corse,or a leak under the plaster if continues to stay damp,contact the plasterer who did it to advise.Always make sure the plaster is completely dry before applying anything tho.hope this is of some help to you.

Answered27 February 2017