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Painting & Decorating

Big mistake? Mist coat but forgot to dust

Anonymous user 09/03/2024 - 2.56 PM

Hi I sanded the walls down after the plasterer finished using a machine and they look good. I forgot to dust the walls or wash them before applying no nonsense wattered down paint. It is dry and it looks fine but will the paint peel off later? Should i sand the walls again and reaply the mist after washing the walls down? "Thanks Timothy. I had to sand it because the plasterer started fine upstairs but got progressively worst. My mistake because i agreed to pay him in stages even it only took a week so by the time he done in the dinning there was very little left to pay. And the walls were un even and bad. He demanded payment in full for no reasons i said no until he fixes all bad plaster so he walked off. I had to in the emd sand the walls down and the smooth now and it looks like the mist is been sucked in by the plaster. I used no nonsense bare plaster mixed with 10% water. Upstairs i dont need to sand. Just trying to mist to save a little on decorator bills. Thanks for the great advice"

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1 Answer

Timothy David Interiors

Rating: 5 out of 5
Tonypandy
Hi. My opinion is that you are probably ok, if you used a matt paint that was diluted well then this should have been absorbed by the plaster. I know people quote the ratios for mixing paint/water but thats only half the story. Its a dilution to a point where whoever is applying it is able to see and tell that it is being absorbed by the plaster, then thats a mist coat done well. What probably happened to any residual dust was the roller picked it up with the paint as you rolled. So the dust is now in the paint but the mist coat is a preparotory coat not finishing coats. Why did you have to machine sand freshly plastered walls? A plastered wall should be in a condition ready to accept a mist coat. Then 'minor' defects filled, abraded and then mist coated again
Answered12 May 2018
2