Light and dark patches

Ryan85

Ryan85

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Hi four coats in with dulux goose down scuff proof pmpaint and there is weird light and dark patches. I can't fathom how to resolve this one. Any help please. You can see where some areas don't look covered as much. Only seems to be on two walls. I washed them down before use. Iused an up and down technique across the wall with the roller and ensured there were no areas not evenly covered.
https://ibb.co/tD7PFFg
https://ibb.co/JRhM7t0

I'm by no means experienced with painting.

Any help greatly appreciated. It looks worse depending on time of day and lighting.
 
Last edited:
Did you paint quickly and lay off in the same direction? Adding 10 to 20% water may help as it'll keep a wet edge longer!
Also any uneven ness to the wall will show shadows, especially if the paint has vinyl in it!
 
Chivas69 said:
Did you paint quickly and lay off in the same direction? Adding 10 to 20% water may help as it'll keep a wet edge longer!
Also any uneven ness to the wall will show shadows, especially if the paint has vinyl in it!
Click to expand...

Thank you for your response. Ah so juggling kids and painting meant these were not done quickly that might explain it. Also no I didn't lay off but went over the wall with the roller once painted to ensure even spread. There are areas where the wall is more textured looking closer. I'm guessing if I want to resolve this I'd need to sand the wall back and start again.
 
I think the main thing may be that you went back over it once done. Any slight paint drying and going over it again will pull it a bit. You can do 1 meter squares or roller width top to bottom but do it quick. Each band (square meter or top to bottom) should take about 10 to 15 seconds and then a gentle lay off in a downward motion from top to bottom, then move on to the next band. I prefer top to bottom bands!
 
Ok that makes sense thanks but putting more paint on the walls isn't going to solve this, correct?
 
I agree that I think it is your technique.

Water will help but a better solution would be one of the propylene glycol additives. I normally use Floetrol but even bog standard propylene glycol (which is much cheaper) will help you to maintain a wet edge.

A better quality roller will also help (a lot). I tend to use the Purdy Colousus rollers with a short extension pole.
 
Thanks for the fourth coat I ended up buying Wooster and a pole. Much easier but it was too late by them. I'll sand it down and try again. I'll try the substance you mentioned.
 
opps said:
I agree that I think it is your technique.

Water will help but a better solution would be one of the propylene glycol additives. I normally use Floetrol but even bog standard propylene glycol (which is much cheaper) will help you to maintain a wet edge.

A better quality roller will also help (a lot). I tend to use the Purdy Colousus rollers with a short extension pole.
Click to expand...
Brilliant I'll look to buy them. Thanks
 
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