Strange paint streaks or stains in newly painted room

by **Forestman** » Mon Mar 27, 2023 4:02 pm

We recently painted 2 rooms, and these strange stains have appeared after the paint dried. They look like water/condensation drips, but we have no condensation issues in either room.

Totally baffled as to the cause, and therefore what to do to fix.

Wisdom very much appreciated!

by **haringeysashwindows** » Mon Mar 27, 2023 6:17 pm

What paint did you use and what paint was there before?
Did you do any prep beforehand or just painted on?
was the previous paint glossy finish? Old / new ?

by **Forestman** » Tue Mar 28, 2023 8:40 am

haringeysashwindows wrote:What paint did you use and what paint was there before?
Did you do any prep beforehand or just painted on?
was the previous paint glossy finish? Old / new ?

We used Dulux Walls & Ceilings.

Prep was to clean with soapy water.

Previous paint is glossy and not sure on how old, done by the owners before us.

by **indianshelf321** » Sat Sep 09, 2023 4:31 am

As you mentioned the previous paint was glossy, which means that it was probably oil-based paint. Oil-based paint is not compatible with water-based paint, so when you applied the Dulux Walls & Ceilings, which is a water-based paint, the surfactant leached out and caused the stains.

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Strange paint streaks or stains in newly painted room