Oil Based Paint

[riptide]

I have always used an oil based paint on woodwork indoors, but a while back i made the mistake of using a water based paint over it which is now chipping off in places. It would be impossible to completely sand down all the doors, stairs spindles, etc, but could i now use an oil based paint bask over the water based one? On reading articles about this online it seems that I should never have put the water based paint over the oil one. Thanks.

[Old_Geezer]

Whilst I do not know, I'd have thought that if one coat wasn't adhering, a cover over the top would only last a limited time. Complete sanding may not be necessary, and jobs can be done gradually over a long period.

[ToraToraTora]

nope, all got to come off, the new paint needs a key.

[spathiphyllum]

As TTT says ^

painting over the now chipping paint will be a dire mistake. Once you apply wet oil based paint to chipping emulsion, the weight can cause it to flake off in bigger sections, bringing the wet oil paint with it. God help you if that lands on a carpet ;)

If this doesn't happen, the best you can imagine will be flakes coming off the wall as you paint, almost like when you start re-painting a half dryed wall. It will cause flakes and speckles of dry paint in the new wet coat.

It will be messy.

Maybe get a painter in just to do the prep work, then paint yourself to save money??

[TonyV]

agree ideally it will all need to be removed to give new paint any chance if adhering. You will find wire wool will help with any mouldings.

nehttps://www.screwfix.com/c/decorating/steel-wool/cat830410ed

[teacake44]

Rub down as best you can, and put on a good, ( none water base) undercoat, you may need two coats for a good job.