The one which caught me out was oil based paint over an acrylic paint, it
kind of never dried and went rubbery.
Brian

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The Sofa of Brian Gaff...

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On 04/01/2020 14:19, Bill Wright wrote:
On 04/01/2020 13:53, Andy Bennet wrote:
On 04/01/2020 13:18, TimW wrote:
An ornamental garden gate in softwood. I gave it a few coats of
aluminium primer and best quality grey oil undercoat. Mrs W chose a top
coat of Farrow and Ball exterior gloss which to my surprise is water
based. Anyway it doesn't go on, won't film at all.
https://photos.app.goo.gl/3rCvjuRpDWnPgmbz8
The undercoat is matt and was rubbed down a bit so advice to key the
surface better will be pointless. Is there a solution to this? or just
buy oil gloss?
TW

Oil and water don't mix. You could try a good wash over with sugar soap
and then have another go?

I used oil based primer then water based gloss and there was no problem,
but there was a delay of three weeks between primer and gloss.

Bill

I've certainly put modern water based gloss down on old oil based gloss
without any problem. Another +1 for sugar soap, and perhaps a better
rub-down?