Ahh, missed the "crazing" comment. My mistake, sorry.
I am surprised that there isn't a solution which is both reasonably water resistant and with a matt finish (oil-based matts tend to be more 'satin').
All good advice, thank you.
I am leaning towards a full oil-based system, finishing with Johnstone's Flat Oil. The areas I am painting will not get any direct sunlight, so I am hoping this reduces the chance of premature yellowing.
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