LOML aka painter is unhappy with the ply panels I'm using in some panelled doors claiming that they behave like a sponge despite several coats of LittleGreene primer. Personally, I have my doubts and can't see what the problem is but best not go there.
So I was thinking about applying sanding sealer first to them? Good idea or not ?
If it is then cellulose or acrylic ? I'm leaning towards cellulose since I don't want any chance of the LG acrylic paint softening the sealer.
TIA