OK. My plan was expanding foam to fill the hole, cut back and fill/sand/fill etc
I'm sure that'd work fine too tbf. Never filled on top of cut expanding foam like that before, but I can't see why it wouldn't work, although I'd be worried that it'd dent if knocked.
👍 I have expanding foam and not plasterboard so seems sensible. Will order the Toupret
@Nef started
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OK. My plan was expanding foam to fill the hole, cut back and fill/sand/fill etc