Sorry my question can be read both ways. What I meant was having walls skimmed but changing metal boxes first so should i leave them flush or protude by? to allow for skim - thanks
Tbh it doesn't matter that much you can leave a mm or 2 proud if you wish I've seen refurbs where the back box has been sunken in by half an inch or so all that meant was that you have long screws 2 mm is negligible
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