Hey - I have the rim of the bathroom walls where some new tiles have been laid . But there is 1-3cm of the rough old underlay, some come out some in , villa board etc.
what’s the best way to clean this up - put a lil on it? A metal rail or wood trim but it w have to be 3cm thick
Or can I sand it and put gyprock multi compound or spatik filler on it?
thx


