Hi all,
Can anyone direct me to good instructions for replacing a UPVC window with a bigger one, in a blockwork cavity wall?
I have a large diamond-wheel angle grinder to enlarge the opening, and a new UPVZ window. I mainly need clarification on how to make good the wall jambs after the hole has been enlarged, whether any damp-proof membrane is need anywhere, and what kind of lintel to use, and how to install, etc.
Thank you,