hello all
i'm having major probs with my old garage roof
and have decided to replace it
trouble is its an old detached council type concrete slab framed
jobbie.......
i want to build an 'a' frame so i can have a sloping roof as opposed to a flat one
but how do i fix the frames to the concrete walls, as they are
bloody solid, and i cannot seem to drill into them to get a fixing point?
many thanks
johnboy