I need a 4" hole through brick, for an extractor fan. The ony problem is that its two floors up, and there's no access to the outside wall. It's directly above a small tile roof and the only place to put a ladder is about 6' to one side and too small to put a scaff tower.
Really I need to think of a way to core drill and fit this, working entirely from the inside and without dropping the plug.
Any bright ideas?
I can probably lay some plywood and carpet over the roof temporarily, just in case of falling masonry, but I'd rather avoid dropping anything big and heavy.
Thanks