Drilling core through cavity wall for bathroom and kitchen extractors

I was assuming (but it's only an assumption) that HtC's red bricks are of the 'London brick' type, the stuff you can write with on hard surfaces! In which case it should be like a hot knife through butter - ish.

But if it's like modern red bricks, then I guess they will be pretty hard.

A test cut from inside the hoosie would soon determine. As Phil says, tho', the cutter might not be deep enough!

 

I'm trying to get me rattler around the whole not being able to do the whole hole from the inside scenario tbh.
Every extract I've ever done has been from inside out, when you run out of cutter break the core off, remove, and carry on through, I've gone through 30" granite walls no problem.

 

He doesn't want to burst through the render on t'outside. Yes, most of it should be done from the inside.

 

Pilot from inside to out, slightly angle to give a fall on the vent pipe.
Core from the outside in about 30mm
Do the rest from inside.

Core bit will easly do inner wall in one go, remove the cut masonry core & carry on drilling to you done outer core.

 

The ladder!, easier to hoover and dust than mend a broken wrist, leg or worse.

 

Breaking your neck!

Core drilling up a ladder is NOT recommended, clutch or no clutch on the drill, if it jams, you'll break your wrist, a nasty smacked in the beak, or fall off the ladder.

Not that much dust,just lay a dust sheet on the floor.

 

You would not need to go up a ladder with one of these but you may not get a clean cut.
Sorry! Could not resist!

 

A serious reply to your last post.In my limited experience of drilling holes in walls up on second storey when you use much pressure on the drill it also tends to push the ladder away from the wall. If the drill kicks back and you drop it I would not want to be footing the ladder. Remember in the heat of the moment you might lock it on!
If you do tie the ladder to the wall and you to the ladder you might not be able to undo yourself if you injure yourself and it is easily done believe me . The ambulance to the left arose about a year ago when I was rushed to A & E . Just see what a professional would charge IMHO. After all he will have done it before and know what the risks are involved better than you with respect.

 

Your Here_to_confirm, your still in one piece, great when peeps report back everything worked out ok.