Cutting a 4" hole through a wall.

[Goochie]

Our house has 9" solid brick walls. I would like to fit an extractor fan in the bathroom that will need a 4" hole putting stright through the wall.

Whats going to be the best way to do this? I dont really want to chain-drill it then knock out the middle bit!

[Goochie]

Just spoken to the hire shop and he says he has "just the thing for that job" and it'll be £30 for a weekend.

SOunds like a bargain to me but I'll have to check for the wear charge!

[Goochie]

ALawson said:

Could you not just take it up through the ceiling into the attic, run some ducting across the loft and then down through the u/s of the facia boarding thing.

I could, but I dont want to ruin the look of my ceiling by putting an extractor in it

[Goochie]

I'm not too keen on holding a rather heavy drill, with both hands whilst up a ladder at 1st floor level.

Is the "exit wound" likely to be messy ?

[Goochie]

ALawson said:

Just hire one of these.

http://www.hilti.co.uk/holuk/modules/prcat/prca_na...

We use these at work, I needed to core 82 No 75mm dia holes through a 1.5m thick slab I think it took us 1 week with one rig and a few extra core cutting heads.

Imagine using that 18ft up a ladder.