Cutting a 4" hole through a wall.
Discussion
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.
...Which is just what I was going to suggest.Cutting a hole through 9" of brick seems a bit like hard work to me.
Goochie said:
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 
no elecs required
Goochie said:
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 ?
Personally I'd drill a guide hole all the way through, go in an inch or so from inside out and then complete from outside in to minimise the blast.Is the "exit wound" likely to be messy ?
Not a job I'd want to do on a ladder mind.
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.
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.
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.
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.They suck themselves on to the wall, you don't actually have to hold the weight of it while it's working.
They are also wobbly and s
te and the core bit jams in the hole half way through. Strange that that's the one thing Hilti make which is ste.
Me, I'd just do the job with a lump hammer and cold chisel, then mortar around the pipe afterwards. Core drills are a pain in the arse especially when you're using them sideways while standing on something and the brute force method is likely to be quicker and easier.
They are also wobbly and s
te and the core bit jams in the hole half way through. Strange that that's the one thing Hilti make which is ste.Me, I'd just do the job with a lump hammer and cold chisel, then mortar around the pipe afterwards. Core drills are a pain in the arse especially when you're using them sideways while standing on something and the brute force method is likely to be quicker and easier.
Plotloss said:
Goochie said:
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 ?
Personally I'd drill a guide hole all the way through, go in an inch or so from inside out and then complete from outside in to minimise the blast.Is the "exit wound" likely to be messy ?
Not a job I'd want to do on a ladder mind.
Just make sure that your drill has a clutch. If you talk to a half decent hire shop they should give you the advise you need. I've done several, and they do make a mess, but doesn't all proper building work? Nothing like as bad as cutting bricks or raking mortar with a disk cutter. I've got a decent drill myself, but I've never found it economic to buy a decent core drill. 9 inch disk cutters are far more horrible to use up a ladder, and much more dangerous IMHO.
Definitely meet somewhere in the middle as Plotloss says.
Pigeon said:
They suck themselves on to the wall, you don't actually have to hold the weight of it while it's working.
They are also wobbly and ste and the core bit jams in the hole half way through. Strange that that's the one thing Hilti make which is ste.
Me, I'd just do the job with a lump hammer and cold chisel, then mortar around the pipe afterwards. Core drills are a pain in the arse especially when you're using them sideways while standing on something and the brute force method is likely to be quicker and easier.
I've tried that approach too. I'm very sThey are also wobbly and s
te and the core bit jams in the hole half way through. Strange that that's the one thing Hilti make which is ste.Me, I'd just do the job with a lump hammer and cold chisel, then mortar around the pipe afterwards. Core drills are a pain in the arse especially when you're using them sideways while standing on something and the brute force method is likely to be quicker and easier.
t at bricklaying and pointing, so it doesn't work for me. Knocking a hole in something is easy enough, but making it look good afterwards - not so simple. If it's for an extractor the covers are generally designed with absolutely minimal overlap for the hole, and often the kits come with a wobbly tube which wouldn't support wet mortar. Core drill is the best option IMHO.
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