Hi all. I'm going to have the 22mm gas pipework to the combi re-routed as it runs through a wall in an inconvenient position. So I think I'll need to core drill thru with 38mm diameter cutter to make it big enough for a piece of steel pipe to line the hole. Is that correct?
And where can I get 6" of pipe to fit in the hole ..the steel pipe will need a wall thickness of about 5mm ?
Arthur
ps. It currently doesn't have a steel pipe lining so thats another reason I think it should be done again.
It's a new one on me. I hve never seen that done or heard the need. For one reason or another, the copper needs insulating from the masonry with tape.
If you are woried about the integrity of th wall, why not knock half a brick or so out and fill in with concrete or somesuch? If draughts, a very smal amount of faom filler.
Get a length of plastic sleeving from plumb ceter or such like, I cant remember what size drill bit to use, its about 26mm . You can also use 28mm copper to sleeve the gas pipe but you have to buy 3 metres the plastic comes by the metre.
Andy
I may have misread what I saw. Perhaps it was describing pipe runs within wall cavities or summat like that.
Thanks anyway.
Arthur
All proper plumbers merchants keep and sell off-cut lengths of 28mm copper pipe Which 22mm fits inside nicely.
-The message from "Davao" contains these words:
Weatherlawyer resides in my killfile so I did not see his original posting but as I understand it gas pipes need to be sleeved as a precaution against leaking gas into the cavity. When BG moved my meter the fitter used plastic pipe which was a sliding fit on the gas pipe.
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