[quote author=greg link=1083959024/30#40 date=1085497976]so why do you say that 22mm to bath taps is wrong? are you on an unvented DHW system? [/quote]
Hi Greg. Having re-read my ramblings I didnt really make it clear that it was actually 3/4" leading into the tap connectors and they were tee'd off the 1/2" leading from the loft cistern and the DHW vessel which does is vented.
Concerning the Imperial / metric conversion thing, after not a little mucking about, the 15mm compression fittings worked a treat for me on the 1/2" but I just couldnt get a tight fir with 22mm on 3/4". Fortunately I have found a place locally who sells them.
I've had a bit of a mare connecting copper 32mm waste pipe to the bath trap. I guess its an ultimate plumbing sin but I ended up having to wack some LSX in which seems to have done the trick.
Please correct me if I'm wrong, I always thought a bath waste should be 40mm ? I was going to change the whole pipe upto the stack but the stack connection was hidden in the most awkard manner possible entailing the possible demolition of the entire side of the house.
Some fella was in today tiling the floor and walls and gave me some great tips about locating the WC pan and drilling tiles. I've r4eally enjoyed this jobby, depite not getting any money for it, I've learnt shed loads from it. Thanks to you peeps for giving me some advice as well.