Another dangerous dog at large. :roll:
Chews a phone, snatched some poor fu**ers news paper, and even hides on top of a window sill and mugs some poor sod on a bike.
Not that clever a dog, someone captured his crimes on camera. :lol: :lol: :lol:
Well your shower by Wc is category 5 risk.
So technically your right, double check valve not a requirement.
Unfortunately cat 5 requires a different form of backflow prevention, one you don't seem to know about. :roll:
OMFG Who told you that you could tile. :shock:
The ones round windows should be equal on both sides. :roll:
As for the ones sloping around bath, why don't the edges line up with. :roll:
Don't you bother cleaning grout off the tiles.
As for your plumbing, its bl00dy disgraceful...
Thats easier said than done.
No sane plumber would want to play with such an un-necessary overcomplicated piece of carp.
Cant honestly see it remaining leak for too long, then some mug has to try and fix or replace that monstrosity.