Thanks for getting back... There is no soil stack from the roof and as far as I can see it's plasterboard finish around the whole en-suite with nothing boxed in above the basin. I checked the loft space above the toilet but could not see anything obvious. When the toilet flushes it leaves very littl...
Hi, I have very little water in the toilet pan in my upstairs en-suite, from checking this site it looks lke it is the air admittance valve. Unfortunately I cannot locate it anywhere. It's a 4 bedroom detached made by Leech Homes in 2000. It's not under the basin or toilet. Any help would be appreci...