Nickfromwales

Only the most pedantic BCO will ask for it to be at the very end of a run, so if that’s not practicable then just say you have an SVP and keep the details to an absolute minimum

I got done like a kipper fitting one a couple of weeks back lol. Was looking at the symbols from the back of the unit and my poor little brain didn't allow me to mirror it. An hour or so of swearing and looking like a tit in front of the client, and all good. Noticed just after I had finished fitting the self adhesive neoprene insulation to it...ffs. 🥲😭🥲

Why are you wasting room with mats when you can just clip directly to the P5 deck (floorboards)?

I’m saying you don’t have one run with a WC on the end and another further down the same pipe, you have 2 pipes, one in each room. Therefore you can ignore my corner branch as I mistakenly thought you dropped in the corner that side. Can you dril through the wall and connect the WC closest to the SVP into the horizontal run of the other WC?

Ah, cool. Picture speaks a thousand words, and all that jazz. The fitting in the corner will need to be one of these https://ebay.us/m/ICnVBo You don’t have 2 WCs in one 110mm line so my previous about Y branch can go away. All good with 90° bends (bent pan connectors) and straight runs. For the double corner branch, just order a cleaning / rodding eye (access cap) to push into the top outlet to close it off.

In isolation I’d use S&C for strength and longevity.

It could only be reported to the police as criminal damage. Council won’t do anything as it’s on private land, unless it’s hazardous. If it’s inert you’re on your own. How are they still there if you owe them no money??

Best to ring their customer support number and they can talk you through it. There’s not enough info here for us to help, as it could be a few different things, as it’s a wireless system.

Yes, they both can be on one run, up to 4 WC’s iirc. You can get a Y branch and a T branch, and this needs thought and planning. Ideally you’d have a Y branch with a 135° male to female bend in it, which then picks up WC 2, so the flushed water is already heading in the direction of flow. If you’re too tight for space to do this then you can use a T branch, but it should be lower than the outlet which is difficult to do with a standard, close-coupled WC. If you’re using framed units (like a geberit) then it’s really easy as the pipe centre for the WC outlet is much higher than the standard 7” centre of a regular UK WC. Best to get some fittings and see what will won’t work by doing some dry mock-ups. Are you using framed (floating) wall hung or regular WC’s? Using one of these at WC 2 would make life a lot easier for you.

You’ll be fine. Done plenty of bathrooms back to back like this on one stack and sometimes no SVP at all, just an AAV (air admittance valve) to ensure functionality. Green light from me, and I’ve been joining pipes together for 35 years.

Model number please!

I’m in complete agreement.

Agreed. But the insulation values wouldn’t pass grade either so all likely to be ‘off the radar’. Good point of course, and something further for the op to consider. But all soft furnishings are combustible in that room, and the XPS would be behind the skim, so if an open flame was removing the skim to get to XPS a) you’d not be alive to watch in reality, or b) would be standing outside waiting for the fire brigade.

Are you looking to get MCS / grant here?