WC into understairs pantry - nightmare

[dilalio]

I would have done my utmost to get it all below the raised floor and with a level access tray. Who wants a step up!
Also better for future use by less able folk!
Even if it meant digging up the existing floor, I'd have done that.
If I were you, I'd be doing this now as you've come this far and learned a fair bit

 

[advisewelcome]

I would have done my utmost to get it all below the raised floor and with a level access tray. Who wants a step up!
Also better for future use by less able folk!
Even if it meant digging up the existing floor, I'd have done that.
If I were you, I'd be doing this now as you've come this far and learned a fair bit

Thanks for the reply. Was what I was thinking. Be so much better if the tray could be flush with floor.

If we are doing it - have to do it at this time.

I'll have a go, but I need to ensure the DIYnot community is with me? Yes??

I think first course of action is:

1. Check out the pantry floor, by taking up some of the quarry tiles, check what the floor substrate is? I could chip away it, drill it and see what the deal with digging a trench in it? Porbs need a jack hammer?

2. See what piping would work - from the garage need a drain connector elbow with a boss (on the bottom and not top) and then an elbow on the other side with a drain connector to come up for the WC pan?

... sound okay for a plan of action?

Are you with me - Group high-fives?

 

[dilalio]

You'll need to carefully break out around existing clay collar and expose it.
Go down deep enough to get your transition fitting in and a spigot elbow into that, within the ground.

Make the hole big enough so that you can get an angle grinder down there to cut the clay back, behind the collar to accommodate the new fittings.

Make a nice square cut by going in from the side and the down from the top - like you would slicing a cake.

Put a towel down inside the pipe to stop debris going down the sewer.

If you leave very thin slices of cake, these can be CAREFULLY broken off with gentle hammer taps - but don't crack the pipe or you'll be in trouble!