Wall hung toilet not tight against wall

[josip]

We're getting a wall hung toilet installed. Went with a Toto rimless and a Geberit Sigma Slim Frame

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After the plumber installed it, the bottom of the toilet sits 16-17mm out from the wall behind and said we'll have to put blocks of wood in between to support it.
I could understand shims for 1-2mm but 16mm seems ridiculous.
The plumber said it's because the wall isn't plumb, but that didn't make sense to me. Even if the wall wasn't plumb, the frame would be parallel within the wall and the toilet mounted perpendicular to the wall and thus tight.
Anyway I've checked the wall and it's at most 2mm off perfect over a metre.
To me it looks like the hooks aren't coming out perpendicular from the frame.
Am I right to insist that the plumber gets it tight against the wall? He's coming back anyway to stop it leaking.

 

[HERTS P&D]

I say that wall hung toilet are the worse idea ever!

Andy

 

[Wayners]

If the wall is only 2mm out then the toilet is not vertical?

Either the wall or toilet is not vertical and that's why you have a gap

 

[dilalio]

If the wall is plumb but the bolts are not level, then the frame is not plumb, behind the wall.

Or maybe a badly moulded pan.

 

[dilalio]

He's coming back anyway to stop it leaking.

It's leaking because it isn't sitting flat... That's affecting ALL the connections, not just the brackets.

 

[ETAF]

put a level up against the toilet , maybe at the back - may need someone else to help and see if the back of the toilet is level
depending on shape of toilet , you may be able to also out across the top

i would expect it to be level , as thats how he/she arrived at all those shims

i'm assuming the gap is exactly the same on the other side
also is the wall upright - put the level there to ?

do you have a laser level ?

 

[dilalio]

I say that wall hung toilet are the worse idea ever!

Andy

You don't like anything that's well hung!

 

[dilalio]

do you have a laser level ?

Or a light saber!

 

[josip]

The leak was because he pulled too much of the flexi connector waste pipe to make his life easier connecting to the toilet. It disconnected from the outside down waste pipe and was flowing down inside the cavity block. Thankfully it was all clean water at this stage.

I've checked the toilet and it's square. Here are a few photos of the wall and toilet levels. The wall is a lot closer to vertical than the pan is to horizontal.

 

[gazfen]

Get a new plumber in

 

[Madrab]

Oh dear - as suggested - its got to be the frame - the threaded rod that hangs the toilet are aligned by the frame so if the wall's vertical and the rods aren't bent, then the only thing it can be is the frame isn't square to the wall.

Only one way to fix that properly.

 

[dilalio]

The leak was because he pulled too much of the flexi connector waste pipe to make his life easier connecting to the toilet. It disconnected from the outside down waste pipe and was flowing down inside the cavity block. Thankfully it was all clean water at this stage.

I've checked the toilet and it's square. Here are a few photos of the wall and toilet levels. The wall is a lot closer to vertical than the pan is to horizontal.

View attachment 344246View attachment 344247

Well, straight away, it's been packed out too much... Judging by that horizontal bubble!

 

[Madrab]

Well, straight away, it's been packed out too much... Judging by that horizontal bubble!

good spot -

@josip - is that how far out from the wall at the bottom that the pan sits, even without the packing?

 

[dilalio]

The leak was because he pulled too much of the flexi connector waste pipe to make his life easier connecting to the toilet. It disconnected from the outside down waste pipe and was flowing down inside the cavity block. Thankfully it was all clean water at this stage.

If that flexi connector is stretched out, it will retain water and shit in the ribs and this will pile up and weigh it down so it deflects... This will eventually pull it out of the soil pipe or off the pan spigot... I've had loads of these to deal with! Better to use the proper frame pipe connector and rigid pipe!

 

[josip]

good spot -

@josip - is that how far out from the wall at the bottom that the pan sits, even without the packing?

Yes, that's how far it sits out from the wall without the packing.
According to the plumber the packing at the bottom is to prevent possible cracking up above at the mount points later on if the bottom sits out from the wall.
The tiles are at most 3mm off plumb along a 60cm spirit level. So I'd understand that the 30cm high toilet would be 1-2 mm off the tiles if the frame behind was plumb. Here's a couple of pics to try to show how many mm off plumb the tiled wall is.
Underneath is a (somewhat exaggerated) drawing of how I think the frame is inside the wall.