Can a concealed cistern be installed on a single solid wall?

[colonel_burton]

Hi guys and girls

First time poster here. Bathroom location is 1st Floor. Can a chased in brick concealed cistern be installed where the current toilet is or even swap with the sink and go under the window instead? This wall is a single solid wall (non cavity) and on the other side of the window is an extension, so there is a possibility to support/build up wall outside if required for things like insulation. This wall is load bearing as it is the back of the house. Would I need a lintel?

And is this ok for a DIYer or professionals only? Any advice appreciated.

Thank you kindly in advance.

 

[Madrab]

Can't go where the basin is just now as there's a bath in the way .

Can it go into a single brick supporting wall, I would suggest that more than a lintel may be needed if considering that. Possibly a metal frame to allow the weight to be transferred around and then back down properly. That would be more for an engineer than anyone on the plumbing forum I would suggest.

 

[colonel_burton]

Can't go where the basin is just now as there's a bath in the way .

Can it go into a single brick supporting wall, I would suggest that more than a lintel may be needed if considering that. Possibly a metal frame to allow the weight to be transferred around and then back down properly. That would be more for an engineer than anyone on the plumbing forum I would suggest.

Thank you. That's very helpful. Will probably just re-tile everything and get some new units.

What do you think about a wall hung sink without a pedestal? Would that put too much pressure on the window sill? I have been unable to find much info around this setup.

 

[Madrab]

A floating basin without a pedestal would probably be ok as long as you weren't planning to swing or lean on it too much.

 

[colonel_burton]

A floating basin without a pedestal would probably be ok as long as you weren't planning to swing or lean on it too much.

Thanks again. Very good of you to take the time to respond. Appreciated.

 

[cdbe]

It is possible. You need a slimline cistern, the opening is fairly narrow so a small lintel, either single leaf steel or concrete, will be fine.

This is a floor standing WC so just the cistern in the wall (9" solid wall):

This one is a wall hung, in a cavity wall, so a bit more involved:

If you do fit one of these, make sure you relocate the isolation valve (see first image) from outside the cistern to the inside of the cistern before you tile it all over - all the contents of the cistern are accessible through the flush plate except the iso valve which comes fixed to the outside - with no access once tiled.

 

[Madrab]

I would still be looking for an engineer to comment on the long term viability of cutting into a single course load bearing wall without a full frame being installed.
Wouldn't ever take the chance with the external structure like that without a professional qualifying what would be needed to support it properly.

Seen enough problems in my time with DIY work gone wrong on external walls where proper support wasn't added for new additions and subsequent cracking and sagging.

Not saying it can't be done, would just want a pro to specify what would be needed. If they specify a robslee or steel then fair enough.