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Flush-mounted toilet frame for a wall made of aerated concrete

Kons18 19044 13
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 17376811
    Kons18
    Level 12  
    Hello. Please share your experiences regarding the installation of a flush-mounted frame in a wall made of aerated concrete. I have a rather narrow bathroom, and I would like the bowl to hang flush with the wall, i.e. there should be no "shelf". I know that heavy-duty racks are used for this purpose, but I have not found any with a thickness of less than 10 cm. The point is that the toilet will hang on a load-bearing wall with a thickness of 24 cm and I would like to forge as little as possible in it. Has anyone used a frame for light construction (there are so-called slim with a thickness of only 8 cm) for installation in a wall recess?
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  • #2 17377870
    mawi2
    Level 27  
    Hello, I've had one with a wheel for 5 years, the whole set. Similar problems small bathroom. I don't see any problems. A friend has the same set - failure. The difference in assembly professionals - I do not have the cheapest professional - he has the most important price. And there are effects. Talk to the installation team. 8 cm deep will there be no problem with the drain? Let them speak.
  • #3 17377988
    Kons18
    Level 12  
    There will be no problem with the drain - it is behind the wall in the garage. I do not know if I have not outlined the problem well, so I will write again: I am going to carve a niche in the wall of 24 cm of aerated concrete to the depth of the thinnest frame (8 cm) for lightweight construction and insert it in this niche (flush with the wall). Has anyone done that?
    PS There are no professionals - I do it myself.
    Regards
  • #4 17378063
    gimak
    Level 41  
    Kons18 wrote:
    Hello. Please share your experiences regarding the installation of a flush-mounted frame in a wall made of aerated concrete.

    I'm a bit different. I have a built-in cistern in a similar way and it is very practical until it works well. The stairs start as something inside collapses and access is illusory. At present, I would not opt for such a solution.
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  • #5 17378255
    Parowy
    Level 22  
    hello,

    gimak wrote:
    ...and access is illusory.


    If you have a decent, company-owned frame, you can replace the entire contents of the cistern through the hole for the button, others also only with greater problems.

    The Tece company produces 8 cm thick frames, they are wider but thinner, e.g.
    https://www.termicotychy.pl/stelaz-podtynkowy...MIoZWBqdPk3AIVBqmaCh2x2AmCEAQYASABEgKQDPD_BwE

    As for me, a regular frame will also work for such a structure.
    The issue of developing a method of building the face of the frame. In fact, it would be enough to cover the entire wall with a plasterboard, glued to the wall and screwed to the frame structure.
  • #6 17390165
    ewoo
    Level 30  
    No problem with building in the wall. You forge the recess depending on the thickness of the frame and assemble it as follows:
    - if you have a plastered wall and a plasterboard will no longer be placed on it, you must mount it so that the face of the frame is deeper than the face of the wall by 2.5 cm, because then you cut 2 plasterboards to the size of the recess, screw them to the frame and you have an even wall to be tiled . There are to be two plasterboards on the frame, not one
    - if there are to be plasterboards on the wall, you must first determine where the face of this board will be and mount the frame deeper by about 2.5 cm, then you cut one board to the size of the recess and screw it to the frame, and cover the whole with the wall with the other. there must be no free space between the plates.
    - you fasten the frame solidly, in the recess it is best to use the upper handles on the pins drilled to the other side of the wall. I also did it this way: at the top of the frame I screwed a piece of a 50x30 closed profile horizontally so that it protruded on both sides by about 15 cm, I forged grooves under it in the wall and after inserting the frame into the wall and setting the vertical, horizontal, depth, cement CX 5 I fastened these protruding ends of the profile in the wall. That's what I did when it was impossible to put a pin through a wall or in a wall made of ceramics where each expansion bolt does not hold.
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  • #7 17390330
    Kons18
    Level 12  
    Thank you all for your advice and suggestions. I managed to buy a narrow (8 cm) rack for heavy construction, i.e. for walling in the Cersanit Slim&Silent model. I will be mounting it today. If I have time, I'll try to report how it turned out.
    Regards.
  • #8 17393315
    paul0
    Level 15  
    For anchoring heavy things, it is worth using a threaded rod glued onto a two-component anchoring resin instead of pins.
    The resin is in such tubes as silicone, there are 2 components in the tube, a disposable mixer is screwed on it.
    If the wall has voids, a mesh sleeve is inserted into the opening, resin is introduced into it, and then the rod is embedded in it.
    If it is aerated concrete, it is worth "breaking" the hole so that it has the shape of a cone, with the top facing the face of the wall. Then the fixation will be stronger.
    Before anchoring, the hole should be thoroughly cleaned of dust.
  • #9 17393323
    ziemek56
    Level 22  
    paul0 wrote:
    Before anchoring, the hole should be thoroughly cleaned of dust.
    [quote="paul0"]
    BLOW OUT, of course, not with your mouth, but it will force all the dust out. You will always find some diving center and get compressed air with the right regulator.
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  • #10 17393342
    paul0
    Level 15  
    It does not have to be a diving air cylinder.
    Even a compressor with a 24l tank is enough
    and a blow gun with a long nozzle.
    Blow it out, brush it clean and blow it out again.
  • #11 17393787
    Felini
    Moderator
    Kons18 wrote:
    I intend to carve a niche in the wall of 24 cm of aerated concrete to the depth of the thinnest frame (8 cm) for light construction and insert it into this niche (flush with the wall). Has anyone done that?

    I did exactly the same, cellular concrete 24 cm, cut out a niche for the cistern (Geberit Duofix 12 cm deep) and cover it with fermacell gypsum fiber board. It looks like that on the surface of the wall there is only a flush button and a suspended bowl, no walls, faults, depressions. The cistern has been operating without failure for about 10 years, access to its fittings is sufficient. Before laying the plate covering the cistern, all empty spaces were filled with mineral wool in order to dampen the noise of the cistern operation.
  • #12 17398926
    ewoo
    Level 30  
    The resin is absolutely ok, I liked the Ceresit CX5 mounting cement. Sets in 3 - 5 minutes. It can be used in a liquid form, I installed the railing pipes in the holes drilled in the floor and, after inserting the pipes, I poured CX 5 diluted into a liquid mass into the remaining gap. After 5 minutes, it's not moving. Today it's been over 8 years and it won't budge. I'm not advocating, just letting you know that it is.
  • #13 17398964
    William Bonawentura
    Level 34  
    Kons18 wrote:
    There will be no problem with the drain - it is behind the wall in the garage.


    It's the perfect situation. Mount the bowl on pins directly to the wall and place the cistern on the side of the garage.
  • #14 17399008
    ewoo
    Level 30  
    William Bonawentura wrote:
    Kons18 wrote:
    There will be no problem with the drain - it is behind the wall in the garage.


    It's the perfect situation. Mount the bowl on pins directly to the wall and place the cistern on the side of the garage.


    I did something similar. Frame for light construction in an 8 cm wall. From the side of the bathroom, the wall was even, on the other side there was a boiler room and there the frame protruded from the wall. The roofer built it there with a plasterboard and covered it with tiles. It turned out ok.

Topic summary

✨ The discussion revolves around the installation of a flush-mounted toilet frame in a wall made of aerated concrete, specifically focusing on the challenges and solutions for narrow bathrooms. Users share their experiences with different frame thicknesses, emphasizing the use of an 8 cm slim frame for lightweight construction. Recommendations include using reputable brands like Tece and Cersanit, and techniques for securely anchoring the frame, such as using threaded rods with two-component anchoring resin. Participants also discuss the importance of proper installation to ensure functionality and access to the cistern, with some users successfully implementing similar setups for over a decade without issues.
Generated by the language model.

FAQ

TL;DR: Slim frames as thin as 8 cm exist; "If you have a decent frame, you can replace the entire contents." Use proper anchoring and face finishing with plasterboard for a flush bowl in aerated concrete. [Elektroda, Parowy, post #17378255]

Why it matters: It helps DIYers and installers mount a flush, reliable concealed WC in aerated-concrete walls without a bulky shelf.

Quick Facts

Can I mount an 8 cm slim WC frame flush in a 24 cm aerated-concrete wall?

Yes. Users report successful in-wall installs in aerated concrete. Frame anchoring and face finishing are key. One pro noted, “No problem with building in the wall.” Set levels, tie the frame, and finish flush. [Elektroda, ewoo, post #17390165]

Which frame type works best for a recessed install—heavy-duty masonry or light-construction?

Slim heavy-duty frames at 8 cm exist and fit niches. A regular frame also works when anchored and faced properly. TECE offers 8 cm units, wider but thinner. Choose trusted brands and plan face build-up. [Elektroda, Parowy, post #17378255]

How deep should I set the frame and how many boards go on top?

If the wall stays plastered, recess the frame about 2.5 cm. Then screw two plasterboards to the frame. If the whole wall will be boarded, recess similarly and use one in the niche. Ensure no voids between boards. [Elektroda, ewoo, post #17390165]

Will maintenance access be adequate with a concealed cistern?

With reputable frames, you service through the button opening. “You can replace the entire contents” via that access. Ensure the service opening aligns and remains unobstructed. This keeps repairs feasible without opening walls. [Elektroda, Parowy, post #17378255]

What’s the main failure risk with concealed WC frames?

Hidden cisterns work well until internal parts fail. One user warned that “access is illusory” when something collapses inside. Plan for support and parts availability. If access worries you, avoid full concealment. [Elektroda, gimak, post #17378063]

How do I fix the frame securely in aerated concrete?

Use threaded rod with a two-component anchoring resin. Add a mesh sleeve if the wall has voids. Shape the hole like a cone for stronger pull-out. Clean the hole thoroughly before injecting resin. [Elektroda, paul0, post #17393315]

Do I need to blow out drilled holes before anchoring?

Yes. Blow out dust, brush the hole, and blow again. A small compressor with a 24 l tank works. Use a long-nozzle blow gun for reach. [Elektroda, paul0, post #17393342]

How do I mount an 8 cm slim frame flush? (3-step How-To)

  1. Forge the niche and set the frame face about 2.5 cm behind the wall plane.
  2. Anchor the frame using upper brackets into the opposite side, or a 50×30 profile fixed with CX5.
  3. Cut boards to niche size and screw to the frame; keep surfaces flush. [Elektroda, ewoo, post #17390165]

How can I reduce flushing noise from a concealed cistern?

Fill the cavity around the cistern with mineral wool. It damps operating noise without blocking service access. One setup ran about 10 years failure-free using this approach. Gypsum fiber board like Fermacell provides a rigid skin. [Elektroda, Felini, post #17393787]

Are there slim frames under 10 cm?

Yes. TECE slim frames are about 8 cm thick. They are wider but thinner overall, suiting tight niches. Confirm bowl compatibility and mounting height before cutting. [Elektroda, Parowy, post #17378255]

Can I put the cistern on the garage/utility side and keep the bowl flush?

Yes, when the other side is accessible. Mount the bowl on wall pins and place the cistern in the garage. The bathroom wall remains flush, and service becomes easier. Plan water and flush piping routes. [Elektroda, William Bonawentura, post #17398964]

Is quick-setting cement like Ceresit CX5 useful for fixing brackets or profiles?

CX5 sets in 3–5 minutes and cures strong. It locks profiles or posts in drilled holes. One installation has held for over eight years. Mix to a pourable mass and work quickly. [Elektroda, ewoo, post #17398926]

Does installation quality really matter?

Yes. One user enjoyed five years trouble-free with a quality installer. A friend’s identical set failed due to choosing only the cheapest service. Assembly quality determines results more than price. Prioritize alignment, anchoring, and sealing. [Elektroda, mawi2, post #17377870]

Will an 8 cm frame leave enough room for the drain?

Slim frames are wider to preserve drain clearance. Verify your outlet path before cutting the niche. Check trap and bend clearances against the frame specification. Ask installers to confirm the drain alignment. [Elektroda, Parowy, post #17378255]

Can a light-construction frame work inside a wall recess?

Yes, with smart layout. One setup used a light-construction frame in an 8 cm wall. The frame protruded into a boiler room and was boxed there. The bathroom side stayed perfectly flush. [Elektroda, ewoo, post #17399008]

Any slim heavy-duty frames people installed successfully?

Yes. One user installed an 8 cm heavy-duty Cersanit Slim&Silent frame. They aimed for a fully flush bowl on a 24 cm wall. Slim masonry-rated frames are available and workable. [Elektroda, Kons18, post #17390330]
Generated by the language model.
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