Change a concealed fitting

With concealed fittings, things look neat and stylish, but often difficult to carry out repairs. Above all, if such a recessed fitting is to be completely replaced, one is faced with the problem of whether the entire wall has to be pried open. In some cases you can work around this.

How can a concealed fitting be changed?

If a fitting is under the plaster and only the control elements protrude from the wall, it is visually attractive and saves space in the shower cubicle. But when functional problems arise and you have to get to the inside, the hurdle is increased.

In the case of repair work, for example when the cartridge and seals need to be replaced or when the lever handle is restored, it is usually not a major problem to get to the relevant points. Because even with concealed fittings, the inner body is usually accessible by simply dismantling the lever handle or the two rotary handles. The removal of the cartridge, the replacement of seals or the greasing of the handle mounts then usually work in the same way as with exposed fittings.

However, if the entire fitting needs to be replaced, there are actually only two options:

  • There are suitable conversion kits from the manufacturer
  • Otherwise: pry open the wall and reconnect completely

If the fitting is only to be modernized for reasons of style, there may be the option of replacing it with a newer model from the same manufacturer within the old concealed body. Some manufacturers offer corresponding conversion kits for certain armautre model lines. A quick conversion is then possible by simply dismantling the pull knob, lever handle, rosette and cartridge and inserting the new components, if necessary with adapter pieces.

The only important thing is that the models match: The old fitting must therefore offer a suitable "base" for the new one. However, the manufacturer has corresponding compatibility lists.

If you are not lucky enough to have suitable retrofit models for the old fitting (which you will also like), all you have to do is pry open the wall to connect a new fitting to the internal water connections.

Repair as an alternative?

If the old concealed fitting only shows functional impairments and you actually still like it optically, a repair is still an alternative. As described above, access to the inner workings with the core, the cartridge, is usually not complicated. And changing the cartridge and / or seal can certainly eliminate leaks or jet impairments.