Fitting a washbasin

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Fitting a washbasin like a plumber

You don’t have to be a plumber to fit a new washbasin. You can do it on your own in just a few steps.

Fitting a washbasin
Fitting a washbasin
Fitting a washbasin


Before purchasing a new washbasin, you should make a checklist of all the important dimensions. The list should include the dimensions of the old washbasin, the distance of the washbasin drain from the wall and the position of both angle valves. As a general rule, you should take accurate measurements rather than rough estimates. It is advisable to obtain a complete installation kit from the DIY store for the installation work that will be required later. It consists of fixings, hanger bolts and collar washers for protecting the ceramic surface.


Shut off the main tap and/or angle valves before installation.


Insert the hanger bolts into the wall. Slide the washbasin first, then the flat washers onto the bolts and tighten the nuts firmly.


Insert the fitting with the seals into the washstand from above. Tighten the lock nut from below.


Then connect the pipes of the fitting to the angle valves and connect the syphon.


Seal the gap between the washbasin and the wall with sanitary silicone. Once this has hardened, check again that everything is fitted tightly and is leakproof.

Legal note

Bosch does not accept any responsibility for the instructions stored here. Bosch would also like to point out that you follow these instructions at your own risk. For your own safety, please take all the necessary precautions.


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