ᐅ Installing flush-mounted electrical boxes: recessed or with spacers

Flush-mounted switch boxes as well as flush-mounted junction boxes are always set slightly recessed so that after plastering, the boxes align as closely as possible with the plaster surface.

Switches and sockets belong inside the flush-mounted box, not mounted directly onto the plaster.

Instead of the cover suggested here, the traditional method of stuffing crumpled newspapers into the boxes can also be used. Even if the boxes are hidden beneath the plaster, they can still be detected through the plaster—unless the plaster is applied very thickly.

Set them back a bit, because otherwise you’ll have to replace the supplied device screws with the longer version for every junction box.

The extra material cost is minimal, but it avoids unnecessary fiddling. Your electrician would hate you for it 🙂