Hello!
We are just about to start with the first room on the upper floor and have the following questions.

If you remove the plasterboard from the ceiling of our 1940s house, you will find wood paneling, and on the other side of the wood paneling, you will find chip insulation, roof trusses, and the cold attic.

We are thinking of installing a vapor barrier on this wood paneling in the ceiling (on the warm side of the room) and nailing furring strips to make room for electrical and internet wiring and recessed ceiling boxes. Gypsum board will then be screwed onto the furring strips.

Currently, there are no boxes in the ceiling; instead, VP conduits are run crisscross over the attic. Where a ceiling lamp should hang, the VP conduit peeks out through the ceiling, and next to it, there is a separate hook screwed in. It doesn’t feel particularly luxurious.

I don't like the cabling over the attic, and I would like real, recessed ceiling boxes with lamp sockets and hooks.

The thing is, there is just under 240 cm in ceiling height, so I want to lower it as little as possible!

So the big question is how little can you lower the ceiling without upsetting the electrician?

Best regards,
Carl-Johan
 
22mm, can make a notch for the ceiling boxes...
 
If I interpret the answer correctly, I choose 22 mm glespanel and then standard gypsum, which together amounts to 35 mm?
 
carl-johan said:
If I interpret the answer correctly, I choose 22 mm sparse panel and then standard gypsum, which in total becomes 35 mm?
Yes, that should work...

But as always, you should check with the electrician so he doesn't have a bad day:S

I have myself used 22 mm spars and installed a low ceiling box, without problems. The pipes are usually 16 mm.
 
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