Thickness of electrical boxes

[plymen]

Hello!

We have purchased a house that includes a recently constructed "friggebod" built as a timber frame house.

I'm planning to insulate it with 120 mm insulation (the outer wall currently consists of horizontal paneling + wind barrier and 120x45 wooden studs), vapor barrier, 34 mm battens, and then vertical 15 paneling.

I plan to do the carpentry work myself and then hire an electrician.

My question is, is a 34x45 batten sufficient when you screw in nogging between the battens to which you then attach the electrical boxes?

Thanks in advance!

 

[Tompafix]

Hello!

We have bought a house which includes a recently built "friggebod" constructed as a timber-framed house.

I plan to insulate it with 120 mm insulation (currently, the outer wall consists of horizontal cladding + windproof paper and 120x45 timber studs), vapor barrier, 34 mm battens and then vertical 15 panel.

I plan to do the carpentry myself and then hire an electrician.

My question is, is a 34x45 batten sufficient, securing it with braces between the battens where the electrical boxes are attached?

Thank you in advance

Of course, there are boxes that are low-profile. Otherwise, you can usually press them into the insulation behind. But if you make an installation wall with 45x45, then a standard 58 mm electrical box fits. Made for 45 plus 13 plasterboard. Then 45mm insulation also fits in that wall.

 

[David-O]

Have you found 34mm insulation?
Standard box for single plaster is for 57mm.
It's probably not a disaster to press in a centimeter into the 120 insulation, but is 11+11mm worth it?

https://www.elko.se/kopplingsdosor/kopplingsdosa-enkelgips-article1289-510.html

 

[David-O]

And by the way, why kortling?
Mount in the long rule where possible.

 

[plymen]

Thank you for the quick reply.

Isn't there a risk of damaging the plastic when you let a 58 mm device box press against it?
Want to keep the frame dimensions down to get more floor space.

Or is it smarter to have 45 x 45 spikläkt where you can also fit in 45 insulation?

 

[David-O]

Of course, you should have insulation in the installation layer, that's what I assumed. I don't think a building film (plastic) will get damaged, it's sturdy, but you might get air pockets in the insulation. Although maybe not if you press in 45 insulation with 34 studs though . Ah, just go for it, it'll probably be fine.

 

[Tompafix]

Thanks for the quick response.

Isn't there a risk of damaging the plastic when you let a 58 mm device box press against it? I want to keep the stud dimension down to get more floor space.

Or is it smarter to have 45 x 45 nail batten where you can also press in 45 insulation?

If you use 45mm insulation, you eliminate thermal bridges as mentioned. But if you want to save floor space, you can skip the 34x45 and place the electric in the 120mm stud. That's how my whole house, a '78, is built. You only save 0.000484m2 by choosing 34mm compared to 45mm.