Hello,
I'm renovating the living room and will lower the ceiling by 45mm to install new electrical wiring. Currently, there is old paneling nailed directly to the rafters on cc 90, meaning there is no sub-ceiling. I'm planning to install 45x45 battens and then a tongue and groove panel that is 13mm thick. The question is how should I space the battens? Obviously, I will place a batten on each rafter with the old paneling in between, but I'm worried that might not be enough. Placing a batten between each rafter isn't a problem by itself, but then the batten will only be attached to the old paneling. I would prefer not to have to go around in the attic to add support between the rafters, so my question is if you think cc 90 will work, or if I need to consider another solution?
Lasse
I'm renovating the living room and will lower the ceiling by 45mm to install new electrical wiring. Currently, there is old paneling nailed directly to the rafters on cc 90, meaning there is no sub-ceiling. I'm planning to install 45x45 battens and then a tongue and groove panel that is 13mm thick. The question is how should I space the battens? Obviously, I will place a batten on each rafter with the old paneling in between, but I'm worried that might not be enough. Placing a batten between each rafter isn't a problem by itself, but then the batten will only be attached to the old paneling. I would prefer not to have to go around in the attic to add support between the rafters, so my question is if you think cc 90 will work, or if I need to consider another solution?
Lasse
If it has held before, it should hold again with the same measure.
Otherwise, you can space the battens closer, placing them perpendicular to the rafters. If you can imagine that the new panel will have a different direction than today's.
If it's only going to be electricity, and not spotlights or similar, it should be enough to use 28 mm spars instead of a 45 mm stud.
Otherwise, you can space the battens closer, placing them perpendicular to the rafters. If you can imagine that the new panel will have a different direction than today's.
If it's only going to be electricity, and not spotlights or similar, it should be enough to use 28 mm spars instead of a 45 mm stud.
I think the same way, it has worked for over 50 years so it should work now as well. Unfortunately, the direction cannot be changed because the panel in the adjacent room goes the same way 
Spotlights will be installed, so it has to be 45x45, otherwise, gles would have been better. Thank you for your answer!
Lasse
Spotlights will be installed, so it has to be 45x45, otherwise, gles would have been better. Thank you for your answer!
Lasse