I am moving into an apartment where I want to have 2 wall lamps on a concrete wall in the hallway. Chasing is not allowed. I am considering gluing on plasterboards and then laying the electrical cable in grooves.
Could someone kindly provide some comments on whether this is a good idea, is 12mm gypsum too heavy? If 6mm is used, can double boards be glued to make room for the electrical cables? And so on...
Are the plasterboard walls furred?
Then you can make a hole by the lamp and either at the baseboard or the ceiling molding and fish through EXQ cable or flexible conduit inside the wall.
Can/should the lamp be mounted over a box?
edit:
Oh, sorry, it did say concrete wall ...
Yes, then it's probably surface-mounted clamped cable that's applicable or possibly, as you wrote, a groove made with drywall ...
There are no problems, just find a suitable glue, it can be a bit of anything, but of course not epoxy, wood glue (white glue), or cyanoacrylate glue to name a few examples.
But some kind of adhesive.
You need an adhesive strength of a mere 10-15 kg/sqm, and many adhesives are 1000-10000 times stronger. Or for example, Tec 7 which can handle 270,000 kg/sqm ...
Your problems will instead be two others, how do you protect the electrical cable?
How do you avoid the wall cracking at the seam?
edit:
I think there are others here who are better at suggesting a good glue.
Thank you, Mikael, appreciated. Good follow-up questions you asked, I'm very unsure about both questions. My thought is to try to get some input on how and if things are going, to prepare everything so an electrician can pull the wires.
1. I had hoped that plaster over grooves and walls would suffice, but do you have any experience where it might crack? Can you use something rougher than plaster, such as mortar?
2. Now, excuse my ignorance, but I also hoped that the wiring could be run through some sort of conduit that is narrower than 12mm. Do you have more knowledge here Mikael?
