I’m looking to wall mount a 55” TV at home. It’s weight is specified at about 13kg. Will it be fine to only fasten it in the stud on one of the sides? Our walls are regular drywall.
You need to use a tv wall-mount bracket, which can screw into two studs and adjust to match your tv mount points.
If you can’t get a bracket you could attach a length of strong wood to the wall screwed into two studs, and then mount the tv to that wood in at least two points.
I wouldn’t go any thinner than 0.5” (1.3cm). You want to have enough depth for the mounting screws to get some grip.
If you’re worried about the wood being visible, I think another person suggested painting it to match the wall. You could also just paint it black to match the tv.
That seems similar to what I did: a couple 1x6 x40 (about 3/4”) I had laying around, spanning three studs, attached with 3” lag bolts. I painted them white, similar to the taupe in the room. Then I could attach the TV mount centered, and solid (verified by hanging from it, and I’m a big guy).
It is a bit off-center so my old 55” TV meant I could see it from the side on entering the room. I could have made them smaller/shorter to fix that, however it’s cmpletely invisible with my current 65” TV