Hello
I am planning to mount a plywood board with dimensions 15*1200*600 to two studs where there is drywall in between and then mount the TV, which weighs 37kg.
I am thinking of using 4* 5*70 wood screws on each stud through the drywall, is that too long?
Which wood screws are best in terms of durability and have good heads? mounting screws vs lag screws (most durable but bulky)? It is a gallery TV, so I want to minimize the distance that the heads create. Should I countersink the heads in the plywood or use washers to distribute the force and have furniture pads against the heads to prevent the TV from hitting them?
I am planning to mount a plywood board with dimensions 15*1200*600 to two studs where there is drywall in between and then mount the TV, which weighs 37kg.
I am thinking of using 4* 5*70 wood screws on each stud through the drywall, is that too long?
Which wood screws are best in terms of durability and have good heads? mounting screws vs lag screws (most durable but bulky)? It is a gallery TV, so I want to minimize the distance that the heads create. Should I countersink the heads in the plywood or use washers to distribute the force and have furniture pads against the heads to prevent the TV from hitting them?
Why should you have plyfa?
It was a heavy 77", although I have an OLED that weighs about 23kg, but still seemed like a lot with 37kg.
Anyway, mount with four molly in the plasterboard, if you manage to hit a stud so you can screw into it, you'll have both belt and suspenders there. In my eyes, four molly is sufficient.
Anyway, mount with four molly in the plasterboard, if you manage to hit a stud so you can screw into it, you'll have both belt and suspenders there. In my eyes, four molly is sufficient.
Maybe not the answer you want. But what do you need plywood for? A molly in single-layer drywall can handle quite a lot. See below for the essve table, which includes a safety margin, like all screw joints and similar. A regular medium-sized molly in single-layer drywall can handle 40kg in transverse load. So you're fine with one molly, if you want to be on the safe side, take two :-D or maybe one for each hole as it usually is, maybe 4 in total. That should be enough for about 160 kg.
As long as you want the TV directly against the wall, it's molly-plugs you want. (or directly into the studs if they fit in terms of placement)
They can handle the weight many times over.
You only need the plywood if you're going to have a stand to angle the TV, etc., which means there will be a torque against the wall.
But if you want an answer to your original question: 15mm plywood, 13mm gypsum, and 45mm studs mean that your 70mm screws won't stick out on the other side, but 50-60mm is more than enough.
French wood screws hold best among your options but are *very* bulky and over-dimensioned for what you need. Instead of mounting screws, I would choose regular countersunk wood screws; it's a good choice together with the plywood and doesn't add any bulk.
They can handle the weight many times over.
You only need the plywood if you're going to have a stand to angle the TV, etc., which means there will be a torque against the wall.
But if you want an answer to your original question: 15mm plywood, 13mm gypsum, and 45mm studs mean that your 70mm screws won't stick out on the other side, but 50-60mm is more than enough.
French wood screws hold best among your options but are *very* bulky and over-dimensioned for what you need. Instead of mounting screws, I would choose regular countersunk wood screws; it's a good choice together with the plywood and doesn't add any bulk.