Only single drywall on interior wall?

[shadowfire]

I have searched but haven't found an answer to this specific question, only for kitchens or bathrooms where heavier items are to be hung on the wall.

I have building materials delivered for two rooms that are to be renovated and I had planned to plaster directly on the old interior walls (plywood), but have now changed the plan and will tear down the old walls, extend them, and add insulation instead. The downside is that I have only ordered plaster - no OSB or plywood or anything else.

So I have the following options:
1) Extend the walls and just plasterboard with single plaster, live with it.
2) Extend the walls, order plywood and incur additional shipping costs, but get more durable walls.
3) Extend the walls, double plasterboard, and finish one room first.

The two rooms are a study and a bedroom. I have no plans to hang a plasma TV or anything else, just a few pictures, some shelves, etc. Single plaster should hold with plugs for that, right? Am I being penny-wise but pound-foolish if I just slap on single plaster?

 

[Stefan N]

Alt2: It's worth it every time.

 

[slacker]

I think it's worth it - Use exclusively OSB/Plyfa and 6.5mm ROT plasterboard. Durable walls that can support shelves, paintings, and such.
I also mostly use 90 boards and 45 framing for increased stability and easier handling of sheet materials.

 

[shadowfire]

Alright, leaning towards ordering another crane truck then.
Thanks for the input!

 

[maxbygg]

I think single-layer plasterboard is sufficient, I've had heavy items hanging on plasterboard anchors without any problems. And if you need to hang really heavy things, you can reinforce a bit or add some noggins.

 

[andersmc]

Well, single plasterboard directly on the studs must be the most common solution, and most people manage just fine with it. To hang pictures, you really don't need anything behind the plasterboard; a small white place hook is sufficient. If it's heavier items, you either need to find the studs behind the plasterboard or use an expander (like a Molly bolt). How much does a flat-screen TV weigh? About 10-15 kg, maybe. Even such a weight can be hung with plasterboard expanders.

 

[Ola78]

Sure, it's a common solution with just single drywall, but it's really nice to avoid having to deal with lots of anchors or looking for studs every time you want to hang something heavy on the wall. If you have råspont, OSB, or plywood, you can avoid this, and it's actually worth quite a bit. When you're trying to hang something heavy on single drywall and realize you don't have any anchors at home, you curse the decision to be cheap during construction, with sheet just screw and go. Just don't use particle board, as it results in the hole crumbling after screwing once and it becomes difficult to get a new screw to hold well.

 

[joflopp]

As usual, I recommend Fischer UX plugs. I recall that the UX-8 has a maximum load of 16 kg perpendicular to single drywall, calculated with a safety factor of 3. It would take quite substantial items for this plug to not suffice.

 

[shadowfire]

As usual, I recommend Fischer UX plugs. I recall that UX-8 has a maximum load of 16 kg perpendicular to single plasterboard, calculated with a safety factor of 3. It would take quite significant things for this plug not to suffice.

I'm getting all indecisive when I read your answers. After all, I don't have any plans to hang anything heavy and I don't think I will in the future either. However, maybe the next family moving in will want to, but I'm wondering if a lot of work with OSB panels for another family is worth it. In that case, I could just give them a bag of UX plugs instead. Right now, I'm leaning towards single plasterboard again. :wow:

 

[joflopp]

And how does the new family know that there is OSB behind the gypsum?
UX-plug can be found everywhere and doesn't cost much. Everyone should have a couple of sets at home.

 

[slacker]

And how does the new family know it's OSB behind the gypsum?
UX plug is available everywhere and doesn't cost much. Everyone should have a couple of sets at home.

joflopp - I'm starting to think you have a commission on UX plugs!
But it's moving up a weight class - Then it was 10kg!

http://www.byggahus.se/forum/badrum/132281-expanderplugg-i-badrum.html

 

[joflopp]

If only that were the case. Unfortunately, I even have to pay for them.

I quickly googled for the mounting guide they released with all the tables. Now it seems to handle 16 kg, either I read it wrong last time or they've upgraded the rating.

Edit: In the previous guide, I recall that different sizes of the plug had different values. Now they all have 16 kg as the value for a single gypsum board and 25 kg for double gypsum.

 

[slacker]

I'll make sure to try a box at some point - Quite tired of plugs in general since most of them leave nasty marks in plasterboard. But considering the damage Molly causes, it's probably a good alternative. You should be able to push it into the wall when you're tired of it.

I’m annoyed with Molly and the craters they leave when you want to remove them. I usually use a larger drill to bore away the edge and push them into the wall, then fill it over with putty. Recently, I've realized it's easier to cut these out with a hole saw and then replace them with a similar plug from equivalent plasterboard and block behind with putty as a result.