Why does everyone use OSB behind drywall?

[Mikael_L]

But if you spend an extra 10,000 on OSB just to be able to mount things, you have to screw in about 5,000 mollys before you break even on that deal

But still, that's not what it's about for me.
I simply want to avoid using a molly at all.

Molly is an absolutely fantastic product, holds up quite well if installed correctly and is cheap.

But personally, I prefer to hammer in a slender thin little nail to hang the cuckoo clock, so I don't end up with what looks like I've glued coins to the walls after I've decided to move the cuckoo clock.

 

[bjolo360]

Oh my, so many responses and opinions on that question

Thanks for all the input, I take the liberty to conclude that OSB is good and preferable (easy to hang up, avoids molly hassle, etc.), but that you actually can use single plasterboard, which might be good to keep in mind if you find yourself in a situation where time and money need to be prioritized.

 

[Mikael_L]

...but you actually can use single-layer plasterboard, which can be good to keep in mind if you find yourself in a situation where time and money need to be prioritized.

Yes, absolutely.
In the "friggebod," I used single-layer plasterboard. (I closed my eyes while screwing it, so I can honestly say I've never seen myself using single-layer plasterboard.)

As I've mentioned earlier, many volume manufacturers of small houses use single-layer plasterboard, so it can't be entirely wrong.

But I personally felt I could afford to have an OSB board behind it.
A chipboard, like the one johan gunverth uses and advocates for, is also completely OK, but it should preferably be a step up from the cheapest quality, and then it becomes more expensive than OSB.

 

[Snailman]

I'm using råspont behind the drywall...

 

[lorens]

I would never build a wall without OSB behind the drywall, the only downside I see with OSB is perhaps the cost of the boards, and maybe that the wall builds an extra 11 mm!

But all the positives outweigh it.
- Attaching things to the wall is super easy and smooth.
- Molly plugs are smart, but damn, so annoying when you've drilled for a molly and hit right on the edge of a stud, then it can't be used and a new hole has to be drilled.
- If I move something that's hung up, a gigantic silvery detail is left in the wall, sure it can be removed, but then a large hole is left.
- When the drywall is to be screwed, just go ahead with the drywall panels, just make sure the seams are staggered!

I would say that only using drywall is just plain cheap! (Damn, I'm going to catch so much flak for this!)

 

[Enk Projektet]

....and I have skipped the gips completely.......

 

[mycke_nu]

Chipboard or OSB (use what you have) on both sides and insulation in all interior walls.

The only alternative is masonry, I hate it when it's noisy.

 

[FredrikR]

Seems to be raining around the country, again..

(by the way, OSB behind plasterboard in the garage I built)

 

[torparnorpan]

I'm going to insulate the garage now and will definitely go with OSB on the walls. I think it's worth it for stability, hanging things, and other points mentioned in the thread. I could never manage with just drywall, but it's personal like so many other choices depending on one's needs, of course.

 

[misingen]

Two camps, for or against. Personally, no simple drywall panels are coming into our house. I need a board behind it!

I would also never dream of naming a possible daughter Molly. It's on par with naming her Britt-Marie after the mean neighbor lady we hated as kids... =)

 

[Mikael_L]

Yesterday I installed a roller blind and two wall lamps in our first finished room. I also installed three air vents in the walls.

Already, I feel that the OSB boards behind the drywall have been very useful. I think it feels like it's already worth 20% of the cost invested.

And eventually, there will be more wall lamps, roller blinds, regular curtain fittings, pictures, shelves, and maybe even a flat-screen TV. So it doesn't feel like there's any risk of regretting it.

 

[pacman42]

I have single-layer gypsum boards in the exterior walls of my 80s house. There's not much material left to attach the new curtain rod to...
...where I renovate the walls, I always use OSB just to solve this problem. Trying to screw something where the drywall is perforated is probably the most frustrating thing there is...


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[Pumba]

We have single drywall in our condominium, but with CC 120!! So there's no stud in the middle of the board, only on the edges, so one wall we have consists of 3 studs and 4 drywall sheets (2 on each side), which I call a cheap solution, and the fact that there's no insulation in the wall at all makes it even cheaper.

That the big construction companies go with single drywall, etc., is only about one thing: building as cheaply as possible to sell as expensively as possible. Their thing is to make money from selling houses, so if you can save on something that's not necessary, you do it. There’s more than just the boards to be paid for when you buy a finished house; someone has to install them, it takes more screws, electrical boxes for double boards, etc., so it entails more costs than just for the boards.

I personally use particle board + drywall for my construction, feels a bit more quality.

When I've been looking at buying used houses, those have been the things I’ve checked. If corners have been cut on things I can easily check, you can also guess that savings have been made elsewhere too.

 

[Kattvovven]

We have single drywall in our condominium, but with CC 120!! There's no stud in the middle of the board, only in the edges, so one wall we have consists of 3 studs and 4 drywall boards (2 on each side) which I call a thrifty solution, plus the fact that there's no insulation in the wall at all makes it even cheaper.

I recognize that, the same as in our apartment, though we actually had studs at cc60 and double drywall, but they had skipped screwing in every other stud. So the first layer was only attached with a screw row in the middle. Now for the craziest part, the kitchen cabinets were hanging on that wall :O

 

[Fotografen]

I recognize that, the same as in our apartment, although we actually had studs spaced at cc60 and double drywall, but they had neglected to screw into every other stud. So the first layer was held up by only one row of screws in the middle. Now for the craziest part, the kitchen cabinets were hanging on that wall :O

Sounds like a typical early 90s construction.