OSB behind drywall

[salkin00]

We have bought an LB-house (frame-mounted) and will start by taking down the gypsum to put OSB behind it. Now we have heard that it could be risky because there is a chance the gypsum might crack as the wood moves. But many (most) have this construction from the start so it shouldn't be that risky, right? Anyone with experience of either??

 

[cust3000]

I always put OSB behind drywall, then I tape the joints between the drywall sheets when I spackle.
It has never cracked for me anyway.

 

[Lypsyl]

I don't think there's any harm in putting OSB behind, I've been involved with stick-built houses and we've used OSB then...

 

[salkin00]

Glad to hear. Feels like there was something else that caused it to crack in that house, settlement???

 

[prototypen]

But ideally, you should not have the joint between the boards lining up with each other. You can start with a half-board.

Protte

 

[sixten88]

The risk that exists is that long walls have a tendency to warp. However, this risk does not exist in small houses. This is the reason why OSB is no longer used as wall constructions by the leading gypsum suppliers.

 

[daviden]

Is the plaster already installed? It seems laborious to take it down...

 

[prototypen]

Tearing down plaster is fine but it gets messy.

Protte

 

[salkin00]

Thank you for all the answers.

Yes, the gypsum is already there, but it wasn't possible to have either OSB installed at the factory or to have them deliver the gypsum on the side. So this was the only option, and we agreed that we wanted OSB behind...

 

[ferd123]

what many people don’t consider when installing OSB is that the boards are 1197mm wide instead of 1200mm like, for example, chipboard.
OSB plywood should be installed with a 3mm gap as a movement joint.

 

[Yrrol]

typically, I think I've got them edge to edge now (osb)... will the wall explode?

 

[ferd123]

typically, I think I've got them edge to edge now (osb)... will the wall explode?

usually goes well! but where problems arise is when you set longer walls or have it in a summer cabin that is not heated during winter.

 

[J.B.]

Putting on another layer of drywall is much easier than tearing down drywall to install OSB and then drywall again.

 

[prototypen]

But now OSB + plasterboard has certain advantages compared to double plasterboard, so if the house factory is "wrong," it's just a matter of redoing it.

Protte