Thin plywood behind plasterboard

[mycke_nu]

Saw a new variant on Bygglov yesterday that raised some questions.

Instead of 12 mm OSB/chipboard behind the drywall, it looked like they used about 6-7 mm plywood.

The cost seems to be about the same as for regular chipboards, but the question is what advantages/disadvantages there are with this, apart from the fact that the boards are obviously easier to handle?

Anyone with some personal experience?

 

[Bergling]

Presumably, it is better to screw into plywood than chipboard.

If you are careless, you can "strip" the screw in a chipboard, which is not as easy in plywood.

 

[mycke_nu]

Yes, of course plywood or OSB is better, but they usually use 12 mm, not 6.

 

[Västerhaninge 17]

If you consider sound comfort, OSB must be better than 6-7 mm plywood

 

[Farzan]

There is unclassified 12 mm construction plywood that is often somewhat cheaper than OSB (at least at Bauhaus and K-Rauta when I've looked). It tends to have some surface blemishes, but that doesn't matter when it's going behind drywall.