Plywood without gaps

[Lego Pusselsson]

I have read afterwards that there should be a 3mm gap between plywood when building a wall. I have pressed them together tightly, they are 12mm thick. I'm going to put gypsum on top. Will this have any consequences, what can happen? Do I just have to unscrew and redo it or can I be at ease?

 

[Screew]

Is it a lot of plywood? I wouldn't leave it without gaps, it's unfortunate if it starts creaking and all, but if there's already plywood, I would have used a circular saw in the seams, then you'll get at least more than 2 mm.

 

[Lego Pusselsson]

Is it a lot of plywood? I wouldn't leave it without gaps, it's unfortunate if it starts creaking and all, but if there's already plywood, I would have used a circular saw in the joints, then you'll at least get something more than 2 mm.

It's just one wall, so 5 joints. Smart idea with the circular saw, I should probably try that! So the consequence is a creaking noise.
Should there be gaps between the gypsum boards as well? The gypsum is 12mm thick.

 

[Screew]

It's just one wall, so 5 joints. Smart idea with the circular saw, I might try that! So it's the creaking sounds that are the consequence. Should there be a gap between the gypsum too? The gypsum is 12mm thick.

When plywood expands, it has to go somewhere, which usually causes creaking, etc. Gypsum is inert, so I do it edge to edge. But if it's only 5 joints, it might be worth taking it down and doing it right.