[Jon]

Here is a photo of another job where there is subfloor movement due to moisture
I don't think those bubbles will never lay flat again as the particleboard will not shrink back to the orginal size when it dries out

[TNT]

Originally Posted by Jon

Here is a photo of another job where there is subfloor movement due to moisture
I don't think those bubbles will never lay flat again as the particleboard will not shrink back to the orginal size when it dries out

Those won't go down.

Tia

[framer52]

paticlar board when wet, never goes back to original size again. Regular wood does.

I am not sure of the science of this, except I believe it has to do with the glue.

i would assume that is why we are instructed to never lay it over particle board......