laminate flooring in a modular?

If its a bounce or movement between joists, you need to correct that by adding a brace under that section or adding another sub flooring atop to stiffen it.Be more concern with a flat floor rather than a level floor. You d feel it being out of level to much to effect it.

Then use the normal foam type under layment as normal..Don t go the 99 cent laminate specials.. Get a decent product, preferably one with a warranty of some sorts.If you need to know some preferred brands I ve worked with and prefer, just e mail me through my avatar.

I ve attended several installation seminars as well as installed several 100,000 s/f of laminate.. GL

Laminate will be fine, just install as normal. Just use the foam rolls they sell as underlayment. I would strongly recommend a floating floor, not a nail down or glue down type. I have used several of the click together brands and they all work well.