the flexing will in time cause the laminate to crack or chip on the ends. If you know where the prolem is and avoid it you may avoid a problem but normally a dip will over time cause some sort of damage to the flooring.

If you have a good locking system on the laminate, you will be ok in my opinion. there are specs to what the allowable dip may be and I believe you exceed the limit, but I believe you will be fine. Much of the flex will dissipate in time as the laminate floor will actually conform to it some. I have seen unbelievable flex with laminates that are now many nears old and two things have happened. 1) the laminate did not break down at all 2) Much of the flex is gone...Good Luck

I have pergo laminate flooring. I hope in time it'll warp just a bit with the subfloor but not damage the locking ends. I talked to one of my coworker and he too thinks I should be fine but it's hard for people to determine if they haven't seen it.

Same issue here. What happened with your floor?