Warped Floor Defective or Damaged?

NMHMADISON

My 2020 Tab 320 has a mild but significant floor warping issue that occurred only after 3 years of proper storage and winterizing. My dealer has no ideas of the actual causes or cost to repair in Madison, WI. Nucamp has refused to cover this as it’s passed the warranty. Needless to say, I will not purchase the newer Tab 360 I planned on upgrading too.
Any ideas as to what caused this ?

AnOldUR

Earlier models (before 2018?) had a plywood floor that could get water damaged. Here's a cross section of our 2020 320S. I think it was 2021 that went to a full composite floor. I'll be interested to hear what others have to say. Our floor is still solid after over 60K mile with many heavy rain storms.

MuttonChops

Pictures and more details on defect location(s) could be helpful.

There has been No Wood in TAB floors for many years so 'they don't warp like plywood'.

Some owners have reported issues with poor vinyl floor covering backside adhesive failing that can cause bubbles and bumps. Others have noted high traffic area soft spots . . . this is most comment on the earlier no wood composite floors due to the internal foam getting compressed.

Additionally, with the earlier composite floors, no data on the newest model years, water can get into the foam itself due to seams leaking {newer models eliminated several seams}. When the foam gets water soaked "it gets very heavy" and the typical failure is for the floor to drop/break along the center seam (above axle), the heavy floor then rests on the axle. Well tanks bolted to floor bottom rest on the axle. Once the water soaked foam is dried out all-is-well except the floor has dropped some half-inch along the axle.