Lantley wrote:
Soft spots typically don't occur instantly but they develop over time.
By the time a unit has mutiple soft areas the warranties have expired and the manufactures'are off the hook.
Leaving the unsuspecting buyer holding the soft floor bag. That tale repeats itself many times.
Softspots that develop are due to not thick enough subfloor.
Buyers insist on huge lightweight RVs that they can tow with a lawn tractor and they want it CHEAP.
The manufacturers responded to what the BUYERS want, they had to cut weight and quality to fit what consumers want.
You can't have lightweight, quality and cheap all rolled up in one package.
Instead of telling folks to avoid composite floors, tell them to check how thick the subfloor is as that IS where the problem starts.