I wonder if anyone read the FMCA's RV Doctors response to the member who reported a spongy floor in his rigs kitchen between the stove and refrigerator?
Op stated the tech found delamanation in the sub floor in that small area but did not find any leaks. Something caused it and we know it is not spontaneous so a leak is most likely especially considering the location of the problem.
Based on my understanding of the DR's response I have JMHO to offer. I do feel sorry for the member if he takes the suggestions from the Dr. to heart.
The suggestion was to place a plywood sheet over the original sub floor completely, suggesting that the slides might have to be adjusted to accommodate the increased finished floor height.
IMHO nothing could be more wrong for a small area of delamanation. The Dr. mentioned removal of all the carpet and flooring on a three year old coach.
He did not seem to consider how much work would be involved or the expense he was suggesting to cover the ninety percent of the floor that was just fine.
The slides would have to be more than adjusted. New rollers would probably have to be installed.
What about the appliances and Washer Dryer unit? Likely they would have a problem removing them if it ever became necessary.
Possible R & R of the toilet and kitchen table would be just the beginning.
The OP stated that the system was pressure tested and no leaks were found. I dont see any info on weather the grey water system was checked. I dont know if it can be pressure tested or even if it would reveal anything. The location of the damage leaves some reason to make sure there are no leaks in the grey water system.
I used to read those repair columns religiously and never saw a response that I thought was so off base.
Good Luck and keep us posted please. "Q"
1999 Newmar, Mountain Aire 3768, V-10, CAI, Headers.
"Spending our kids inheritance one trip at a time"