Galley Slide Sub Floor Damage

[Lensing]

Our 2017 Momentum 376TH, courtesy of the fridge water drain design, overflowed while rig was at a seasonal spot unattended for a month. Long story short, enough water collected that the sub-floor is severely damaged and I need to disassemble and replace. Has anyone tackled this, I am plenty handy being a technician (mechanical and electrical) for three decades, however I am not sure if this is something I should DIY or bring to a dealer. I suspect pulling the fridge, and oven will give me the needed access, but I am concerned the slide needs to be pulled out. Seems marine grade plywood should be used versus OSB, and the concept of draining the fridge into a half quart tub without an overflow line to the exterior, in the hopes that this water will evaporate is a bad design.
Any feedback is appreciated.

 

[Bonzer-MGRV]

Our 2017 Momentum 376TH, courtesy of the fridge water drain design, overflowed while rig was at a seasonal spot unattended for a month. Long story short, enough water collected that the sub-floor is severely damaged and I need to disassemble and replace. Has anyone tackled this, I am plenty handy being a technician (mechanical and electrical) for three decades, however I am not sure if this is something I should DIY or bring to a dealer. I suspect pulling the fridge, and oven will give me the needed access, but I am concerned the slide needs to be pulled out. Seems marine grade plywood should be used versus OSB, and the concept of draining the fridge into a half quart tub without an overflow line to the exterior, in the hopes that this water will evaporate is a bad design.
Any feedback is appreciated.

Had same issue with fridge but caught it before any damage. After eight trouble free years with my 2118 in my previous rig and one good year in my 2023 376 ths I had your problem starting a month ago. The door latches broke on our fridge and the doors were replaced under warranty. When the dealer replaced the doors they neglected to shim them to the right height so the center flap hung up and never sealed correctly. This caused condensation to build up and fill the resivour overnight. Until the dealer put the new doors on I never had water in the resivour. I shimmed the left side door and problem solved. Shame on the dealer for not checking operation after install and shame on me for not checking the dealer’s work.

 

[geotex1]

OP, if you are still around the forum, this is a big job, but can be DIY. It would be best to pull the entire slide box out for the job, and you'll need to strip everything from within it. You will likely not be able to procure a continuous length of OSB/plywood (it is made, but delivered direct to manufacturers). Nonetheless, you can laminate what is needed. You do not need marine grade but can use BCX. The only difference is marine has tighter requirements regarding gaps between ply segments. Otherwise, same glue. You'll want to laminate up to the same thickness of the original material so that you thoroughly overlap the joints. Scarf or biscuit join the ends, and fully glue the lamination. After that, it's super simple to remove the old from the box and install the new. You'll want to seal the bottom and edges of the new wood with a nice, two-part boaters penetrating epoxy sealer. Not just a paint.