Thursday, June 8, 2023


Dry-rotted floors in RVs and what it would take to fix them

Last week, our RV repair shop received the below email from John W. regarding his RV’s dry-rotted floor:

We have a Riverside Retro 186R with an area of rot in the subfloor. I know you guys are busy, but you come highly recommended and I would appreciate an estimate for repairs. I can bring the RV to you for an estimate if needed. I’ve included a photo, the rot is in the area marked by green tape.
Thank You, John

Dry-rotted floor

Well, John and others, join me as I sit down with my Service Manager, Zach. In this video, we share our initial thoughts on how extensive the water damage may be in the dry-rotted floor and what it would take to fix.

This is good information to remember in case this happens to you and your RV. Water damage is common, so if it happens, know how to take care of it before it gets worse!


More from Dustin

Read more of Dustin’s articles here.

Dustin owns and operates California RV Specialists, an independent RV repair shop located in Lodi, CA. He thrives on sharing his knowledge and enthusiasm of RV repair and maintenance with his team, customers, and virtual friends.

Be sure to check out his YouTube channel where he shares what’s going on in the shop and the product offerings in the store. Dustin is also very active on Facebook. Join his group, RV Repairs and Tips – What’s in the shop!

Dustin proudly operates the business alongside his wife, Ashley; but the true pair that run the show are their Boston Terriers, Arvie and Hitch.


Dustin Simpson
Dustin Simpson
I have worn many hats in the RV industry through the years. From an RV Technician, Warranty Administrator, Parts Administrator, Parts Manager, Service Manager and now Business Owner. I have even been deemed an RV Expert by the California court system, working on behalf of the customers, dealers, and manufacturers. My repair facility has been servicing customers at the same location since 2003. What sets us apart from the dealerships is we are here to fix and maintain what you have, and not sell you a new one. Whether you own a million-dollar unit or an entry level, my message to you will be the same, it needs to be maintained.


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7 months ago

I don’t know, but I think this model has a SIP floor, that is a structural insulated panel. A laminated panel made of two layers of 1/8 plywood sandwiching a foam panel.
If so the floor has no framing, just the panel resting on the frame.
What can happen with these is the floor delaminates and gets soft.
There is actually no “rot” in this type of failure.

The way to tell is take a floor vent off and see if the flooring is this type of construction.

If it’s this type of failure, the repair is non-trival.

7 months ago

Hope we get a follow up on this.

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