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RV Repair/Thor Aerolite 21RDB floor rot


denis VRtech wrote at 2007-06-20 01:27:39
I just bought the same RV, the same year, and there is exactly the same problem in worst. I found that when you ride the trailer on the rain, a lot of water get in the floor by the battery vent under the floor, at the left front corner. Some time, we must think that water can come from under the floor and get trapped in it by the sheet of aluminum. I plan to remove the floor from under and replace almost half of it.

thank you

mark wrote at 2011-09-07 00:58:34
I replaced the floor last spring by installing 2x8's between the main i-beams under the camper on 16" centers with small cross beams between them.  Then I laid new 1/2" inside the camper on top of the existing foam/thin plywood after drying with fan.  I did not remove the cabinets but right up to it.  Had to raise cabinet doors on some of them.  Then bought outdoor blue carpet to cover the entire inside floor.  I kept most of the old flooring as a template for special areas like the bathroom.  Floor is like new.  If I had to do it again, I would buy 1/4" plywood and cross lay it so  

Dennis Lee wrote at 2013-07-11 21:38:31
there is a 1/2 inch lip on the inside walls that run the length of the trailer. I laid the plywood side to side then put wood flooring down. This was simple and has proven stronger than the original floors.

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Dave Cunningham


I have been in the RV industry for over 25 years. I am currently the Parts Manager in the Parts, Service, and Warranty division at a major RV company. I can answer all questions regarding RV`s, and if I need to, I can get answers from our Engineering or Service Department. I worked on the production line for 20 years before getting into management, so I know how units are put together. Most of my expertise is in the structural aspects of an RV. Interiors, Roofs, and sidewalls are my forte.

I can not answer questions about engines, transmissions, etc. on motorhomes. I've worked only with towables. I can still answer questions that deal with motorhomes, just not their engines.


Bachelors degree in Organizational Management - Goshen College, Goshen, IN

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