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Old 09-02-2017, 08:14 AM   #1
Jenl
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Floor Dipping

We have been traveling the country, on the road since April 10th with 20k miles under our belt. Over the last few weeks we have noticed about 3 spots in the floor in the middle of the trailer that are dipping (?) And squeak when you walk on them. We bought this 2016 trailer new specifically for this trip and will be selling it when we get home next month. Does anyone have any ideas what this is, how serious it is and how to fix it? Thanks
Passport Elite 23rb
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Old 09-02-2017, 08:42 AM   #2
JRTJH
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You don't state what kind of RV you have, I'd guess it's an ultra-lite model. The floor in that type trailer is a "sandwich construction" meaning from the top (under the vinyl/carpet) is 1/4" luan, 2" foam and the underside is 1/8" luan. So, what you're actually walking on is an aluminum frame on 16" centers with a 1/4" luan plywood layer under the carpet. It will flex/bend/break with excessive weight. If you can imagine laying 1x2's on the ground 16" apart, laying a sheet of 1/4" plywood on them and walking on that plywood, you'd expect it to flex between the supporting wood. It's the same with your trailer. The heating ducts are very thin aluminum tubing and where they are located there's not even any foam to support the top flooring, so it will flex even more in those areas.

Ultra-lite trailers are not designed to support "any excessive amount of weight" on the floors and abusing them, jumping, dancing, bouncing, etc are going to take a "significant toll" on the structural integrity. I wouldn't suppose your salesman discussed the trailer's "weaknesses" only the "strengths" during the sales pitch, but Ultra-lite trailers are not "immortal with unlimited structural strength".
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Old 09-02-2017, 09:03 AM   #3
Jenl
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Dipping floors

JRTJH, it's a Passport Elite 23rb.
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Old 09-02-2017, 09:24 AM   #4
JRTJH
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Quote:
Originally Posted by Jenl View Post
JRTJH, it's a Passport Elite 23rb.
That's an ultra-lite trailer and the above explanation is appropriate. Our 34' Holiday Rambler was a "standard weight" trailer and had 7/8" flooring. It didn't flex at all. If you think about it, the roof on your trailer is likely to also be 1/4" OSB and is considered "non-walkable". The only difference between the roof substructure and the floor is that 2" of foam.
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Old 09-15-2017, 12:51 AM   #5
ROCK1
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My 2016 Keystone Summerland Mini has 5/8" Dynaspan floor decking under the vinyl flooring. This is according to the TT brochure and upon inspection under the cabinets where holes are drilled in the floor. Dynaspan is stronger than plywood according to its website, and comes in a single sheet without any seams.
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