201QB floor soft spot - Dutchmen Owners
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Old 03-18-2022, 11:20 AM   #1
Bob
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201QB floor soft spot

I have a 2017 Kodiak 201QB that has recently developed a soft spot in the floor. Has anyone seen this or had there floor repaired. In YouTube videos people cut out the bad spot, replace the subfloor and then put down new flooring. However, the subfloor is only 1/4 inch thick in these units. Replacing it is not going to solve the soft floor problem unless some sort of support is added under it. I have a feeling I could get in over my head in a hurry.

Any suggestions?
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Old 03-18-2022, 01:16 PM   #2
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Quote:
Originally Posted by Bob View Post
I have a 2017 Kodiak 201QB that has recently developed a soft spot in the floor. Has anyone seen this or had there floor repaired. In YouTube videos people cut out the bad spot, replace the subfloor and then put down new flooring. However, the subfloor is only 1/4 inch thick in these units. Replacing it is not going to solve the soft floor problem unless some sort of support is added under it. I have a feeling I could get in over my head in a hurry.

Any suggestions?

Good morning. From what I have seen on my rv when it developed a soft spot, the floor is made up of two thin sheets of plywood with a styrofoam layer between them. You can check this by looking under the shower or under the sink where they have a hole cut for pipes. Your soft floor is probably a result of the styrofoam between the layers disintegrating and the plywood itself not being able to support the weight alone.

You may be able to reinforce it by drilling a small hole and injecting expanding foam into the space if you find out your floor is made this way.

https://images.squarespace-cdn.com/c...g?format=1500w

https://www.performancepanels.com/re...al-vehicles-rv
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Old 07-14-2022, 07:26 AM   #3
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I wonder how the floor problem worked out? I too am having soft floor issues and thought over laying floor with 5/8” plywood screwed down then replacing flooring. Any comments appreciated.
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Old 07-16-2022, 04:51 PM   #4
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Some folks have reported removing everything above the floor.
Remove the thin top floor panel.
Remove the foam.

Replace the foam. Glue it to sub floor.
Glue in periodic reinforcing pine strips to improve strength.
Glue on top floor panel.

This can also be done in smaller sections.
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Old 07-17-2022, 04:30 AM   #5
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Thanks ��
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Old 07-17-2022, 03:33 PM   #6
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I’m going to try the injected epoxy method but I haven’t done it yet.
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Old 09-19-2022, 12:05 AM   #7
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Soft floor Kodiak 2017 201QB

Bob, same model. Same problem. Does not appear to be water damage. Center of floor at pivot point in front of cabinet and in front of bed. Indications are compressed foam due to insufficient and too wide distance between subfloor joists. Calling Dutchman for info on actual distance of joists. Our RV dealer says not covered by warranty. Most people reporting similar problems on this type of sandwich foam construction—-engineering defect because no one verified it would hold up to traffic. Expect to have to remove top layer woos subfloor and foam. Then add support and joists, add expanding foam around joists. Add new subfloor and then new flooring. Prefer to to use aluminum joists, bolt and weld,but some use wood 2x4. Hoping Dutchman can offer advice about floor structure with specs.
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Old 09-20-2022, 01:14 AM   #8
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Hoping to hear some good info. Floor is getting worse. Thanks, Jack.
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