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Old 06-20-2021, 11:23 AM   #1
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2021 27' Globetrotter
Piedmont , South Carolina
Join Date: Aug 2020
Posts: 23
Blog Entries: 1
Twin bed air gap

Thought I would alert others who have a twin bed trailer. We have a 2021 Globetrotter FBT. We recently noticed significant open gaps at the foot , (from the foot toward the middle) where the bed platforms are attached to the outside. With the outside bins open you could see through to the outside. On one platform the gap was 3/4” !
After a trip to Home Depot for supplies, the gaps have now been insulated and sealed.
Obviously, there was no inspection of this.
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Old 06-20-2021, 04:30 PM   #2
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2017 27' International
Wasilla , Alaska
Join Date: Feb 2018
Posts: 365
same thing 2017 27FB

...and responded the same way: found some suitable foam trim and filled the gaps. Stays put. Not sure it is a design flaw or mfg. defect as much as a mfg. tolerance issue arising from hand-made construction.

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Old 06-20-2021, 05:23 PM   #3
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2020 25' Globetrotter
Santa Rosa , California
Join Date: Feb 2017
Posts: 913
I killed 2 birds with one stone while dealing with this issue.

The twin bed platforms on our 2020 25' Globetrotter allowed the mattresses to stick out over the edge. This lack of support made it quite uncomfortable to sit on the edge of the bed.

I unscrewed the platforms and used the curved edges as templates to cut out approx. 6" wide strips of 3/4" finish plywood. Applied foam insulation to the edges of the strips then screwed the strips down next to the wall followed by the original platform next to them, with the factory molding facing toward the aisle.

The gap to the wall was thus filled, the platform was widened to better support the mattresses, and the original factory look of the platform edge was retained.

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Old 06-20-2021, 08:55 PM   #4
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2021 27' International
Fredericksburg , Texas
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Interesting, I will be taking a look at my 2021 International in the morning to see if I will encounter the gap issue.
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Old 06-21-2021, 05:48 AM   #5
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1994 25' Excella
Waukesha , Wisconsin
Join Date: Sep 2020
Posts: 390
Are we talking about the platform the mattresses sit on? If so, seems like they've installed them with a gap for decades. My 1994 Excella has a gap at the end of both mattress platforms, but it only opens to the storage compartment below. No access to the outside through the gap, and as long as the seal on the outside door is intact there is really no problem. I always thought that having some air flow in/out of the storage compartment was a plus to keep things from becoming moist in there.

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Old 06-21-2021, 09:50 AM   #6
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2021 27' International
Fredericksburg , Texas
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Posts: 162
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I checked have zero gap under the twin beds to the outside.

Per richard5933 response, are you talking about a gap the upper part platform? if so, there would be no need to seal the gap.
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Old 06-21-2021, 11:27 AM   #7
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2019 25' Flying Cloud
West Windsor , Vermont
Join Date: Dec 2014
Posts: 55
We did what mikeinca did a couple of years ago. I went easy on the insulation after noting the condensation concerns several owners experienced. That floppy mattress overhang annoyed me. Several people built up an extended second layer of plywood with an airspace between.
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Old 06-21-2021, 01:32 PM   #8
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Cuddebackville , New York
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I didn't think adding that extra 3" of width for the mattress would make much difference- until I did it!
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Old 06-21-2021, 02:27 PM   #9
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2020 23' Globetrotter
Savoy , Texas
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Our 2020 GT FBT had the same mattress overhang and gap to the outside wall. We removed the original mattress got some 3/4 thick plywood. Used the original for a pattern to cut the curve, slots and added 3 inches to support the mattress. We put more foam to seal the outside gaps where needed.
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Old 06-24-2021, 12:47 PM   #10
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Kinnelon , New Jersey
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Interesting indeed. We picked up a new 2021 GT 25 FBT. On our first trip in the Northeast in April (when temperatures were still in the 40s at night), we noticed a nasty draft from the exterior wall along the mattresses. I just assumed it was due to the AS not being that air tight. If this is the reason, it now makes sense (and also seems to highlight a design flaw).
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