Reply
 
Thread Tools Search this Thread Display Modes
 
Old 01-03-2020, 02:42 PM   #1
1 Rivet Member
 
Bulverde , TX
Join Date: Oct 2018
Posts: 15
Twin bed support and airflow mod

Built raised twin bed platforms to add support to the “ledges” and to increase airflow between the mattresses and the colder storage areas.

We’ve slept on the them the past two weeks and the difference is significant. No more condensation under the mattresses (several nights we got into the 20s) and we slept so much better with the extra support.

Highly recommend this modification.

Click image for larger version

Name:	IMG_4589.JPG
Views:	59
Size:	720.7 KB
ID:	358596Click image for larger version

Name:	IMG_4590.JPG
Views:	56
Size:	721.4 KB
ID:	358597Click image for larger version

Name:	IMG_4592.JPG
Views:	56
Size:	323.0 KB
ID:	358598Click image for larger version

Name:	IMG_4593.JPG
Views:	49
Size:	305.4 KB
ID:	358599
__________________

keneramirez is offline   Reply With Quote
Old 01-03-2020, 02:52 PM   #2
3 Rivet Member

 
2019 30' Classic
Pleasant Garden , North Carolina
Join Date: Oct 2018
Posts: 238
Can you supply some material sizes and measurements please?
__________________

jlandreth is offline   Reply With Quote
Old 01-03-2020, 03:28 PM   #3
Rivet Master
 
gypsydad's Avatar

 
2017 28' Flying Cloud
2014 25' FB Flying Cloud
2008 25' Safari FB SE
Austin (winter) Lincoln MT (summer) , Texas & Montana
Join Date: Jan 2007
Posts: 3,316
Quote:
Originally Posted by keneramirez View Post
Built raised twin bed platforms to add support to the “ledges” and to increase airflow between the mattresses and the colder storage areas.

We’ve slept on the them the past two weeks and the difference is significant. No more condensation under the mattresses (several nights we got into the 20s) and we slept so much better with the extra support.

Highly recommend this modification.

Attachment 358596Attachment 358597Attachment 358598Attachment 358599
guess I am wondering what the issue is with condensation under the matress?? We have twins also on last 3 AS's and no issues, even camping in FL...we use a dehumidifier which takes all the moisture out of the air... Please enlighten as to what is happening with your AS...what size, etc..
__________________
Empty Nesters; Gypsies on the road!
2017 28' Twin Flying Cloud
2017 F250 King Ranch, 4X4, Blue-Ox WDH
Summer in Lincoln, MT- Winter in Austin, TX
gypsydad is offline   Reply With Quote
Old 01-03-2020, 04:55 PM   #4
.-. -...
 
Adventure.AS's Avatar
 
2017 25' International
Port Dover , ON Canada
Join Date: May 2016
Posts: 1,784
Quote:
Originally Posted by gypsydad View Post
guess I am wondering what the issue is with condensation under the matress?? We have twins also on last 3 AS's and no issues, even camping in FL...we use a dehumidifier which takes all the moisture out of the air... Please enlighten as to what is happening with your AS...what size, etc..
He wasn’t talking about humidity in a warm climate. Water vapour condenses on cold surfaces such as the platform under the twin mattress over the outside storage compartments. Does it get in to the 20s F in Florida?
__________________
Ray B.
Adventure.AS is offline   Reply With Quote
Old 01-03-2020, 05:45 PM   #5
Rivet Master
 
SteveSueMac's Avatar

 
2012 27' Flying Cloud
W , New England
Join Date: Oct 2012
Posts: 7,397
Very smart mod. I’ve never had the experience you and others have talked about (mine’s a FB with the mattress over the outside storage) but your mod is so good - the factory ought to consider that on every model! Well done!
SteveSueMac is offline   Reply With Quote
Old 01-03-2020, 08:10 PM   #6
4 Rivet Member
 
2018 27' Globetrotter
Mooresville , North Carolina
Join Date: Jan 2018
Posts: 337
A product that serves the same purpose and might be a little easier project is called Hypervent. It provides air flow under the mattress. You can add extensions under your mattress and set the Hypervent on top and get the same result. See my post “Recent Globetrotter Modifications” in the Globetrotter forum for additional info. It would probably save you some time and effort.
__________________
2018 GMC Sierra 2500HD Duramax
Equal-I-zer Hitch
"Roadrunner"
GOUSC is online now   Reply With Quote
Old 01-03-2020, 08:12 PM   #7
Rivet Master
 
jeffmc306's Avatar
 
2019 27' Globetrotter
McHenry , Illinois
Join Date: Apr 2018
Posts: 894
Blog Entries: 4
GOUSC - We hit “Save” at the same time! I got this idea from you...

OP, Nice job with fitting the plywood and cleats - very professional job! This is a worthwhile upgrade.

Moisture under the mattresses is a common problem in the marine applications as well as RV’s. There’s a product called Hypervent that goes between the base and mattress to allow airflow eliminating the chance of mold and mildew.

I installed some under our Globetrotter twins and added a piece of 1/2” plywood to extend the support for the mattress.

Here’s where I got the Hypervent: https://www.defender.com/product.jsp?id=1818021
Attached Thumbnails
Click image for larger version

Name:	757230E9-E013-4A26-9934-E9E7CEF521E2.jpg
Views:	44
Size:	275.5 KB
ID:	358624   Click image for larger version

Name:	B19E175B-2826-4BF2-8239-8E0A8873DB4A.jpg
Views:	36
Size:	307.0 KB
ID:	358625  

Click image for larger version

Name:	734A4560-466D-4600-9F06-7DC20D2750DF.jpg
Views:	28
Size:	270.1 KB
ID:	358626  
__________________
2019 27’ Globetrotter FBT Walnut/Dublin Slate
2018 FC23FB
2019 Ram 2500 6.4 Hemi Laramie Blue Ox 1000#
WBCCI# 10258
RETIRED!
jeffmc306 is offline   Reply With Quote
Old 01-03-2020, 09:09 PM   #8
1 Rivet Member
 
Bulverde , TX
Join Date: Oct 2018
Posts: 15
Quote:
Originally Posted by jlandreth View Post
Can you supply some material sizes and measurements please?


I bought two sheets of thin plywood (top grade) and a handful of 1/4”x2” pieces to make it. I used a cutout of rigid insulation I’d tried to use before to eliminate the condensation (helped but didn’t completely solve it and didn’t add any additional support) as a template.

The part that most pleasantly surprised us was how much the extra support makes a difference. Makes the bed feel bigger and keeps the sheet from slipping off the mattress as much. It’s also nice to be able to sit on the edge of the bed to put on shoes and such.
keneramirez is offline   Reply With Quote
Old 01-03-2020, 09:16 PM   #9
1 Rivet Member
 
Bulverde , TX
Join Date: Oct 2018
Posts: 15
Quote:
Originally Posted by gypsydad View Post
guess I am wondering what the issue is with condensation under the matress?? We have twins also on last 3 AS's and no issues, even camping in FL...we use a dehumidifier which takes all the moisture out of the air... Please enlighten as to what is happening with your AS...what size, etc..


We have a 2017 25’ RB (Twins) Flying Cloud. We also use a dehumidifier but when camping in freezing temps the mattresses kept getting wet under them due to the cold storage underneath creating condensation when up against the warm mattress. I spent a month in NC last winter and it was a constant struggle. Ended up installing 3/4” rigid insulation board as a way to help, but it still didn’t completely resolve the issue.
keneramirez is offline   Reply With Quote
Old 01-03-2020, 09:18 PM   #10
1 Rivet Member
 
Bulverde , TX
Join Date: Oct 2018
Posts: 15
Quote:
Originally Posted by GOUSC View Post
A product that serves the same purpose and might be a little easier project is called Hypervent. It provides air flow under the mattress. You can add extensions under your mattress and set the Hypervent on top and get the same result. See my post “Recent Globetrotter Modifications” in the Globetrotter forum for additional info. It would probably save you some time and effort.


Yeah, I saw that but wanted to get the extra support while I was at it.
keneramirez is offline   Reply With Quote
Old 01-04-2020, 09:16 AM   #11
3 Rivet Member
 
2018 30' Classic
Sioux Falls , South Dakota
Join Date: Mar 2017
Posts: 102
Send a message via Yahoo to Kyet
I see many posts about the cold storage underneath the twins. Has anyone tried insulating the "ceiling" of the storage area itself. I wonder if that could help. The air under my Queen seemed to be conditioned with both heat and cold (Classic w/ the ALDE). Thanks for all of the info as I embark on another trailer with twins this time.
Kyet is offline   Reply With Quote
Old 01-04-2020, 09:39 AM   #12
Rivet Master
 
gypsydad's Avatar

 
2017 28' Flying Cloud
2014 25' FB Flying Cloud
2008 25' Safari FB SE
Austin (winter) Lincoln MT (summer) , Texas & Montana
Join Date: Jan 2007
Posts: 3,316
Quote:
Originally Posted by keneramirez View Post
We have a 2017 25’ RB (Twins) Flying Cloud. We also use a dehumidifier but when camping in freezing temps the mattresses kept getting wet under them due to the cold storage underneath creating condensation when up against the warm mattress. I spent a month in NC last winter and it was a constant struggle. Ended up installing 3/4” rigid insulation board as a way to help, but it still didn’t completely resolve the issue.
Thanks for the "education" on this...we have camped "occasionally" in 20' weather in Tetons on way from MT, but not often. As you may know, it can get into the 20's here in TX for a few days, and we do keep our AS furnace on as we store on our property; just not sleeping in it during those cold spells. Never looked or noticed an issue with mold or mildew, "yet"!

I think your platform support or the Hypervent material seem to solve the problem, and look like good solutions. Doesn't seem to be an issue during storage thankfully. Thanks again, for bringing this to our attention!
__________________
Empty Nesters; Gypsies on the road!
2017 28' Twin Flying Cloud
2017 F250 King Ranch, 4X4, Blue-Ox WDH
Summer in Lincoln, MT- Winter in Austin, TX
gypsydad is offline   Reply With Quote
Old 01-04-2020, 02:07 PM   #13
3 Rivet Member
 
Napa , California
Join Date: Aug 2018
Posts: 164
We extended the twins bed platform as well (took out the original boards and created new ones that were full mattress width with a finished L oak edge. Then we added some thin antimicrobial padding underneath the mattresses. Much more comfortable, the beds stay made, the cabinets underneath are easier to open and close and there is no mold or moisture either. Overall, well worth the effort.
Atwebs is offline   Reply With Quote
Old 01-04-2020, 10:37 PM   #14
:SPACE A" S/O 11 Air19745
 
guskmg's Avatar

 
2006 34' Classic S/O
Fort Worth , Texas
Join Date: Feb 2007
Posts: 1,152
I'm not sure this will work 100% of the time, but my friend and I use heated mattress pads. I took and old pair of suspenders, cut them apart and hooked them to the bottom of the pad crossways under the mattress to keep it in place. The pad uses very little AC and there may be some DC ones on the market. That and my CPAP last all night on my set up. I have not noticed moisture below. But, if i did, I would add a layer of insulation board on the bottom above the storage space. My electrical equipment is under there and it may be providing enough warmth to keep thing dry. If EMS is a problem you could ground (bond) the aluminum foil surface to the electrical system.
guskmg
guskmg is offline   Reply With Quote
Old 01-06-2020, 09:18 AM   #15
Rivet Master
 
2019 30' International
Pennsylvania , Pennsylvania
Join Date: May 2016
Posts: 533
I installed the hypervent, but will likely do this elevated platform, it allows for a sorely needed width extension
__________________
If you ain't havin' fun you ain't doin' it right

2017 Ford CCSB F250 XLT 6.2L Gas 4x4 Ruby
2019 International Serenity 30 Rear Twin
majorairhead is offline   Reply With Quote
Old 05-31-2020, 09:32 AM   #16
4 Rivet Member
 
dmbecke's Avatar
 
2014 25' FB Flying Cloud
Des Peres , Missouri
Join Date: May 2016
Posts: 263
Following
dmbecke is offline   Reply With Quote
Old 05-31-2020, 09:50 AM   #17
3 Rivet Member
 
pjshier's Avatar
 
2017 27' International
Wasilla , Alaska
Join Date: Feb 2018
Posts: 168
me three on the extension

I added some width by attaching some relatively thin (less than 1/2 inch) strips of high grade plywood with rounded corners. The strips are about 8 inches wide, and do not extend all the way from the foot to the night stand. Thicker material would produce a lengthwise bump along the edge of the mattress without replacing the entire bunk top. The thinner material is imperceptible and entirely adequate for the purpose.

Not craftsman-like but supremely functional and easily removed. Solved all the aforementioned utility issues. I can see where the venting would be very useful and will look further into the hypervent.
__________________
2017 Int'l Serenity 27FB
2017 F350 oil burner
pjshier is offline   Reply With Quote
Old 06-03-2020, 09:11 PM   #18
Rivet Master
 
gypsydad's Avatar

 
2017 28' Flying Cloud
2014 25' FB Flying Cloud
2008 25' Safari FB SE
Austin (winter) Lincoln MT (summer) , Texas & Montana
Join Date: Jan 2007
Posts: 3,316
We are still monitoring this and have not done anything yet. NC in November, Texas coast January for 5 days, then again in March for 3 days on the beach. No issues. Just did 10 days in Tetons last couple weeks; checked and again no issues. Is there really a problem or am I just lucky??
__________________
Empty Nesters; Gypsies on the road!
2017 28' Twin Flying Cloud
2017 F250 King Ranch, 4X4, Blue-Ox WDH
Summer in Lincoln, MT- Winter in Austin, TX
gypsydad is offline   Reply With Quote
Old 07-03-2020, 07:09 PM   #19
4 Rivet Member

 
2020 25' Globetrotter
Malibu , California
Join Date: Jul 2017
Posts: 338
Quote:
Originally Posted by gypsydad View Post
We are still monitoring this and have not done anything yet. NC in November, Texas coast January for 5 days, then again in March for 3 days on the beach. No issues. Just did 10 days in Tetons last couple weeks; checked and again no issues. Is there really a problem or am I just lucky??
I added 1/2 inch cabinet grade plywood extended 4 inches out and on top of stock ones just for the support. No more pushing the mattress back in and easier to make bed, change sheets. I did not have moisture problems before but that is for another day if I do.
__________________

__________________
2016 450 GL, EazLift Elite 1000
Renogy 400 watts and 100 suitcase, 30/100MPPT, Victron 712, 6V Duracells
Honda 2200 propane, Weboost Drive X, EEZ TMS
Traded in 2016 Sport 16, 2019 Sport 22
As they say, third AS is what to buy first
Garfish is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
airflow in jalousie windows jrossingaul Windows & Screens 9 07-16-2015 05:31 PM
airflow elbundi Classic Motorhomes 7 10-05-2009 05:23 AM
Twin bed support question conniera@yad General Interior Topics 6 05-20-2009 08:18 PM
airflow for converter JK3500 Batteries, Univolts, Converters & Inverters 2 11-21-2008 05:36 AM
anyone ever balance the airflow on a furnace? john hd Furnaces, Heaters, Fireplaces & Air Conditioning 18 11-25-2003 12:16 PM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.



All times are GMT -6. The time now is 05:44 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.