Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Monaco Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 12-06-2020, 08:22 PM   #1
Senior Member
 
Monaco Owners Club
Join Date: Nov 2017
Posts: 1,466
Moisture under mattress.....

I did my sheets the other day and noticed something odd.....moisture under my mattress!

I had replaced the mattress with a nice foam one just a couple of months ago. The bottom of the mattress has plastic on it.

Under the wood is the access point for the engine. Could this be some kind of condensation from body heat?

...and no....I'm not a candidate for the rubber sheet brigade. At least, not yet

I did have a thought earlier that it might be an idea to put some round vents in the sides of the engine compartment box for ventilation.
Attached Thumbnails
Click image for larger version

Name:	20201206_191606.jpg
Views:	12
Size:	272.0 KB
ID:	310520  
__________________
Bob Jones - 2000 Monaco Diplomat / ISC315 with Linnig Electromagnetic Clutch Fan
180 Degree Atwood Boiler...formerly Hot Water tank.
30km Range WiFi Solution
BobJones is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 12-06-2020, 09:10 PM   #2
Senior Member
 
nvs4602's Avatar
 
Forest River Owners Club
Join Date: Jun 2017
Posts: 751
It's probably condensation from the temperature difference from engine compartment to inside. The plastic will draw moisture too. Check that all insulation is in place in the engine compartment.
__________________
2017 Coachmen Leprechaun 311FS
2020 Jeep Trailhawk Elite (Toad)
nvs4602 is offline   Reply With Quote
Old 12-06-2020, 09:11 PM   #3
Senior Member
 
Monaco Owners Club
Join Date: Nov 2017
Posts: 1,466
That's what I was guessing. So, in theory, if I put vents in the side of the box it should bring the temperature of the engine compartment to the same as the interior.

I will try it - thanks for the thoughts
__________________
Bob Jones - 2000 Monaco Diplomat / ISC315 with Linnig Electromagnetic Clutch Fan
180 Degree Atwood Boiler...formerly Hot Water tank.
30km Range WiFi Solution
BobJones is offline   Reply With Quote
Old 12-06-2020, 11:32 PM   #4
Senior Member
 
Join Date: Nov 2016
Location: Oregon occasionally, Baja often
Posts: 469
On our earlier rigs, we found moisture under the mattress several times.
Leaving for the day, we opened all the windows, propped the mattress up, and set the mobile fan to blow at the underside of the mattress.

With that amount of standing water soaking out from the mattress, we were concerned about mold.

2003, we converted a 1997 Ford CF8000 commercial truck into our concept of an ExpeditionVehicle.
I built the bed-frame with 'expanded' aluminum as the support for the mattress.
This stuff looks like a heavy window-screen, and is designed for steps and over-head walk-ways.
With a couple-three cross-members, our mattress has plenty of support... and plenty of ventilation.

To increase your under-mattress ventilation without re-engineering the whole shootin' match, could you set it on several sections of scrubber pads used by janitors on their floor-polishing machines?
The open weave is uncrushable; I see these at Cash-n-Carry commercial grocery.
LargeMarge is offline   Reply With Quote
Old 12-07-2020, 12:06 AM   #5
Junior Member
 
Join Date: Sep 2020
Posts: 10
It's just condensation, they make these rubber slated pads that you can put under the mattress to fix it.

https://www.amazon.com/dp/B07BHJRDDG...ogi&th=1&psc=1

Totally easy fix just make sure to dry the area well before putting the mattress back.
coteyr is offline   Reply With Quote
Old 12-07-2020, 12:55 AM   #6
Senior Member
 
Monaco Owners Club
Join Date: Nov 2017
Posts: 1,466
You guys are awesome!

I was a bit concerned because I had never seen that before. To make it more interesting, my mom had bought me a new down comforter. It's really warm and many times I woke up sweating. So when I saw the moisture under the mattress I was like, you've got to be kidding me?

I drilled (9) 1" holes into the lower housing of the bed. So those holes lead directly into the engine lid compartment. I wanted airflow through their anyway because I had a blanket in their that started to smell pretty stale and a little moldy.

I don't know if that will be sufficient but it should get the temperature even. If not, then I will put something under the mattress as you both suggested. I'm thinking ventilating that box is something that should have been done from the factory.

These are the stainless vent covers that will go over the holes when they arrive.

__________________
Bob Jones - 2000 Monaco Diplomat / ISC315 with Linnig Electromagnetic Clutch Fan
180 Degree Atwood Boiler...formerly Hot Water tank.
30km Range WiFi Solution
BobJones is offline   Reply With Quote
Old 12-07-2020, 03:43 PM   #7
Senior Member
 
Outbound's Avatar
 
Join Date: Jun 2012
Location: NorCal
Posts: 2,835
Running your a/c with mattress propped up will also dry it out.
__________________
Outbound
2002 Monaco Executive 500 ISM
2004 GMC 2500HD 4X4
Outbound is offline   Reply With Quote
Old 12-07-2020, 03:54 PM   #8
Senior Member
 
Join Date: Nov 2015
Posts: 17,173
We swapped the OEM mattress for a Tempur-Pedic Mattress
Notice condensation underneath one day when I was looking in the bed storage compartment

Bought an Egg Crate Pad...put it under the mattress.
No more condensation issues



$16/17 for Queen Size
__________________
Is it time for YOUR Medication or Mine?
Dodge 3500 w/Tractor Motor & NUWA 5vr
US NAVY---USS Decatur DDG-31
Old-Biscuit is online now   Reply With Quote
Old 12-07-2020, 05:09 PM   #9
Senior Member
 
Winemaker2's Avatar
 
Join Date: Nov 2006
Location: Western NY
Posts: 4,211
Very common on boats.
I would not ventbto outside or eng compartment. Answer is spacers under mattress that let it breath with inside air.
There are spacers meant for this or look at dri-deck plastic " tiles" that connect yogether and provide sir space to breathe
__________________
Don & Marge
'13 Newmar Ventana 3433 - '14 CR-V TOAD
'03 Winnebago Adventurer 31Y - SOLD
Winemaker2 is offline   Reply With Quote
Old 12-07-2020, 05:31 PM   #10
Senior Member
 
Bobby F's Avatar
 
Join Date: Aug 2019
Location: MN
Posts: 1,517
Quote:
Originally Posted by Winemaker2 View Post
I would not ventbto outside or eng compartment.
+1

Are you talking about venting between the engine compartment and the living area? You might find that, if you open a window while driving, you're drawing noise and smell and carbon monoxide into the living area. Plus, you'd be weakening the already-weak plywood firewall protection.


(Reading everything again, you may be speaking only of making openings between the living space and the compartment on top of the engine access cover, in which case, sorry, ignore me.)
__________________
------------------------------------

1993 Rockwood 28' Class C - Ford E-350 7.5L
Bobby F is online now   Reply With Quote
Old 12-07-2020, 07:11 PM   #11
Senior Member
 
Monaco Owners Club
Join Date: Nov 2017
Posts: 1,466
Quote:
Originally Posted by Bobby F View Post
+1

Are you talking about venting between the engine compartment and the living area? You might find that, if you open a window while driving, you're drawing noise and smell and carbon monoxide into the living area. Plus, you'd be weakening the already-weak plywood firewall protection.


(Reading everything again, you may be speaking only of making openings between the living space and the compartment on top of the engine access cover, in which case, sorry, ignore me.)
Yeah, I wasn't clear on that. I'm talking about venting the box under the bed. Not the actual engine compartment. I found that the air under there was getting stale and anything under there would tend to mold. So, for that reason only, I knew a while back I should vent it so that it got airflow.

I will have to make sure the rest of the compartment is sealed though.
__________________
Bob Jones - 2000 Monaco Diplomat / ISC315 with Linnig Electromagnetic Clutch Fan
180 Degree Atwood Boiler...formerly Hot Water tank.
30km Range WiFi Solution
BobJones is offline   Reply With Quote
Old 12-08-2020, 10:32 AM   #12
Senior Member
 
scenic route's Avatar
 
Join Date: Jan 2010
Posts: 2,217
Might check out the 'Froli Mattress System'. They're a little pricey, but are used extensively on motor yachts and sailboats.
__________________
Jan and Bob

'05 Monaco Windsor 40 DST - ISL / '08 Wrangler
scenic route is offline   Reply With Quote
Old 12-20-2020, 08:52 PM   #13
Senior Member
 
Monaco Owners Club
Join Date: Nov 2017
Posts: 1,466
Quote:
Originally Posted by Old-Biscuit View Post
We swapped the OEM mattress for a Tempur-Pedic Mattress
Notice condensation underneath one day when I was looking in the bed storage compartment

Bought an Egg Crate Pad...put it under the mattress.
No more condensation issues



$16/17 for Queen Size
Do you know where you got that or what it's actually called?

I can't seem to find anything reasonable for under the foam mattress. It seems most people are addressing it by putting Hypervent under it. Up here it looks like it's the same price as the mattress - $300

If the issue is actually caused by a temperature differential between the cold air of the engine compartment and the warmer bottom of the foam mattress I'm thinking that perhaps I should be focusing on bringing the engine compartment up to the same temperature of the room by means of vents.

I had drilled (9) 1" holes around the compartment but am now wondering if that it enough. Perhaps what it needs is 3 floor registers put in it.
__________________
Bob Jones - 2000 Monaco Diplomat / ISC315 with Linnig Electromagnetic Clutch Fan
180 Degree Atwood Boiler...formerly Hot Water tank.
30km Range WiFi Solution
BobJones is offline   Reply With Quote
Old 12-21-2020, 01:59 PM   #14
Senior Member
 
Outbound's Avatar
 
Join Date: Jun 2012
Location: NorCal
Posts: 2,835
Wonder if Dyna-Mat insulation would work better under bed area, would also be a great sound deadener.
__________________
Outbound
2002 Monaco Executive 500 ISM
2004 GMC 2500HD 4X4
Outbound is offline   Reply With Quote
Reply

Tags
mattress, moisture



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
Moisture stain under AC vent Driftless RV Class C Motorhome Discussions 3 06-07-2019 07:48 AM
Mattress Moisture Issue BikerRN1 iRV2.com General Discussion 3 02-13-2019 04:44 PM
Moisture under memory foam mattress! Wbonsell iRV2.com General Discussion 18 12-26-2014 01:54 PM
Moisture under hot water heater wvcamper RV Systems & Appliances 2 02-21-2014 09:45 AM
Moisture problem under beds Godtomley Expandables, Hybrids, & Lightweights Discussion 2 01-16-2014 07:51 PM


All times are GMT -6. The time now is 01:01 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.