condensation under top bunk matress

Discussion in 'Motorhome Chat' started by 656, Feb 2, 2009.

  1. 656

    656

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    I hope someone has a solution to my problem. We have a Carioca 656 with fixed bunks. The top bunk suffers from condensation after being slept in. We have to prop the mattress up in the morning to dry it out. However, I need to solve this problem permanently. Any ideas?
     
  2. brianju

    brianju

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    If the mattress is on a solid base there would be no air flow - you could try fitting slats for the mattress to sit on.

    Hope this helps.
     
  3. scotjimland

    scotjimland Funster Life Member

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    Hi Dave

    I presume it's not a slatted base .. ?

    if it's a solid plywood base I wood look at drilling a series of ventilation holes, say 20mm ..

    Another option is to lay silver insulation on the base, as used by builders for wall insulation.. short term, lay newspaper or cardboard under the mattress..


    Jim
     
  4. The Kar-Mann

    The Kar-Mann

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    Hi we had the same problem on a C I 181 a few years back the best thing we did and the cheapest was to put a towel under it at night then just dry the towle the next day or more of a perminant solution would be trying to change the solid base for beach slats we chose the first it was easier, Good luck
    Andrew:thumb:
     
  5. Wildman

    Wildman

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    I assume you mean the underside of the upper mattress suffers condensation when the bottom bunk is used. cover the frame with material to prevent condensation reaching the mattress. Condensation is caused by lack of ventilation and warm air (breath) condensing on colder surfaces.
     
  6. pappajohn

    pappajohn Funster Life Member

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    got the same problem but its where the pillows touch the end wall. short of drilling holes though the rear wall :Eeek:i cant think of a solution.
    the side wall has a trimmed ply panel on spacers but if i do the same on the end the day cushions wont fit:Sad:

    insulating the base will work in the short term but it really does need ventilation long term
     
    Last edited: Feb 2, 2009
  7. Red Sonja

    Red Sonja Funster

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    We got some slats from Ikea cost about £5 and put them under the matress. Solved the problem.
     
  8. colyoung

    colyoung

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    Dave,
    There is quite a detailed thread about this problem on the "other"forum(motorhome facts)I don't think anyone came up with a definitive answer though.When warm air hits a cold surface then........nature takes over!
     
  9. Dodgey

    Dodgey Funster

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    Us too, we are resigned to pulling the mattress etc down when parking up after trips to let things dry as slats arn't an option.
    Curiously, we replaced the insulation under the bed base ie between the ali ouside and the wood inner, using typical loft type insulation and the condensation was drastically reduce, not eliminated obviously but reduced on our New Years trip, -3/4 outside, coezzeeee inside.

    Si.
     
  10. Douglas

    Douglas

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    The secret is ventilation, it does not mater how you do it but the bottom of the mattress must be ventilated. if you look on the sites for boats and ships chandlers you might find your answer there as it is a common problem on boats.

    Doug....
     
  11. traveller

    traveller

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    hello

    How about using those insulated camping mats that used to be used by campers between them & the ground. I have done this behind our settee in the motorhome not so much for condensation but because it feels so cold behind there this cold weather. I have also used this method to line the tops of lockers to prevent condensation forming.


    Traveller
     
  12. vicdicdoc

    vicdicdoc

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    As 'Red Sonja' mentioned - 'IKEA' have adjustable width [slightly bowed] slats which will do the job perfect [and they are cheap !
     
  13. Terry

    Terry Funster Life Member

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    Hi has it got a slatted base,or solid ply?if solid change it for slatted :thumb:
    terry
     
  14. 656

    656

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    Hi

    It has a solid base. Changing to a slatted base may not be as simple as it seems. The IKEA slatted bed bases may be the solution, it looks like thats where we are going this weekend!!!
     
  15. ned

    ned

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    condensation

    Hi
    Had the same problem with our hymer544 and posted a thread on MHF. We tried evrything mentioned above until we found a good solution. Go the natural mat company. They do a woven bed underlay. It comes in a variety of sizes and for your bunk size it would be £40. It is brilliant, leaving a breathable gap of 20 between the matress and the plywood base. I will assure you it's worth the money and works perfectly. They use it on bunks in boats.

    Ned
     
  16. Johns_Cross_Motorhomes

    Johns_Cross_Motorhomes Trader - Motorhome & Accessory Sales

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    I have the same problem on my boat, I put towels underneath, they get wet!

    You can get some slat type under 'mat' thingy from boat chandlers that are meant to cure it.

    Its the warmth of your body through the mattress onto the cold bed base that does it.

    Peter
     
  17. 656

    656

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    Well, we went to IKEA - thanks Sonja - got some slats for £12.90. :thumb::thumb: I will see how the perform when we gop out in the van next. Thanks to all. Oh, and we can recommend the IKEA breakfast at £1.65 :thumb::thumb:
     
  18. Reallyretired

    Reallyretired Funster

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    If it doesn't work there is a product called AKWAMAT (it really is spelled like that) which is a dutch product that had rave reviews some years back when the drop down beds of Hymers seemed to suffer from this problem. It is still on the market though I don't know who stocks it, possibly boat chandlers.:thumb:
     
  19. 656

    656

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    The Akwamat solution looks good, that will be my next avenue should the present one fail to live upto expectations.:ROFLMAO:
     
  20. ray

    ray

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    condensation

    We had the same problem with a caravan and our motorhome. I both cases we just put a sheet/pieces of 1/8inch untreated plywood under the matress and never had another problem in years. Simple but it worked for us.
     
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