Condensation in overcab bed

Discussion in 'Tech/Mech General' started by irnbru, Nov 8, 2015.

  1. irnbru

    irnbru Funster Life Member

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    Early this year we appeared to suffer dampness which turned out to be condensation. Now the weather is getting colder its reared its ugly head again and is now forming at the opposite side too. We can see it running down the plastic wall from about halfway up, its that bad its made the mattress all wet. 20151108_111622.jpg 20151108_111622.jpg 20151108_111728.jpg
    The top hopper window is open so how else can we remedy this situation. Fill it with foam? If so how much? Any suggestions welcome.
     
  2. Badknee

    Badknee Funster

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    If it is just condensation then heat to dry it out and fresh air to stop it coming back, move everything away from the walls.
     
  3. Lenny HB

    Lenny HB Funster

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    To me it looks like too much water damage to be condensation, it looks more like water ingress. You may be in need of some serious repair work, to start with you will need to remove the inner wall board to establish the extent & source of the problem.
     
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  4. Badknee

    Badknee Funster

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    I'm sorry to say I do agree with Lenny but I hope it is just condensation .
     
  5. irnbru

    irnbru Funster Life Member

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    Im sure its just condensation. We already had it resealed for ease of mind. It seems to be only now that the cold weather is returning. Living in Scotland sees plenty of rain and theres been no wet all summer. The fact we can actually see it and its forming halway up seems to rule out dampness to me but hey what do I know, thats why im here asking more knowledgable folk.
     
  6. andy63

    andy63 Funster

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    If its condensation the only answer is insulation and good ventilation ...
    The pictures make it look like it's been present for a bit though...
    Did you get the pump /water leak sorted???
    Andy
     
  7. rangitira

    rangitira Funster

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    Generally from about December, to middle of March, I have a small fan heater on a timer in the M/H, it gets to "play" 4 times a day (every 6 hours) for an hour. I leave it on the glass top of the hob. That seems to keep the condensation and mould away, not only does it throw out a bit of heat, it also circulates the air about a bit .
     
  8. Minxy Girl

    Minxy Girl Funster Life Member

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    That doesn't look like 'just' condensation to me either ... if it's forming 'half way up' it could be one of the timber framework spars that run across at that point behind the panelling which is damp and the moisture is coming through from that giving you the impression it's just condensation. Looking at your first photo you can see on the left that the damp area actually goes further left (looks yellowish) in a 'line' ... if it was just condensation or localised damp I would expect the yellowish stain/mark to be equal around the whole of the brown stain, not just go to one side.

    The only sure way to check is to remove the inner panel and have a shuftie - I notice tha tyou've got some sort of fixing coming through - could that be letting some damp/water in?

    Not sure how/what they did to reseal but unless they removed all the old sealant, cleaned up throughly and then resealed it properly it might not be totally water tight.
     
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  9. Lenny HB

    Lenny HB Funster

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    Not necessarily a good thing as warm air retains more water.
     
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  10. Lenny HB

    Lenny HB Funster

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    If there has been water ingress resealing is a waste of time unless the inner panels are removed and thoroughly dried out, also the source of the leak needs to be probably established. If it is an older van with polystyrene insulation, water can capillary trough and the source of the leak can be some distance from the damp area.
     
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  11. wizzer59

    wizzer59 Funster

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    Thought about trying these out (y) or something similar :cool:
     
    Last edited: Nov 8, 2015
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  12. Boringfrog

    Boringfrog Funster

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    Are you getting the condensation while the MH is empty? Or when you are living in it?
     
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  13. Judge Mental

    Judge Mental Funster Deceased RIP

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    I need new glasses..thought that read "confessions in an over cabbed bed" or maybe wishful thinking?:)

    Hope you get it sorted!
     
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  14. irnbru

    irnbru Funster Life Member

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    Only when living in it
     
  15. rb62

    rb62 Funster

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    That would explain excessive condensation. :whistle:
     
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  16. Judge Mental

    Judge Mental Funster Deceased RIP

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    really?...so I was right after all!:)
     
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  17. Boringfrog

    Boringfrog Funster

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    It's tricky when the weather gets colder but you want to stay warm in your MH. We have the temp at about 18° max and wear warm clothes, turn the heating off overnight and if cooking inside have the roof vent open to allow steam out. Ideally you should have vents open at night but it can be impractical. We got around half a pint of condensation off the windscreen and side windows this morning without our exterior screens fitted.
     
  18. DP_JAY

    DP_JAY Funster Life Member

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    In that case it does sound like condensation. Do you have any idea why?
    We had a problem in the rear over bed lockers in ours (only damp when using it in cold weather), I found the problem was caused by the fact that where the top marker lights were fitted,the insulation had a 2" dia hole in it to accommodate the light. The answer was to get it thoroughly dry & then insulate the area with some very thin insulation sheet. No more damp.
     
  19. funflair

    funflair Funster Life Member

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    The warmer you keep the inside the more condensation there will be, if the overcab is not insulated it WILL form condensation on the cold surface it's just natural, try to insulate any surface that is not already insulated. After that as has already been said, plenty of ventilation.

    Martin
     
  20. irnbru

    irnbru Funster Life Member

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    Insulate it with what? Over it or inside the plastic with foam?
     
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