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Post Info TOPIC: Condensation in a van


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Condensation in a van


I own a cruise liner A Van and the front boot get a lot of condensation that drips into boot. Does anyone know how I can stop this?



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We had condensation in the car, especially the rear as there was no insulation. We sleep in it. Acoustic foam insulation stopped the condensation.

 

This thread is on acoustic properties, but acoustic foam is really good for thermal insulation.

 

https://thegreynomads.activeboard.com/t65443581/car-acoustic-insulation/

 

Glass info: Heat loss through glass is 6 watts per degree C per sq metre per degree difference in temperature.



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DampRid from the green shed. When we park up van we open all cupboards and sit the DampRid container in a 2 litre container in one of the high cupboards. Amazing how much water gets collected.

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Whenarewethere wrote:

Glass info: Heat loss through glass is 6 watts per degree C per sq metre per degree difference in temperature.


 Stop it WAWT, your making my head hurt.............disbeliefdisbeliefdisbelief



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I am not familiar with the A Van layout or confuguration.
Is the boot area you mention separate from the general interior and sleeping area of the van?
Does it share the same air space?

Ken

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Here is an Avan Cruiseliner. The boot is the bit at the front.



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PeterD
Nissan Navara D23 diesel auto, Spaceland pop-top
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NSW Central Coast.

 



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Ventilation and air movement! Maybe a solar fan on
Roof or above fridge roof vent ? To pull air out ? If driving ? Leave a few windows open
., Leave window open at night to vent condensation!! Plus it keeps temps similar. Preventing condensation!!

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As said above, 'ventilation & air movement'.

 

The problem is the warmer the air the more moisture the air holds. If there are cold surfaces the moisture will condense on those surfaces.

 

The options are:

1. Inside & outside temperature similar.

or

2. Remove moisture from the air.

or

3. Insulate to enough R rating for the difference in temperature.



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Clums wrote:

I own a cruise liner A Van and the front boot get a lot of condensation that drips into boot. Does anyone know how I can stop this?


 I would be more inclined to think you have a leak in the Boot "Lid" 

Water ingress/Leaks though the lid Hinge or seals is common in Avan Cruiseliners,

 



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Mike & Ellie



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Thank you everyone who took the time to answer. at first I did think it was a leak but it only fills up the channel which then dribbles in and when I open the boot the metal lid is always covered in condensation. I will try the insulating foam and see how that goes. Thanks again. Clums.



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Our pop top caravan always gets condensation dripping from all metal surfaces inside the van when its cold weather. The only easy way to overcome it is to put the air conditioner on all night so it dries the air.



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Derek Barnes


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jayco had a issue in their silverline series were a metal extrution was exposed to the outside and the inside, the fix was foam tape that insulated the cold metal from the warm moist air inside simple and effective in that case

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One way to create rust in body . With wet foam
., If theres any moisture forming in body ? Other than sealing . I find the best solution is to let it out with weep holes . The old Holden Statesman had condensation issues ! Due to large boot . The fix was two 1/8 holes either side of the lowest part of boot . Let the moisture out ! Great fix on a brand new vehicle at the time !!

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If it is painted correctly then it's not an issue, but also look at how water runs through & out of the area. Don't stick the foam all the way to the bottom of panels. Allow for drainage.

 

For instance, when I put insulation in the doors I placed it on the back of the trim panels, it was easier (due to some FW a door has been replaced so I didn't have to redo the door again, as the car got a new door).

 

If one is interested in keeping a vehicle or caravan for decades you are probably by nature doing thorough inspection & maintenance. My previous 2 vehicles were 25 & 18 years old. If all goes well & I don't go EV we will keep our current car until I need a wheelchair!

 



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Clums wrote:

Thank you everyone who took the time to answer. at first I did think it was a leak but it only fills up the channel which then dribbles in and when I open the boot the metal lid is always covered in condensation. I will try the insulating foam and see how that goes. Thanks again. Clums.


 I would say that the water dribbleing in,  is the water that then forms the condensation.  Fix the leak.  

The leaking boot lid is common in Avan Cruiseliners.



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Mike & Ellie



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Also TRY putting a cover on outside when stopped ? An old blanket, tarp etc ? Its the cooling or heat difference . Less heavy breathing may help ?! Lol


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What are you storing in the trunk, water/sullage hoses or the like will created condensation.

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Our block of units replaced timber with aluminium windows. As the window frames have no thermal break, in winter due to being warm inside & when it is humid we get a lot of condensation on the frames. Sometimes I can mop up a cup of water from a single window.

 

The old timber window frames never had condensation issues, but had rotted away over the decades.

 

Northern Europe have brilliant windows, thermal breaks & at least double glazing. My relatives have replaced their windows with triple glazing, which is common on new buildings.

 

If you can cover metal which doesn't have a thermal break it will help reduce condensation.



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Over on East Island ( NZ) they had a scheme like we had here with insulation ( batts) they put plastic sheeting under floor , insulation in roof . From what I saw looked like paper with mushed paper inside ? Then the fitted solar fans that either pulled warm air from
Roof , or extracted air from
Room to roof . Fitted vents under eaves . This kept the ambient temps constant . Keeping condensation away !! Till then windows would have water pool on window sills every morning !! Actually kept house a little warmer over night !! Keep in mind temps get down to -6* frost there . Even though sunny warm
Days ! In Alaska, northern US they have moisture barriers ( plastic sheet). Between outer walls as well as insulation !!

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Whenarewethere wrote:
Glass info: Heat loss through glass is 6 watts per degree C per sq metre per degree difference in temperature.

 There is no glass in the boot of an Avan Cruiesliner. That means most of the replies to this thread have little bearing on the OP's problem



-- Edited by PeterD on Thursday 14th of April 2022 10:42:08 AM

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No condensation with Insulation.



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Knowledge in one field can simply be applied to another.



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We have an Avan caravan, the boot has always leaked like sieve.

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I always like fixing & improving manufacturers' products. In one way or another it will be possible to fix their cost cutting & design failures, improving the product to a standard that I can accept.



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86GTS wrote:

We have an Avan caravan, the boot has always leaked like sieve.


 You are not being specific here. Is your van a standard type a van or is it the A-liner style? The boots are somewhat different.



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I think in some cases its the heavy breathing ?

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Aerobics



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I listened to all the comments and decided to put a thin rubber adhesive strip inside the channel. This has worked really well there must have been a gap that allowed air into the boot which created the condensation. But since putting the strip in place I have had no condensation. No change in air temp. Thanks to everyone who contributed to the discussion. Grey nomads is always the best place to go for info. Clums



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