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 > Condensation on upper inside walls ral cold morn

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luberhill

syracuse

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Posted: 10/01/18 07:02am Link  |  Quote  |  Print  |  Notify Moderator

So last night we had a cold rainy night, got down to 40 and I kept the inside around 65 but then turned it to 70 when we woke
I notice if you put you fingers on what the call “ wallboard” up close to the ceiling it feels cold and damp .
Assume it’s because the outside walls are so cold and it’s hot inside ??


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2oldman

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Posted: 10/01/18 07:10am Link  |  Quote  |  Print  |  Notify Moderator

..and there's a source of moisture inside.

donn0128

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Posted: 10/01/18 07:16am Link  |  Quote  |  Print  |  Notify Moderator

Typical for lack of circulation i side.


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SidecarFlip

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Posted: 10/01/18 07:17am Link  |  Quote  |  Print  |  Notify Moderator

Always and I mean always run a vent ceiling fan and keep a window open. Damp wallboard means damp under the wallboard where you cannot see it too.


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luberhill

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Posted: 10/01/18 07:23am Link  |  Quote  |  Print  |  Notify Moderator

Opening a window at 40’degs outside ?
Ceiling fan on all the time also would take all the heat out..
Guess that doesn’t make sense to me..
Would I be better off going back to letting the ac fan come on when the furnace comes on

SidecarFlip

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Posted: 10/01/18 07:28am Link  |  Quote  |  Print  |  Notify Moderator

luberhill wrote:

Opening a window at 40’degs outside ?
Ceiling fan on all the time also would take all the heat out..
Guess that doesn’t make sense to me..
Would I be better off going back to letting the ac fan come on when the furnace comes on


How it works, like it or not. You have to evacuate the moisture you, your occupants and everything else is making inside, to the outside or your RV will rot from the inside out.. It's not a house with good insulation so there is a temp difference between the outer and inner walls and you get condensation.

Vent it agressively or pay the price of rot down the road.

Your choice. Pay now or pay later.

2oldman

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Posted: 10/01/18 07:28am Link  |  Quote  |  Print  |  Notify Moderator

A recirculating ceiling fan keeps air moving, which helps. But if your RV is small enough, just breathing will condensate.

luberhill

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Posted: 10/01/18 07:44am Link  |  Quote  |  Print  |  Notify Moderator

So can I just open a ceiling vent in the bathroom to allow movement ?
It just seems opening a window when it’s 49 degs and raining out is adding to it
Having to run the ac fan all the time would have me selling this thing tomorrow.
Running a vent fan all the time would be heating the outside and cause the furnace to run all the time...
Has to be a better way

Dave H M

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Posted: 10/01/18 07:53am Link  |  Quote  |  Print  |  Notify Moderator

Running the ac fan will just circulates air right?

You could get the same results with another kind of fan.

Bottom line, you have to move that moisture out side some way.

SageCrispin

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Posted: 10/01/18 07:58am Link  |  Quote  |  Print  |  Notify Moderator

You have to kind of play the averages and stay aware of the situation. You will see mildew long before things start to "rot". Things can be damp in the morning, but we make sure we dry it out during the course of the day. Check cupboards and back corners of closets. Clothes can actually get wet if you let it go too long. Just watch the corners and edges and keep the air moving as best you can when you can. We kept "damp rid" type stuff in the closets and bathroom when we were full time. Also, below freezing you have to unhook your water and drain the hose over night. When not using the RV, I keep the roof vents and the little window above the sink open and the fans set to come on around 80 degrees.


We've run out in the house, but the RV has two.

Damon Challenger.
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