Water tank Sweating

tims5377

New member
In my ford transit, my water tank is going to be going beneath a cabinet that supports a murphy bed. I have a Northwest Conversions 20 gallon wheel well tank (Its pretty awesome). As it is currently built, it fits reasonably tight to the wall and there isn't much room for air flow. I am concerned that when I am filling up, from home or elsewhere, the tank will sweat quite a bit. I don't want the condensation getting down under my flooring or into the wall or anything.

Is this something that I should actually be concerned about? How do you folks manage this?

My thoughts are:
- A Drip tray that could drain towards the rear
- Cover the tank in kilmat (rubber sound deading/insulation mat)
- I know this could be solved by putting the tank outside, but I want it to stay liquid for winter trips!

Here is where the tank is going to live

20200527_065330 (1).jpg
 

4x4sporty

Member
My tank is under my couch\bed and I haven’t had any problems with condensation. Also my power supply is under there and makes some heat and I have had no problems even in winter.
 

Alloy

Well-known member
Condensation is caused by a combination of temp and humidity. People in different location will experience different amounts of condensation.

It would be a good application for Reflecitx bubble wrap with tapped seams.

You'll want make sure all of the water drains out of the tank or things will start to grow in it.
 
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A simple drip pan now is a easy way to deal with a problem that you may or may not have down the road. Insulating it may trap the any moisture in and harbor mold/mildew over time.
 

eporter

Adventurer
A drip tray will also be great insurance in case it leaks. Maybe find a baking pan that’s a similar size, custom sheet metal, or even a thin plywood tray caulked and sealed. Better it gets wet than under your flooring
 

Alloy

Well-known member
A simple drip pan now is a easy way to deal with a problem that you may or may not have down the road. Insulating it may trap the any moisture in and harbor mold/mildew over time.

From experience I can tell you that a tray will be full of slimy munge....dust/dirt gets in the pan then adding water it makes for a wonderful concoction.
 

luthj

Engineer In Residence
An easy fix is to put 1/4" of closed cell foam on the tank. Generally good air circulation keeps condensation down. The only time you will see major condensation, is when you are filling the tank from a cool/cold source (underground supply) in hot humid weather.
 
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