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Old 07-02-2013, 07:33   #1
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Condensation on Refrigertor Cover

After 3 winters in the Bahamas, for the first time, I am having excessive condensation on the cover of my refrigerator. What would cause this?

Last year, I used a sheet of foil-backed bubble wrap to insulate the top of the food storage area. This year, I am using a thinsulate pad. Every morning, the teak cover of the frig is wet, and I also notice condensation on the thinsulate pad. So, I'm thinking the thinsulate must be the cause, but my husband disagrees.

Thanks for any ideas/opinions.....
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Old 07-02-2013, 07:56   #2
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Re: Condensation on refrigertor cover

Check the entire rubber seal around the door, if it has not deteriorated/crimped/broken/obstructed/punctured or leaking. Mauritz
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Old 07-02-2013, 08:24   #3
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Re: Condensation on refrigertor cover

Check all seals, and check also the insulation of the box itself.
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Old 07-02-2013, 09:21   #4
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Re: Condensation on refrigertor cover

Unfortunately, I think your husband is right. The reason you are getting condensation is that the insulation under the teak is not thick enough, so the teak (not a particularly good insulator in itself) gets cold and, unless the air outside is very dry, you get condensation. The only fix I can think of is to add more insulation under the teak. A block of XPS (extruded polystyrene) foam glued under the lid should work much better than bubble wrap or Thinsulate. Make it as thick as practical. You'll lose some refer space but your teak won't mold and you will use less electricity to keep the refer cool.
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Old 07-02-2013, 12:55   #5
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Re: Condensation on Refrigertor Cover

Thinsulate is basically fiberfill batting, so there is air movement THROUGH the material. That will bring moisture which will condense on something cold. Foil and bubble wrap are impervious, there's no air moving throgh them, so no moisture, no condensation. You could foil or plastic wrap the thinsulate, or buy a new sheet of bubble wrap.

That you're getting condensation might also mean the gasket on the box is leaking air. The usual test for that is to close the "door" with a fresh dollar bill across the gasket. if you can easily pull the bill out, the gasket isn't seating tight. Sometimes a little ArmorAll will soften it up and get a better seal, sometimes it needs replacing.
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Old 07-02-2013, 13:24   #6
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Re: Condensation on Refrigertor Cover

The surface temperature of the cover is dropping below the dew point of the air. I know that is the technical reason which does not help. More insulation which reduces the transference of cold is the solution. Look for high R-Value(low heat conductance) materials.

Scroll down to list of R-values for materials....
http://en.wikipedia.org/wiki/R-value_(insulation))
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Old 07-02-2013, 15:56   #7
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Re: Condensation on Refrigertor Cover

I agree with the analysis from the posters above. And what the condensation means right now is that you're losing precious cold from from the refrigerator; it's seeping right through the top of the refrigerator.

Until you get somewhere that you can get supplies (and have time) for a more permanent fix, just putting a towel or blanket on top of the refrigerator counter will help considerably. Here are several other ways to fairly simply add extra insulation to the top and sides, without totally rebuilding the box:

4 Simple Ways to Add Extra Insulation to Your Refrigerator

Good luck!
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Old 09-02-2013, 07:16   #8
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Re: Condensation on Refrigertor Cover

Thank you all for the very helpful suggestions. We are going to try them all!
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Old 15-02-2013, 13:27   #9
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Re: Condensation on Refrigertor Cover

It's possible mildew got into the insulation inside the door and devoured it. If it comes apart, check that out. If not, could you drill a small hole and use one of those squirt-in foams to re-insulate it?
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