Replies

1. 
   calvin_ | Nov 19, 2000 03:39pm | #1

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   In my own experience, it is more pronounced with little or no air movement on the glass. The alum. being a better conductor of heat and cold only adds to the condition. With no forced air, you might have to rely on ceiling fans to move it around. Areas with a lot of plants, more humidity, cooking all increase the chance of condensation. Moderate the humidity and blow that air around. Best of luck

1. 
   G.LaLonde | Nov 19, 2000 03:47pm | #2

   *Steve, We had exactly the same problem with the windows in our home using those kinds of blinds. The problem is that they are a good insulator and the space between the blinds and the window gets cold and moisture condenses on the glass. We have hot water baseboard heat and what I finally did to cure the problem was to drop the top mount of the blinds down slightly with blocks and keep the blind up slightly at the bottom to allow hot air flow to circulate between the window and the blind.This works very well if you have radiators right below the window.

1. 
   Rob_Rehm | Nov 19, 2000 06:41pm | #3

   *Rain-x the stuff for your car wind shield. It is a wax emulsification that prevents the condensation from getting a hold on the glass.

1. 
   Bucksnort_Billy | Nov 21, 2000 01:23am | #4

   *I've got a similar problem: aluminum windows with a supposed thermal break. The condensation forms on the frame where it meets the painted wooden sill. No blinds, forced air heat and ceiling fans are on. I haven't seen water on the glass, but it is just now starting to get cold in NC. Anybody see this before? Know of a solution?Wipin' it up, BB

1. 
   calvin_ | Nov 21, 2000 03:25am | #5

   *Billy, you and the wife are breathing heavy a little too much, sounds like to me. You 2 keep expelling all that moisture, where do expect it to condense? A little less heavy breathin might be your only answer. Best of luck.

2. 
   Bucksnort_Billy | Nov 23, 2000 12:43am | #6

   *I'm taking all the heavy breathing I can get. Was thinkin' of wearing flippers on our hands and flappin' real hard, but that would kind of cut back on the reason for the heavy breathin'. Maybe we'll hose down with rain-x™™, that might be fun.I need all the luck, BB

3. 
   Scott_Chadbourne | Nov 23, 2000 02:39pm | #7

   *Steve, The principles are the same for your windows as they are for a glass of iced tea - moisture is condensing on the warm side. Showers, cooking, laundry, and just breathing puts moisture laden air into the house. Warm air holds more moisture than cold air. When the warm moisture laden air hits a cold surface it reaches dew point and it condenses or "rains". Some contributing factors may be the radiant heat with no air circulation and the and the high conductive characteristics of aluminum in your window frames. Building a house too tight or utilizing ventless gas fixtures could also cause potential moisture problems. In any case, I hope the combination of radiant heat and aluminum windows nets you a fruit basket from your local power company around Christmas.

2. 
   steve_larson | Nov 23, 2000 02:39pm | #8

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   I have insulated, double pained, windows that are condensing on the inside (not between the pains). The condition shows up during cold climates when we open our double pleated blinds in the morning (if we leave our blinds open over night the windows are fine). There is enough water condensing over night that it seeps down the window and accumulates inside the track and on the window sill causing a moist moldy condition.
   My question is is this an air circulation problem or a window problem, and what would be the best, most cost effective way to correct it? The windows have aluminum frames and the house is heated by electric radiant heat. Any advise to help fix this annoying problem would be appreciated. Thanks, Steve