How much does shingle temperature really rise if the insulation is right at the roofline and the attic isn t vented.
House roof shingles sweat in summer.
For most floors condensation is the main reason for the sweating especially in warm weather.
On hot days you may notice water droplets forming on your visible air ducts and wonder whether this is normal.
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Moisture occurs when heated air inside the home rises up to the roof where it meets the colder temperatures of outside air.
What s the truth about this claim.
It s no surprise that this tends to occur more in colder months when home heating is more common and intense.
When warm humid air from outside comes into contact with the cold concrete the air rapidly cools and condenses on the surface causing the wetness.
The rapid cooling leads to immediate condensation.
With just the right mix of inside temperatures accompanied by outside temperature then adding the outside humidity the windows with low e shield can develop condensation.
What you see is condensation also known as ductwork sweating.
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Summer is the time of year when your air conditioning unit has to work the hardest to cool your home.
Prolonged periods of high moisture in the house can lead to mold and the walls may even begin to rot.
This is sometimes common in older houses that do not have the proper vents or fans to eject excess moist air.
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Roof condensation has a very specific cause.
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The low e coating minimizes the heat transfer from inside so the outside glass surface can cool notably below the outside air temperatures.
Fortunately it s easy to find out because the florida solar energy center fsec has done the research.