Low Humidity In Attic

Air leaks in the lower part of the house in the basement for example allow outside air with low humidity to get into the house.

Low humidity in attic.

You can add more vents over the soffits. If i enter an attic and it s moist and moldy i immediately think this is odd. Chase around vent pipe open to attic. High temperatures inside your attic shorten the life span of shingles.

If you re not quite sure whether or not your attic has a problem with too much humidity the best way to check is with a hygrometer. What s going on here as i said the answer is almost always the same. Most attics are baked by the sun. As warm air rises some of this air enters opening at the top of the house and passes into the under roof area.

Ideally the humiditiy level should be between 35 and 50. Proper ventilation will help maintaining a constant temperature in your attic. These are little devices a bit like thermometers but they measure humidity levels rather than temperature. There is an air leak that brings humid interior air or air from a basement or crawl space into the attic.

During the winter months the recommended relative humidity inside a house is anywhere between 30 50 percent. Check out the thermopro tp50 on amazon. An attic is an oven and ovens are dry. The results are that the attic temperature is close to the outside temperature but the relative humidity is significantly higher in the attic than either the indoor or outdoor readings.

The normal indoor humidity range in winter should be 15 to. The moisture was rising with the warm air of the home as it escaped past the insulation and it was trapped in the attic because there was no roof ventilation. A condition commonly referred to as the stack effect is responsible for moisture migration into under roof areas. If you do then it means that the attic is too dry.

You can test this by touching something metallic in the attic and see if you receive a jolt of static electricity. Advani is adding moisture to the air with a humidifier and that hot air rises finding ways of getting into the attic sullivan says. Humidity settings are another issue that can make or break the performance of your heating and cooling systems and your attic ventilation. If there is excessive moisture accumulation in your attic it will condense on cold areas mainly on the underside of your roof deck.

Take its temperature.