Low Humidity In Attic

Most attics are baked by the sun.

Low humidity in attic.

As warm air rises some of this air enters opening at the top of the house and passes into the under roof area. 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. Humidity settings are another issue that can make or break the performance of your heating and cooling systems and your attic ventilation. If you do then it means that the attic is too dry.

What s going on here as i said the answer is almost always the same. 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. These are little devices a bit like thermometers but they measure humidity levels rather than temperature. The normal indoor humidity range in winter should be 15 to.

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. High temperatures inside your attic shorten the life span of shingles. You can test this by touching something metallic in the attic and see if you receive a jolt of static electricity. During the winter months the recommended relative humidity inside a house is anywhere between 30 50 percent.

Chase around vent pipe open to attic. There is an air leak that brings humid interior air or air from a basement or crawl space into the attic. You can add more vents over the soffits. The solution was to install more attic insulation do some required air sealing on the second floor and install intake and exhaust ventilation in the attic.

If i enter an attic and it s moist and moldy i immediately think this is odd. Take its temperature. Excessive heat deteriorates items you store in the attic and can cause moisture problems in your house. If there is excessive moisture accumulation in your attic it will condense on cold areas mainly on the underside of your roof deck.

A condition commonly referred to as the stack effect is responsible for moisture migration into under roof areas. Check out the thermopro tp50 on amazon. Proper ventilation will help maintaining a constant temperature in your attic. In rare cases the humidity level may be too low.

An attic is an oven and ovens are dry.