High Humidity Attic Summer

In an attic like this wintertime ceiling condensation can form when cold air from the attic hits your warm ceiling.

High humidity attic summer.

And the extra heat is not just a summer concern come winter hot attic air can melt snow on the roof during the day only to refreeze when temperatures drop overnight creating ice dams that lead. Attic insulation and ventilation go hand in hand. Jason advani has insulated his attic with spray polyurethane foam and while his heating bills have dropped high humidity remains a problem. An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate.

The most common cause of ceiling condensation is an attic with too little insulation and ventilation. Why is that important. High indoor humidity in summer after replacing attic fiberglass batts with celluose insulation. June 2016 in indoor air quality.

Jason advani jason advani thought he was on the right track when he insulated the bottom of the roof deck in his walk up attic with closed cell spray foam. If there is excessive moisture accumulation in your attic it will condense on cold areas mainly on the underside of your roof deck. So if no sealing was done in the attic before cellulose was blown in then your pulling humidity from the attic into the envelope. During the winter months the recommended relative humidity inside a house is anywhere between 30 50 percent.

An unventilated attic can reach 150 degrees in the heat of summer 50 degrees higher than it should be. The concern in summer is heat. Health issues caused by high humidity high levels can cause discomfort for most people particularly during summer. However when it s humid out the environment interferes with this cooling process as our sweat does not evaporate easily in humid weather.

As planned the r 40 worth of insulation has drastically reduced his heating bill but now he faces another unexpected problem. They keep your home cooler in the summer warmer in the winter and free from damage caused by moisture. And it can cause your air conditioner to work harder than it needs to and send your energy bills soaring with the temperature. Extra heat build up under the roof deck can cause your shingles to deteriorate much faster sometimes cutting their life expectancy in half.

Freezing and excessively hot outdoor temperatures rain and high exterior humidity levels make it difficult for your attic fan and heating and cooling systems to keep up with desirable attic. The main goal is to keep your attic temperature the same as the outside air temperature in the summer as well as in winter.