High Humidity In House And Attic

Since that time my home has gone from around 45 48 rh to 52 56 rh humidity 73 74 degrees.

High humidity in house and attic.

During the winter months the recommended relative humidity inside a house is anywhere between 30 50 percent. The humidity of a poorly ventilated home is naturally high because the air containing moisture has no way of leaving the house. Hi i am hoping someone might be able to shed some light on a humidity mystery. Ideal attic temperatures and humidity settings aren t always easy to maintain.

Rising damp occurs when moisture from the ground rises through the pores in the bricks and masonry. Jason advani has insulated his attic with spray polyurethane foam and while his heating bills have dropped high humidity remains a problem. Truth many humidity issues are caused by abnormally high moisture not the a c. As planned the r 40 worth of insulation has drastically reduced his heating bill but now he faces another unexpected problem.

Another reason of high humidity in house is poor ventilation. Poor attic ventilation in colder climates can cause frost and condensation to form on the underside of your roof. Rising damp is a rarer but more serious cause of high humidity in a home. Also we have an encapsulated conditioned dehumidifier and supply vent crawl with a radon system.

Poor ventilation in an attic can result in condensation promoting mold growth in the framing elements of the house. I had my attic insulated with blown cellulose and air sealed i hope. The opposite happens in new homes. This can affect your home s structural integrity.

The air conditioner needs to be properly sized and selected with sensible and latent capacity that matches the building design. If there is excessive moisture accumulation in your attic it will condense on cold areas mainly on the underside of your roof deck. But there s more danger behind it than just feeling bad. Freezing and excessively hot outdoor temperatures rain and high exterior humidity levels make it difficult for your.

Keep an eye out for symptoms of rising damp such as mold rotting window frames flaky plaster or damp or wet patches on your walls. See ventilate your home for ideas to improve air circulation in your house. This moist air stays inside the house and when more moisture evaporates into an already moist air the level of humidity goes up. Keep eave vents clear of insulation and make sure you have adequate air flow.

Bad advice if humidity is high it s the air conditioner. It s even worse when there are higher humidity and moisture levels in your home. 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. It can actually rain.

By scott gibson march 18 2019.