Causes Of High Humidity In Attic

Moisture frost and ice buildup on roofing nails.

Causes of high humidity in attic.

Jason advani has insulated his attic with spray polyurethane foam and while his heating bills have dropped high humidity remains a problem. The next evening cools. The problem is lowering humidity. Causes of high indoor relative humidity.

Improperly insulated ductwork and excessive moisture in the air. In summer when the air conditioning is on the reverse happens. Two of the most common causes of attic condensation are high levels of humidity within the living spaces beneath the attic and moisture seeping in through the roof. Either way removing humidity from the air in your attic might be the most cost effective way to handle your problem.

The most common cause of ceiling condensation is an attic with too little insulation and ventilation. High humidity in the attic insulating the underside of the roof deck solves one problem and creates another. What causes high humidity in a house. The next day warms up and pushes air out of the tank leaving moisture behind.

Leaks in the walls and roofs. Furthermore although the ideal humidity levels are less than 60 in the summer those numbers drop to 25 and 40 in the winter. Rising damp is a rarer but more serious cause of high humidity in a home. By scott gibson march 18 2019.

When the highly humid air from the crawl space or basement spreads through the house it increases the overall indoor humidity. Rising damp occurs when moisture from the ground rises through the pores in the bricks and masonry. Having higher humidity during colder months can cause complications too. Low heat load short equipment run time system oversizing.

The gas tank cools off sucks in outside air the moisture condenses. Moisture or frost on the roofs sheathing. High internal humidity drivers humidity being generated inside the home. Warm air holds moisture.

Buckled or damaged roof sheathing. How do you keep it manageable and lessen it when it gets bad. High external humidity drivers humidity entering the home. Water or drip marks scattered on the attic floor.

Final thoughts on condensation on ductwork at the end of the day there are really only two causes for condensation on ductwork. The cool air isn t capable of holding much moisture and increases the relative humidity. Moist or wet insulation. In an attic like this wintertime ceiling condensation can form when cold air from the attic hits your warm ceiling.

Poor or no spot ventilation in kitchen s and bathrooms or it isn t being run. How can i tell if i have moisture problems.