How To Control Humidity In Attic For Storage Purposes

By adding moisture to the lower floor you increase the partial pressure of the water vapor which pushes it to areas of lower vapor pressure like the attic.

How to control humidity in attic for storage purposes.

Storm doors and windows minimize cool surfaces in the winter by separating the interior from cold outside air. Increased ventilation alone will increase the exfiltration of air lowering the temperature of the attic. Also because airflow is not uniform significant condensation may still occur. When it comes to humidity you would be best to have the levels below 50 to avoid mold growth and structural rot.

This may increase condensation and lower the effectiveness of the insulation. Winter air is by nature not humid so the problem must be condensation related. Proper ventilation will help maintaining a constant temperature in your attic. When the temperature rises the percent relative humidity will fall.

Once a week open your attic door and leave it open for several hours. Two basic elements of controlling moisture buildup are minimizing cool surfaces and reducing humidity. During a hot and humid summer air conditioning will remove some unwanted moisture while cooling an indoor space all the while raising the percent relative humidity in the home or building. When that same room is cooled the percent humidity will rise.

Put a dehumidifier up there plug it in set it between 50 and 60 rh and forget about it. If your attic features a window open it as well. An attic that stays overly humid for days or weeks on end can. They have thermostats that turn the fan on at a recommended preset temperature of 100 110 degrees.

After from sealing things up and fixing your pressure balance this is usually the best solution to high humidity in a spray foamed attic. So they equalize pretty quickly. Install electric ventilators and attic fans which remove hot air from an attic. Alternatively install passive vents such as gable soffit and ridge vents which are openings in the roof that allow hot air to escape.

Install a dehumidifier in your attic. Still got high humidity. A dehumidifier can remove it. If water is running down the window or objects seem wet to the touch then the humidity is far too high.

If you raise the attic temperature the rh in both places would be the same. Double and triple pane windows also insulate interior glass from the cold. High humidity means greater chances for mold to grow. Regularly airing out your attic is a very simple and effective way to prevent the formation of attic moisture.

A moist attic means moist insulation and moist insulation is less effective. If you live in a warmer climate you may want to air out your attic twice a week.