How To Control Humidity In Attic For Storage Purposes

If water is running down the window or objects seem wet to the touch then the humidity is far too high.

How to control humidity in attic for storage purposes.

If you raise the attic temperature the rh in both places would be the same. They have thermostats that turn the fan on at a recommended preset temperature of 100 110 degrees. When the temperature rises the percent relative humidity will fall. If your attic features a window open it as well.

A dehumidifier can remove it. When that same room is cooled the percent humidity will rise. Install electric ventilators and attic fans which remove hot air from an attic. High humidity means greater chances for mold to grow.

You might also install a humidistat that automatically turns your attic fan on to vent out humidity once the level exceeds 70 percent. Storm doors and windows minimize cool surfaces in the winter by separating the interior from cold outside air. After from sealing things up and fixing your pressure balance this is usually the best solution to high humidity in a spray foamed attic. Winter air is by nature not humid so the problem must be condensation related.

Still got high humidity. Once a week open your attic door and leave it open for several hours. Put a dehumidifier up there plug it in set it between 50 and 60 rh and forget about it. Two basic elements of controlling moisture buildup are minimizing cool surfaces and reducing humidity.

This may increase condensation and lower the effectiveness of the insulation. Alternatively install passive vents such as gable soffit and ridge vents which are openings in the roof that allow hot air to escape. So they equalize pretty quickly. 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.

Also because airflow is not uniform significant condensation may still occur. An attic that stays overly humid for days or weeks on end can. Double and triple pane windows also insulate interior glass from the cold. A moist attic means moist insulation and moist insulation is less effective.

Install a dehumidifier in your attic. When it comes to humidity you would be best to have the levels below 50 to avoid mold growth and structural rot. Increased ventilation alone will increase the exfiltration of air lowering the temperature of the attic. You can check the humidity level by observing the windows and the objects in the attic.

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. The difference in the two spaces is the dry bulb temperature.