Why Is My Attic So Humid

Attic temperature and humidity levels are also important.

Why is my attic so humid. If it doesn t evaporate fast enough the moisture content of the wood increases providing a cozy growing environment for mold. Our dehumidifier mostly dried out the attic so now it costs far less than the original 100 month to operate. That s just the properties of moist air. Rising damp occurs when moisture from the ground rises through the pores in the bricks and masonry.

Condensation accumulates and leads to structural problems such as dry rot and deterioration in wooden beams. You are approaching the 43 deg dew point and some colder surfaces like windows you will get condensation there. These can include installation of seamless gutters and downspouts. If you raise the attic temperature the rh in both places would be the same.

Why does condensation mold form in my crawlspace. You need minimum 27 of ridge vent with equal intake ventilation. The warm humid air from your house particularly the bathroom rises up into the attic and condenses on the cold roof sheathing. 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.

But we can t leave it a week without the dehumidifier running that s all it takes to. The issue in the attic is that at 48 degrees f. The difference in the two spaces is the dry bulb temperature. The cobra vent can become clogged but it s not likley.

By blowing new air into your attic you might positively pressurize the space. You may become dehydrated as you lose moisture through your skin. The best solution for controlling moisture is at its source. A moist attic means moist insulation and moist insulation is less effective.

An attic that stays overly humid for days or weeks on end can eventually lead to leaks. Then there s the question of pressure. Rising damp is a rarer but more serious cause of high humidity in a home. You have a 860 sq ft attic.

It s easy to check and clean if necessary. If the problem is the result of water or moisture penetrating the foundation or floor slab there are many remedial actions which may help. You d need a minimum of 9 16 x8 soffit vents or 54 of continuous soffit vent or 54 vented drip edge. Heat exhaustion can be a result of a living in a too humid home.

So if you don t run your air conditioner much during the spring and fall humidity will continue to build up in your your attic. Because dry air that makes it inside your home is never going to be more humid it s going to stay dry. Why is that a problem.