Why Does My Attic Get Humid At Night

Outside air moves into the attic leaves its moisture behind amd moves on.

Why does my attic get humid at night. Hi everyone i m a newbie here. Building scientists have recently discovered that in the typical home well over half the incoming air first passes through the attached garage crawl space basement or attic where air becomes polluted by a number of different sources. Now the humidity will likely read close to 100 if it hits 100 and tries to exceed that fog will form. I put in soffit vents all around.

If you seal up the leaks on lower floors you may do without the humidifier and stay comfortable. Condensation accumulates and leads to structural problems such as dry rot and deterioration in wooden beams. An attic that stays overly humid for days or weeks on end can eventually lead to leaks. Since the air cannot come in direct contact with the cold coils the cooling and dehumidification of air are compromised.

You need minimum 27 of ridge vent with equal intake ventilation. You are approaching the 43 deg dew point and some colder surfaces like windows you will get condensation there. It s easy to check and clean if necessary. A hot attic is bad for several reasons.

You have a 860 sq ft attic. Looks like a great site. Excessive heat deteriorates items you store in the attic and can cause moisture. These can include installation of seamless gutters and downspouts.

A moist attic means moist insulation and moist insulation is less effective. The cobra vent can become clogged but it s not likley. The humidity will be low as the temperatures warm up. The roof has 3 passive vents on the back of the house and the roofer added ridge vents.

The issue in the attic is that at 48 degrees f. The best solution for controlling moisture is at its source. Now at night when things cool off the cooling air can will reach its saturation point. You d need a minimum of 9 16 x8 soffit vents or 54 of continuous soffit vent or 54 vented drip edge.

It s a hip roof. Seen some posts about this subject and i have a similar issue with high humidity in my attic that is driving me crazy. The moisture in the air will rise even if the humidity stays the same. A couple of years ago had a new roof put on.

That s just the properties of moist air.