Do I Have Adequate Attic Ventilation

He also says that the rectangular metal soffit vents may not be adequate and recommends installing more to eliminate the risk of the roof sheathing rotting.

Do i have adequate attic ventilation. The gross size of the vent is 288 square inches 12 x 24 and the area. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Things have been ok low energy bills house very comfortable. With different climates come different needs to be met.

The ridge vent is cut back 1 inch on either side of the ridgeline which yields a total area of 7 67 square feet of ventilation. Much of the debate stems from the tremendous variation in climate across north america. So using that formula let s say you have a big 12 inch by 24 inch gable end vent with 1 8 inch screen and louvers. Our roofing experts at zimmerman exteriors have installed many roofs in central pa and they.

Do you need an attic fan if you have a ridge vent. Both roof and soffit vents are easy to install in just a few hours. Noticed one of the attic vents was not working. I am having the shingles replaced on the roof of my ranch style house.

How to check attic ventilation. However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the attic. To avoid rotting wood clumping insulation and mold your attic needs to be properly ventilated. His home is 48 feet long and has a ridge vent that measures 46 feet.

Help purchased home 8 years ago with 2 power attic vents. The ventilation that controls moisture from condensation and regulates the temperature in your attic relies on air circulation. Moreover if you have asphalt shingles on the roof attic. Throughout the roofing industry there is a widespread lack of agreement over adequate attic ventilation.

Intake vents located at the lowest part of the roof under the eaves allow cool. Told that the 2 attic power vents are the only attic ventilation i have the house does have vented soffits every other soffit cover is vented. Adequate roof ventilation reduces cooling bills extends shingle life and prevents roof rot and ice dams in winter. The roofer is concerned about attic ventilation and recommends installing a ridge vent and closing off the existing gable vents.

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