Do I Have Adequate Attic Ventilation

The roofer is concerned about attic ventilation and recommends installing a ridge vent and closing off the existing gable vents.

Do i have adequate attic ventilation.

Roof and attic ventsl protect your house from expensive future repairs. Yeah i m going to leave the attic fan powered off from now on. The gross size of the vent is 288 square inches 12 x 24 and the area. Jones has adequate ventilation along the ridge to ventilate the attic space.

Adequate roof ventilation reduces cooling bills extends shingle life and prevents roof rot and ice dams in winter. 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. Ridge vents alone won t do the job. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

We see many older homes with no attic ventilation and some that have recently had ridge vents installed. Moreover if you have asphalt shingles on the roof attic. I am having the shingles replaced on the roof of my ranch style house. 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.

Help purchased home 8 years ago with 2 power attic vents. Things have been ok low energy bills house very comfortable. Do you need an attic fan if you have a ridge vent. His home is 48 feet long and has a ridge vent that measures 46 feet.

The ventilation that controls moisture from condensation and regulates the temperature in your attic relies on air circulation. Intake vents located at the lowest part of the roof under the eaves. I have the side vents one on each side of the house gabel i m assuming. So from what i m told it looks like i have adequate ventilation already.

How to check attic ventilation. To avoid rotting wood clumping insulation and mold your attic needs to be properly ventilated. 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. 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.

Noticed one of the attic vents was not working. I don t think i have a ridge vent. So now that you know why you need roof ventilation let s talk about why ridge vents alone are not sufficient for properly ventilating your roof.