Attic Air Flow Soffit

I took off two soffit vents only to find batt insulation from the vent back up to the inside of the attic.

Attic air flow soffit.

That means air can t flow from the soffit vents to the roof vents. Intake vents located at the lowest part of the roof under the eaves allow cool. The soffit vents allow convective air movement from the soffits of the residence to the ridge vent. Soffits are typically used as the exposed undersurface of the roof overhang above exterior siding.

Baffles are available at home centers. View more soffit products. Our vinyl soffits provide the air intake needed for proper air flow in attics and for controlled temperatures indoors. If the attic is insulated with fiberglass batts just pull back any that are blocking the flow of air.

I don t see a path for air flow. This continuous air flow prevents rot under. I have about three feet of slopped ceilings in each room that mirror the roof slope and the insulation is between the roof and the room ceiling. Soffit vents allow outside air to enter the attic while vents along the peak of the roof or in the gables exhaust air already inside the space.

In addition insulation baffles must be installed at the point where the attic floor meets the roofline to prevent the attic insulation from migrating into the cavities and restricting the airflow from the soffit vents. If your attic is well insulated the insulation might be plugging the spaces between rafters just above exterior walls. Attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside. The soffit vents are now installed but you still need to make sure there s no insulation blocking the new vents.

Aluminum or vinyl soffits eaves installed over plywood soffits that don t have venting holes. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. If there s blown in insulation like ours rake back the fluffy stuff with a 3 or 4 ft long 1 x 6 or use a garden rake or hoe. Never cover attic soffit vents with insulation use rafter vents and soffit vents to maintain airflow.

Insulation often clogs the space between the rafters blocking air from traveling to and from the soffit area. The solution is to add baffles which allow air to flow past the insulation photo 9. It s the ventilation support you need to protect your home from extreme temperatures and moisture. Conversely if there are open soffit vents to allow free flow of air into the attic or cathedral ceiling roof space the negative pressure or vacuum created by the exiting attic air is more easily satisfied by inflowing cooler more dry outdoor air than it is by leaking air from the occupied space.