Attic Insulation Blocking Soffit Vents

Blocked or inadequate roof ventilation air intake openings at soffits or eaves.

Attic insulation blocking soffit vents.

For the same reason insulation shouldn t touch the roof s underside. The soffit vents are now installed but you still need to make sure there s no insulation blocking the new vents. The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow. You can remove insulation from inside the attic or from underneath the soffits.

Vents placed in the underside of the roof s overhang or soffit provide a means for air to get into the attic to help cool it in the summer months. Unfortunately blow in insulation can drift. These specialty vents do not affect the. Remove any insulation from the new vent photo by merle henkenius.

Once it s out of the way. Vent these fans through the roof or soffit. Rectangular roof vents installed on one side of the roof only. If the attic is insulated with fiberglass batts just pull back any that are blocking the flow of air.

Rafter vents or insulation baffles install in any rafter space to create narrow gaps that direct fresh air from the soffit vents to the peak of the roof. Covering up the soffit vents with loose fill or batts which can happen if you stuff insulation along the eaves is a huge no no. Kitchen and bath fans vented into the attic. Rectangular roof vents work best when the wind blows over the top of them rather than into them.

On 2011 10 13 by mod remove insulation blocking soffit air intake in the attic. 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. Because the soffit vents are on the attic floor it s easy to cover them with insulation. This article explains the effects on buildings caused by locked soffit intake vents and we explain how blocked soffit venting causes or contributes to attic condensation moisture and potential mold contamination problems in buildings.

Gil we clear insulation that blocks the soffit air intake from inside the attic manually by hand wearing appropriate respirator and tyvek overalls. 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.