Spacing For Roof Vents

Soffit vents or under eave vents are installed on the underside of the roof that hangs over the siding the eaves.

Spacing for roof vents.

Soffit vents are one of the most popular intake vent styles. How to install roof vents. Ventsure 4 foot strip heat moisture ridge vent. Next divide the square footage of vent space required by the square footage of soffit vent you have selected.

Ventsure 4 foot strip heat moisture ridge vent with weather protector moisture barrier. It is important that air movement occurs and is not impeded by any framing members of the. You need to have an equal number of vents located at the bottom of the attic or under the roof easement as you have at the top of the attic near a gable or ridge. Prior to installing the ridge vent a 1 inch wide strip of roof decking is cut out along both sides of the ridgeline to allow for air movement through the vent.

Roof vents will provide about half of the vent area and soffit vents the other half. For the previous example you would need 20 soffit vents. They are easy to install under the roof s overhang which is known as the soffit are generally hidden from sight and provide excellent protection from weather outdoor debris and pests while still allowing air to flow into the attic. They come in a number of shapes such as squares rectangles and triangles.

Drive nails up through the sheathing and shingles to mark roof air vent locations. A ridge vent is a ventilation strip that is placed along the ridgeline of the home. Mark attic roof air vent locations. From the roof s peak.

27 lineal feet required. Continuous or individual soffits.