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.

Next divide the square footage of vent space required by the square footage of soffit vent you have selected. It is important that air movement occurs and is not impeded by any framing members of the. Ventsure 4 foot strip heat moisture ridge vent. A ridge vent is a ventilation strip that is placed along the ridgeline of the home.

27 lineal feet required. Ventsure 4 foot strip heat moisture ridge vent with weather protector moisture barrier. Continuous or individual soffits. Soffit vents are one of the most popular intake vent styles.

Gable vents as the name suggests attach to the gables rather than the roof itself and go through the siding. Drive nails up through the sheathing and shingles to mark roof air vent locations. Choose one of the following products to meet the recommended exhaust nfva of 528 square inches. 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.

Center nails between rafters 18 in. Roof vents will provide about half of the vent area and soffit vents the other half. 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. Mark attic roof air vent locations.

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. They come in a number of shapes such as squares rectangles and triangles.