Spacing For Roof Vents

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.

Spacing for roof vents.

Center nails between rafters 18 in. For the previous example you would need 20 soffit vents. Soffit vents are one of the most popular intake vent styles. They come in a number of shapes such as squares rectangles and triangles.

Next divide the square footage of vent space required by the square footage of soffit vent you have selected. 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. 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 with weather protector moisture barrier.

A ridge vent is a ventilation strip that is placed along the ridgeline of the home. 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. How to install roof vents. 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. Soffit vents or under eave vents are installed on the underside of the roof that hangs over the siding the eaves. Continuous or individual soffits.

Mark attic roof air vent locations. From the roof s peak.