Spacing For Roof Vents

Continuous or individual soffits.

Spacing for roof vents.

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. Next divide the square footage of vent space required by the square footage of soffit vent you have selected. 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.

Center nails between rafters 18 in. Choose one of the following products to meet the recommended exhaust nfva of 528 square inches. Soffit vents are one of the most popular intake vent styles. Ventsure 4 foot strip heat moisture ridge vent.

From the roof s peak. Mark attic roof air vent locations. For the previous example you would need 20 soffit vents. They come in a number of shapes such as squares rectangles and triangles.

How to install roof vents. Ventsure 4 foot strip heat moisture ridge vent with weather protector moisture barrier. 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. Roof vents will provide about half of the vent area and soffit vents the other half.

It is important that air movement occurs and is not impeded by any framing members of the. Drive nails up through the sheathing and shingles to mark roof air vent locations.