Spacing For Roof Vents

Center nails between rafters 18 in.

Spacing for roof vents.

Roof vents will provide about half of the vent area and soffit vents the other half. A ridge vent is a ventilation strip that is placed along the ridgeline of the home. 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.

From the roof s peak. Choose one of the following products to meet the recommended exhaust nfva of 528 square inches. Gable vents as the name suggests attach to the gables rather than the roof itself and go through the siding. 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.

Ventsure 4 foot strip heat moisture ridge vent. 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. Continuous or individual soffits. They come in a number of shapes such as squares rectangles and triangles.

Mark attic roof air vent locations. For the previous example you would need 20 soffit 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. 27 lineal feet required.

Soffit vents are one of the most popular intake vent styles. Ventsure 4 foot strip heat moisture ridge vent with weather protector moisture barrier.