Roofing Ridge Ventilation

Roofing manufacturers warranties require a minimum of one square foot of ventilation for every 150sf of attic space for traditional systems but only one square foot of ventilation for every 300sf when the ridge vent system is used.

Roofing ridge ventilation.

House roof ridge venting in independent tests against competitive ridge vents air vent products produced the greatest amount of low pressure above the vent which resulted in a greater ability to exhaust air from the attic. Shingle over vents and aluminum vents. A very popular way to provide adequate ventilation in an attic space is with a ridge vent sometimes called a continuous vent. There are two primary types of ridge vents.

Choose one of the following products to meet the recommended exhaust nfva of 528 square inches. It is compatible with 3 or 4 ductwork and includes a 3 to 4 adapter for convenience. This cap features both a back draft damper and bird screen preventing outside air from entering the home and birds and small pests from entering duct work. A ridge vent is a ventilation strip that is placed along the ridgeline of the home.

Rather than interrupting the roof line the way other raised vents do a ridge vent is so low profile that almost unnoticeable. In a hot climate roof vents expel hot air from the roof or attic while relieving the load on the air conditioning system. Roof ridge vents provide a costly system of ventilation that may not be suitable for the checkbooks of some homeowners. Ventsure 4 foot strip heat moisture ridge vent.

27 lineal feet required. 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. Ventsure 4 foot strip heat moisture ridge vent with weather protector moisture barrier. Roof ventilation in a cold climate vents moisture and ensures a cold roof temperature to avoid ice dams.

That is a good indication of the difference in efficiency. The soffit vents act like the air intake for the home. This option might be the updated system which most newer homes use but if you have an older home then you might need the soffit vents too. Proper ventilation is required to validate warranty coverage for most roofing shingles.