Flat Roof Attic Ventilation

Intake vents located at the lowest part of the roof under the eaves allow cool.

Flat roof attic ventilation.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. Most effective ventilation uses a ridge and soffit continuous ventilation system but even. Dia aluminum keepa static vent for flat roofs in white model kv 12 wt 66 34 66 34. In a hot climate roof vents expel hot air from the roof or attic while relieving the load on the air conditioning system.

The breather vent allows for this moisture to escape while eliminating any moisture from entering. Roof ventilation in a cold climate vents moisture and ensures a cold roof temperature to avoid ice dams. Ft of vent space half dedicated for air intake in the soffits and the other half for exhaust on the roof. Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator.

They operate with a billow that opens and closes according to the moisture content within the attic area. Another common flat roof vent is the mushroom vent. Roofing attic ventilation. Set your store to see.

Enter square footage calculate or enter the square footage of the attic or area to be vented. Effective attic ventilation systems reduce damaging heat and moisture in your attic promote energy efficiency by helping to reduce the load on your air conditioner in the summer and also reduce the risk of ice dam formation on your roof. Good attic ventilation is important for preventing ice dams in the winter. Attic must have 5 sq.

Static roof line vents are effective for ventilation but generally aren t recommended due to issues with leaks. Removal of excess heat and moisture will help the life of the roof and will help the functionality and efficiency of the hvac systems. The building codes and building science for natural roof ventilation however only appeared in the 1940s. Flat roof ventilation is achieved by creating air changes to the attic or plenum.

3 mushroom roof vent. Ventilation is crucial to these areas as they affect the building as a whole both inside and out. These can be ridge vents wind turbines or the flat vents your roofer wants to install. See the benefits of attic ventilation a new roof is more than just shingles.

Soffit vents may leave air trapped at the top of your attic. Active ventilation 12 in. Gable vents may circulate air through only a small percentage of your attic.