Pitched Roof Venting

The keepa attic vent is used for ventilating attics and or plenum as a roof exhaust vent or as an air intake roof vent.

Pitched roof venting.

The keepa attic vent is built exclusively for flat roof ventilation roof pitch is 2 12 or less. Vent roofs with steeples towers or cupolas can be found in different buildings from barns to cathedrals. The intent of roof venting varies depending on climate but it is the same if you re venting the entire attic or if you re venting only the roof deck. The enclosed void of a warm pitched roof may not require to be ventilated but this is usually subject to the requirement to install a fully sealed air and vapour control layer avcl in conjunction with an air open roof covering.

Advantages of proper roofing ventilation. Pitched roof ventilation is beneficial in all climate zones and in every season. Theory behind venting ice dams form when a home s escaping heat warms the roof sheathing and melts the underside of the snow layer on the roof. The building codes and building science for natural roof ventilation however only appeared in the 1940s.

Exhaust vents should be placed on the upper portion of the roof meaning no lower than 2ft from the peak. Roof ventilation in a cold climate vents moisture and ensures a cold roof temperature to avoid ice dams. It alleviates moisture in the winter and heat in the summer to extend roof membrane life.