Pitched Roof Venting

Roof ventilation in a cold climate vents moisture and ensures a cold roof temperature to avoid ice dams.

Pitched roof venting.

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. Pitched roof ventilation should be accomplished when you have equal amounts of air exhaust on the roof with air intake typically under the eaves. It alleviates moisture in the winter and heat in the summer to extend roof membrane life. The keepa attic vent is used for ventilating attics and or plenum as a roof exhaust vent or as an air intake roof vent.

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. Pitched roof ventilation is beneficial in all climate zones and in every season.

Exhaust vents should be placed on the upper portion of the roof meaning no lower than 2ft from the peak. The building codes and building science for natural roof ventilation however only appeared in the 1940s. The installation of roof vents is a crucial part of roof design because it allows for proper attic ventilation which may help prevent condensation and early aging of your roofing materials.