House Roof Ventilation Design

When installed as part of a properly balanced when installed as part of a properly balanced attic ventilation system gaf cobra exhaust vent is a shingle over exhaust vent installed at the roof ridge that helps exhaust excess heat and moisture from your attic.

House roof ventilation design.

Intake vents located at the lowest part of the roof under the eaves allow cool. Vent roofs with steeples towers or cupolas can be found in different buildings from barns to cathedrals. Ventilation openings shall have a least dimension of 1 16 inch 1 6 mm minimum and 1 4 inch 6 4 mm maximum. Roof vents comprise intake and exhaust vents that permit free movement of the air in the ventilation spaces.

The goal of roof ventilation is to get fresh relatively cool air into the attic and vent out hot moist air. While designing the roof it is essential to choose the right number of intake and exhaust vents. Roof ventilation in a cold climate vents moisture and ensures a cold roof temperature to avoid ice dams. Enclosed attics and enclosed rafter spaces formed where ceilings are applied directly to the underside of roof rafters shall have cross ventilation for each separate space by ventilating openings protected against the entrance of rain or snow.

Sure installing roof vents for older homes can reduce your hot air during the summer but there are probably more low risk cost effective ways to increase your home s energy. The right balance of intake and exhaust vents can enhance the life of the roof system and improve energy efficiency. The building codes and building science for natural roof ventilation however only appeared in the 1940s. Good roof ventilation can do this but shingle color sun exposure and insulation are exponentially more important to overall energy efficiency than ventilation.

Enter square footage calculate or enter the square footage of the attic or area to be vented. 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. The shape of your roof square footage and the climate where you live all contribute to the type of roof ventilation system needed for your tiny home. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

A good ventilation system should be energy efficient prevent unwanted moisture and be cost efficient in direct relation to the size of your house.