How Many Roof Vents Gor 2k Sq Ft House

27 lineal feet required.

How many roof vents gor 2k sq ft house.

I need additional exhaust ventilation in my roof with the planned installation of a whole house fan in the attic of my home located in sf bay area. Ventsure 4 foot strip heat moisture ridge vent. Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space. Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space.

Choose one of the following products to meet the recommended exhaust nfva of 528 square inches. Based on your 1100 sq. They should be divided equally between inlet and outlet vents and they can be used in any combination that will work with your roof s design. As a general rule your roof needs 1 square foot of vent area for every 150 square feet of attic space.

For example a 6 by 12 inch soffit vent has 72 square inches which when divided by 144 results in a 0 5 square foot opening. Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge. Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge. And this guideline you ll need a minimum of.

However with only two 1 ft x 2 ft gable roof vents i ll need an additional 7 sq ft of exhaust vents.