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.
How many roof vents gor 2k sq ft house.
27 lineal feet required.
Based on your 1100 sq.
As a general rule your roof needs 1 square foot of vent area for every 150 square feet of attic space.
6 measure the radius of round vents or take half the diameter of the.
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.
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.
You mention exhaust vents shouldn t exceed intake vents in the roof for proper circulation.
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.
Thus if your attic is 450 square feet you need roof vents equaling 3 square feet.
However with only two 1 ft x 2 ft gable roof vents i ll need an additional 7 sq ft of exhaust vents.
Choose one of the following products to meet the recommended exhaust nfva of 528 square inches.