Address:
118 Mapache Portola valley Ca
Total Vents:
28
Where do I install vents graphic
Vent Placement Recommendations
High / Exhaust Vents Needed:
(Within 3' of Ridge Assembly)
14
Low / Intake Vents:
(Within Lower 1/3 of Attic)
14
Comp Roof Drawing
Total Square Feet of Attic Space to be Ventilated
Total Square Feet of Attic Space to be Ventilated:
4,000
Code Required Method:
1/150 (EXCEPTION)
Calculation:
4,000 ÷ 150 = 26.67 sq. ft. of Code Required Ventilation
Convert square feet of code-required ventilation to square inches
Square Feet of Code Required Ventilation:
26.67
Calculation:
26.67 x 144 = 3,840.48 sq. in. of Code Required Ventilation
Square Inches Provided:
(28 x 98.75) = 2,765 sq. in.
Composition shingle
Low Profile (Tapered)
NET FREE VENTILATION AREA
Noncombustible, Corrosion-Resistant Wire Mesh 98.75 sq. in.
Figures based on independent evaluation reports.
Vent Solutions
Questions?