Soffit is the most common and easy way to protect your roof frame and achieve air circulation to keep your building healthy.
Soffit standard size attic.
For example if you use 16 inch by 8 inch soffit vents each vent is 128 square inches.
Traditionally fascia is made with 1 x board material usually 1 x 6 1 x 8 or 1 x 10.
This may be standard solid wood lumber usually a softwood like pine or perhaps cedar or redwood to match the same type of house siding or it may be any type of engineered wood or manmade material such as masonite fiber cement pvc vinyl or wood composite.
Soffits 101 soffits are located underneath the overhangs of your home and cover your rafters protecting them from moisture and the elements.
Multiply the length of the attic times the width in feet to find the attic area then divide by 150 to find the total square feet of vent space needed.
By covering the underside of your overhangs soffits add aesthetic appeal and give your home a clean finished look.
If you re not a candidate for soffit for a given reason say your building does not have eaves i suggest you ask a builder to look at your attic and offer custom suggestions to improve your air circulation.
Pick out your soffit vent size and determine the square footage of the vent.
Calculate the total vent area needed.
Of total vent space needed.
Divide this by 144 to calculate how many square feet each vent is.
Ft divided by 150 equals 10 sq.
Soffits also keep pests like bats birds hornets bees wasps and squirrels out of your attic and rafters.
Length x width of attic in feet 150 total sq.
One square foot equals 144 square inches so the standard 16 inch by 8 inch soffit vent is 0 89 square feet.