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.
Square footage of vent for roof house 1600 sq ft.
Of net free area of exhaust needed at or near the ridge.
As a general rule your roof needs 1 square foot of vent area for every 150 square feet of attic space.
For the 1 150 attic ventilation requirement simply double the amount of exhaust and intake calculated.
Example 20 wide by 50 long attic.
Part of it goes toward more expensive materials and part goes to the contractor doing the work.
Next multiply the square feet of attic space by 0 7 to get the minimum number of cubic feet of air per minute that the fan should be rated to move.
Ridge static attic vents 384 00 minimum sq.
Thus if your attic is 450 square feet you need roof vents equaling 3 square feet.
Attic x 0 7 700 cfm minimum fan rating.
There are also gable and roof fans which actively pull the hot air out of the attic.
20 x 50 1 000 sq.
Foam roofing costs 4 50 per square foot installed and an additional 1 63 sf to remove the original roof bringing it to 6 85 per square foot to account for roof pitch.
Whether you want a 1 600 square foot cottage or a large executive residence there s a home plan waiting for you.
Now the same roof on the west coast will be 3 76 per sq ft.
This is a difference of 35 25 or 0 98 per square foot.
Of net free area of intake needed at or near the soffit.
And this guideline you ll need a minimum of.
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.
Ventsure 4 foot strip heat moisture ridge vent.
Or 450 per square to replace an asphalt shingle roof.
We carry a variety of plans in the 1600 and 1700 square foot range in just about any style you can imagine.
Choose one of the following products to meet the recommended exhaust nfva of 528 square inches.
1600 1700 square foot home plans are ideal for homeowners looking for a house with plenty of breathing room but not too much upkeep.
That said on average most contractors will charge between 3 50 and 5 50 per square foot or 350 to 550 per square 100 sq ft to install or replace an asphalt shingle roof on a typical house.
Based on your 1100 sq.
For more than 100 years the garlinghouse company has led the industry in house plan design.
Thus at the mid point of the above price range you can expect to pay about 4 50 per sq.
The costs for foam roofing on a 1 100 1 500 2 400 and 3 000 square foot home are 7 535 10 275 16 440 and 20 550.