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How to install a roof ridge vent.
Since exhaust and intake must be equal 450 square inches of total intake is required as well.
Exact rates depend on the type size and number of units you choose to install.
Fasten the vent to the roof decking and rafters or trusses by nailing through the flange on both sides of the vent using the nails and nail spacing recommended by the manufacturer.
Using a circular saw with a carbide tip blade one of the roofers plunges the saw into the ridge at the ends and then follows the chalk line.
This video shows clips of a reroofing job which included ridge vent installation.
Position the aluminum ridge vent along the reference line.
Add any connectors and end caps that came with your ridge vent system to ensure the vent is watertight.
Multiply it by 18 square inches the net free air per foot of ridge.
Ridge vents cost 2 to 3 per linear foot.
Installing a roof vent costs between 300 and 650 on average including labor and materials.
Insert an end plug into a section of ridge venting and align the end with the end of the roof.
Roof vents come in a variety of styles and range from 10 to 500 each.
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To calculate an example of exhaust and intake use 25 feet of roof ridge vent.