To calculate an example of exhaust and intake use 25 feet of roof ridge vent.
How to install a roof ridge vent.
Multiply it by 18 square inches the net free air per foot of ridge.
This gives you 450 square inches of total exhaust.
To begin the ridge vent installation they measure down 3 inches from the top of the ridge and snap a line to cut the opening for the ridge vent.
Ridge vents cost 2 to 3 per linear foot.
Installing a roof vent costs between 300 and 650 on average including labor and materials.
Exact rates depend on the type size and number of units you choose to install.
This video shows clips of a reroofing job which included ridge vent installation.
Roof vents come in a variety of styles and range from 10 to 500 each.
Nail the section down by driving 2 inch roofing nails through the holes provided.
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.
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5 add sections to.
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.
Insert an end plug into a section of ridge venting and align the end with the end of the roof.