A ridge vent is an important part of a home s roofing system.
Install ridge vent existing roof.
A properly installed ridge vent increases energy efficiency and prolongs the life of your roof.
Position the aluminum ridge vent along the reference line.
The total area of the vents in an attic normally equals 1 150 of the floor area.
Cutting through the roof.
Time was about 1 hour and 15 minutes with 2 men.
Cost was less than 100.
Remove all the shingle caps from the roof ridge from one side of the roof to the other by prying them up with a pry.
Add any connectors and end caps that came with your ridge vent system to ensure the vent is watertight.
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.
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How to install a ridge vent in an old house calculating venting area.
You need to make a slot in the roof ridge to install the vents and if your roof has shingles.
Tools required circular saw dril.
Installing the vent in an existing roof entails tearing off the ridge shingles and cutting away the upper 2 or 3 inches of roof sheathing on each side of the ridge with a circular saw.
How to add a roof ridge vent to an existing roof 1.
Snap a chalk line on either side of the ridge that is about an inch from the peak and cut the shingles along both.
Position a section of metal ridge cap over the peak of the metal roof with the end of the ridge cap flush with one end of the roof peak.
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.
Remove the ridge cap from the roof peak.
Installing a ridge vent to ventilate the attic.
Mark a pencil line on the ridges of the installed metal roofing panels using the edge of the ridge cap as a guide.