There are a number of key steps you need to take to avoid mucking this part up.
How to install roof ridge vent cap.
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In summary to install the ridge cap shingles you simply separate them where they are perforated bend them over the peak and nail them down.
How to install ridge cap vent for a metal roof for a vented ridge cap there needs to be a 2 inch wide opening at the ridge for ventilation.
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 is an area of the roof which requires extra care and skill.
Attach the other side of the vent to the opposite side of the ridge to fully secure the vent.
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Begin by removing all cap shingles along the entire.
Install profilevent to 1 up slope from the edge of the ridge cap.
With new laminated hip and ridge cap shingles finishing a roof installation with a ridge cap is a much simpler process than with the old three tab shingles.
Place the shingle over ridge vent along the reference line and nail the ridge vent to the decking along that side as directed by the manufacturer.
Install asphalt shingle caps over the vent using the nails recommended by the manufacturer.
For a ridge vent to work properly it must have adequate intake of fresh cool.
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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.