There are a number of key steps you need to take to avoid mucking this part up.
How to finish a roof ridge cap.
Alternate the direction of the joint.
Nails and nails only.
Foundational aspects of ridge cap installation are covered in this how to install ridge cap video.
Roof cap vents cap vents are commonly placed over the peak to provide passive ventilation for the attic.
Using the tabs we started at one end working toward the other so the nails were blind and then on the last tab you have to nail it and use some roof cement on the nail neads.
Nails are placed along the protruding flanges roughly every 6 inches.
This is an area of the roof which requires extra care and skill.
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.
Nail on both sides of the ridge behind the area that will be covered with the next piece.
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.
Continue up the roof from both side and then cut 3 caps from each tab of the shingle.
Start on the end of the ridge opposite to the prevailing winds.
Use roofing cement to attach the leading edge of this ridge cap piece to the shingles below.
Some cap vents require.
Gluing anything on a roof isn t in our vocabulary.