For most asphalt shingle ridge caps there are two.
How torepair shingles on roof vent.
Cut and bend a shingle to conform to the shape of the peak of the roof.
Overlap the shingles to cover the nails on the side edges and use roofing cement to cover the nail heads on the shingle at the end of the roof.
This is an area of the roof which requires extra care and skill.
Pull the old flashing up over the vent pipe and scrape any old caulk and debris off the roof.
Usually you can also work those loose without removing shingles.
Remove the shingle caps.
There will be nails across the top of the vent too.
Cut the ventilation opening.
Patch the nail or screw holes by slipping a piece of roof flashing underneath the shingle.
Hammer a roofing nail on each side of the shingle five inches from the bottom edges and one inch from the side edge.
Start by removing the nails holding the ridge cap shingles in place.
Slip a flat bar under the edge of the vent flashing and pop the nails up photo 1.
Loosen and remove the damaged shingles.
The cap shingles often are installed on top of a continuous ridge vent.
Install new field shingles.
Small nail holes left behind from old vents satellite dish brackets or anything previously attached to the roof can allow water to enter and cause damage for years before leaking is noticed.
Loosen the adhesive underneath the tabs of the damaged shingle then pull them free and discard.
There are a number of key steps you need to take to avoid mucking this part up.
Slide the new flashing over the vent pipe and under the shingles above the pipe.
Just remove them and replace them with new shingles of a similar style to the rest of the shingles on the roof.
If the shingles are severely damaged don t try to salvage them.
Install the ridge vent shingle over style install the ridge vent aluminum.