How do you finish the ridge?
It’s best to use rectangular shingles (also called 3-tab or standard shingles) for the ridge. Cut the shingles into 3 separate tabs by cutting out narrow triangles. Bend the individual tabs over the ridge and nail them in place on both sides of the ridge. The next tab overlaps the previous one. Make sure the nails are covered by the next tab. Apply some Roof Glue Shingles to each nail.