Price to Shingle a Roofing System Calculator
http://wiki.soippo.edu.ua/index.php?title=%D0%9A%D0%BE%D1%80%D0%B8%D1%81%D1%82%D1%83%D0%B2%D0%B0%D1%87:Hebethhqya
For roofings shingled with laminated roof shingles, multi-cutout roof shingles, as well as other formed shingles, you'll need to buy hip-and-ridge shingles that are manufactured as friends to the details roof shingles