Peel back part of the uppermost backing on the roll, and nail the best corner with the underlayment to your decking. Start off pulling the roll throughout the decking using the backing, making sure the material is as flat and as straight as you can when you pull. Lower sheets https://localmetalroofers00997.educationalimpactblog.com/51089679/the-definitive-guide-to-metal-roofers