Collar tie: A collar tie is actually a board that results in a horizontal line between two rafters. It can be structural but additionally may possibly body a ceiling. The roof decking will be the layer of plywood or O.S.B. nailed on the trusses or rafters. Roof decking is usually https://thriveable.net/top-5-ways-to-find-affordable-roofing-services-in-oswego-illinois-expert-guide-for-homeowners/