A well-designed roof is strong enough and thick enough to support the shingles that will be installed on it. The thickness of the roof mostly depends on the size of its rafters but other elements can also affect it. In today’s article, Valley Vista Construction, Inc, the top roofing contractor in our local area, discusses the factors that determine roof thickness.
Rafters are the structural beams that bear the weight of the roof sheathing and asphalt shingles. The size of the rafters vary depending on the house and their thickness depends on the roof span and the roof pitch.
Typical asphalt shingles add very little thickness to the roof. For example, a three-tab shingle is usually 3/16 of an inch thick. However, remember that shingles overlap once they are installed. This doubles the thickness.
The trusses of a roof are not as thick as rafters because they are engineered from multiple wood members. Trusses can support a heavier load than rafters of a similar size. The thickness and dimensions of trusses are determined by the engineer’s specifications for the roof. As the top roof repair service in our area, we know how to work on roofs that are installed on either rafters or trusses.
Typical roof sheathing consists of 4-by-8 sheets of oriented strand board or plywood. It is half an inch thick and is attached directly to the roof trusses or roof rafters. Homes that have slate or tile roofing need to have thicker roof sheathing to support the additional weight.
Valley Vista Construction, Inc is the leading roofing and gutter contractor in our local area because of our many years of experience, excellent workmanship and great customer service. We are one of the few roofing contractors who has earned the GAF Master Elite® certification. We serve many areas including Knoxville, TN. Call us at (865) 963-7003 to learn more about our services and products or to request a consultation. You can also contact us here.