Roofs are built not only to hold up well against the elements but also under various temporary and permanent loads. These loads are pushing both upward and downward. In today’s article, Valley Vista Construction, Inc, the top roofing contractor in our local area, discuss the different types of roofing loads.
When wind hits the exterior wall of your house, its energy disperses upward and downward along the exterior wall. This upward movement exerts an uplift load on the roof, which the roof must resist. The usual uplift load limit assumes a maximum wind speed of about 90 miles per hour and an uplift load of about 20 pounds per square foot.
The dead load on a roof refers to the weight of the roof structure plus the weight of any permanently attached structures and materials. A properly designed and constructed roof must be able to support itself at all times. The dead load of an ordinary asphalt shingle roof with wood frames is about 15 psf. The dead load increases with the use of heavier roofing material. During your roof replacement, we will take into account your roof’s structure and recommend roof replacement options that can be safely supported.
The live load refers to the weight of any temporary objects on the roof, such as snow or the people working on the roof and their equipment. A roof must be able to support the sum of anticipated live load and its dead load. A typical roof is expected to support a live load of 20 psf. This is in addition to the dead load that the roof must support.
If you need a roofing and gutter contractor you can rely on, then give Valley Vista Construction, Inc a call. We are a local, family-owned and operated company that has over a decade of experience. We serve many areas including Maryville, 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.