Rafter Spacing For Metal Roof Vs Shingles

Asphalt shingle roofing is a dominant material for residences.

Rafter spacing for metal roof vs shingles.

Spacing your 2 4 shed rafters at 24 on center limits the width of your roof. Because this roof design doesn t have the added weight of plywood roof sheathing and metal roofs are generally lighter than asphalt shingle roofs the rafters have much less weight to bear than they would in a conventional design. Now there are metal shingles and panels that imitate materials like slate tile wood shake and even asphalt. The typical spacing standards for residential and commercial buildings are about 1 to 2 foot.

What s the difference between an asphalt shingle and metal roof. For heavy loads 2x4s can span up to 5. However metal roofing is surging in popularity as more aesthetic options become available. Visit the roof framing page for more information on cutting roof rafters and visit the roof pitch calculator for determining rafter lengths based on rise and run.

Pole buildings with metal roofs are typically built with metal roofs resting directly on rafters and purlins horizontal members that run between rafters and tie them together. Wider panels allow for greater spacing between rafters. 2x10 rafters on 4 centers with joist hangers attached to a 2x10 header sitting on 10 pole spacing. Maximum rafter spans for a patio roof in areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.

The additional lento s have less bounce in them than the existing pole barn roof did that was trusses on 10 centers. Purlins were 2x4 laid flat on 2 centers spanning the 4 between rafters. 2 4 rafters can span up to 7. A metal roof must also allow for some overlap on each side of the panels which will reduce the effective width of the panel.

Rafter spacing is based on the width of the metal roofing panels. Tin roofing also known as metal roofing is considered more durable than composition or wood shingles. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements. The support system for the roof is comprised of ridgepole and rafters or purlins.

Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch. The roofing is manufactured in panels that. Metal roofs generally can run from 120 to 900 per 100 square feet one 10 foot by 10 foot area or a square of material while asphalt shingles will be between 100 and 200 per 100.