Rafter Spacing For Metal Roof Vs Shingles

Now there are metal shingles and panels that imitate materials like slate tile wood shake and even asphalt.

Rafter spacing for metal roof vs shingles.

Tin roofing also known as metal roofing is considered more durable than composition or wood shingles. Wider panels allow for greater spacing between rafters. The typical spacing standards for residential and commercial buildings are about 1 to 2 foot. For heavier material such as gage steel the metal roof purlins spacing length could go up to 4 feet.

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. 2x10 rafters on 4 centers with joist hangers attached to a 2x10 header sitting on 10 pole spacing. 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. 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.

Asphalt shingle roofing is a dominant material for residences. Installing wood stripping under a tin 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. The roofing is manufactured in panels that. What s the difference between an asphalt shingle and metal roof. Spacing your 2 4 shed rafters at 24 on center limits the width of your roof.

Rafter spacing is based on the width of the metal roofing panels. A metal roof must also allow for some overlap on each side of the panels which will reduce the effective width of the panel. The support system for the roof is comprised of ridgepole and rafters or purlins. 2 4 rafters can span up to 7.

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. For light load roofs 24 o c. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements.