Residential Metal Roofing Thickness

The gauge of a metal roof refers to its thickness and the higher the gauge the thinner the metal.

Residential metal roofing thickness. When it comes to metal roofing gauges thicker typically means that the cost will be higher. Some steel shingles and tiles have a baked on granular coating that adds to their thickness and the mra notes that those products are usually made from 26 gauge steel. Each gauge represents a nominal decimal range. Most metal roof and wall panels on the market are between 22 29 gauge with 20 gauge being the thickest and 29 gauge being the thinnest panels sold.

The problem with metal roofing gauge is that there is a wide range of tolerances. Some people may believe that thicker is always better but whether it needs that added strength actually depends on the type of building construction as well as its location. The metal roofing alliance mra recommends a galvanizing thickness level of at least g 90 for residential applications and an az 50 or az 55 designation for galvalume coatings. G 90 the most common zinc thickness used in residential metal roofing systems means that 0 90 ounces of zinc are coated per square foot of steel surface.

Kynar aluminum for metal roofing. In areas by the. 26 gauge 24 gauge 20 gauge 18 gauge 16 gauge 14 gauge 1 8 and 1 4. 22 24 26 29.

For example standard 29 gauge steel roofing made in long panels is about 0 36 millimeters thick and the 26 gauge version is slightly thicker at 0 48 millimeters. Metal roofing gauge sizes. 0 7 mm 0 8mm and 1 5 mm. While 26 gauge and 24 gauge are generally the standard for most commercial and residential installations some choose to work with 29 gauge because it is more affordable.

It s the thickest type offering more protection for certain types of buildings. For example one company might sell a product as being 24 gauge but in reality the thickness of the metal could vary from 0 018 to 0 0335 based upon exactly how that company looks at things and how big of a tolerance they allow for. Kynar galvalume steel for metal roofing and gutters. Homeowners choose 22 for metal roofing because.

0 027 or 0 032 for seamless gutters and any other thickness for custom gutters. Manufacturers express the thickness of metal panels as their gauge with 22 gauge being the thickest and 29 gauge the thinnest of traditionally sold metal roof and wall panels.