Metal Roof Decking Thickness

It s important for you as a homeowner to know about the gauge thickness of a metal roof so you can select the best one for yourself.

Metal roof decking thickness.

For this you can either go for a half inch or 5 8 inch thick sheet. Once the spacing hits 24 inches a 5 8 inch thick sheet is more ideal. 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. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.

22 gauge is the thickest while 29 gauge is the thinnest. 0 7 mm 0 8mm and 1 5 mm. Following are the details you ll need about any of our products. Manufacturers in the united states use gauge to express the thickness of metal roof panels.

Hi todd i have a pole barn design structure that had been turned into a livable dwelling with cathedral ceilings using rigid foam between the metal roof and the ceiling sheetrock i am redoing this and putting a decking down with tyvek protec 200 and then reattaching the metal roof and adding circular pest resistant soffit vents at the end rafters of the roof between purlins for ventilation. Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick. Sheathing should be a minimum of 19 32 inch thick. From the typical 1 to 3 roof and composite floor deck to concrete form deck to long spanning deep deck profiles asc steel deck s extensive product offer meets the needs of the most complex conditions and demands for structural performance and design.

0 027 or 0 032 for seamless gutters and any other thickness for custom gutters. Each gauge represents a nominal decimal range. Most roofs are spaced at least 20 inches apart. 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.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Kynar aluminum for metal roofing. Kynar galvalume steel for metal roofing and gutters. Never attach roof sheathing with staples.

The problem with metal roofing gauge is that there is a wide range of tolerances. In this case you can t use a 3 8 inch thick sheet. 26 gauge 24 gauge 20 gauge 18 gauge 16 gauge 14 gauge 1 8 and 1 4. Steel decking is used in many applications but is particularly well suited to roofing and flooring.

The typical thickness range for sheathing is 3 8 to 3 4 inch.