Steel Roof Decking Thickness

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

Steel roof decking thickness. Type b roof deck 22. Flexural strength can be assumed to be 33ksi unless a new single ply system is contemplated that requires a higher pull out strength. 0 027 or 0 032 for seamless gutters and any other thickness for custom gutters. 22 gauge is the thickest while 29 gauge is the thinnest.

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. Each gauge represents a nominal decimal range. Roofs with very heavy loads may require 3 4 inch thickness. 8d ring shank nails should be used instead.

Never attach roof sheathing with staples. Minimum 024 steel standing seam. 2 2 lb ft galvanized 2 1 lb ft painted type b roof deck 18. Minimum 024 aluminum standing seam.

1 8 lb ft galvanized 1 7 lb ft painted type b roof deck 20. 0 7 mm 0 8mm and 1 5 mm. Regardless of thickness the plywood should be a type suitable for exterior use graded exterior or exposure 1. Exposed fastener corrugated steel roofing.

Metal roofing thickness recommendations that include paint. Minimum 0145 aluminum shingles. 26 gauge 24 gauge 20 gauge 18 gauge 16 gauge 14 gauge 1 8 and 1 4. Kynar aluminum for metal roofing.

Sheathing should be a minimum of 19 32 inch thick. Minimum 032 steel shingles. Manufacturers in the united states use gauge to express the thickness of metal roof panels. Kynar galvalume steel for metal roofing and gutters.

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.