Steel Roof Decking Thickness

Manufacturers in the united states use gauge to express the thickness of metal roof panels.

Steel 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. 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. Kynar aluminum for metal roofing. Sheathing should be a minimum of 19 32 inch thick.

Metal roofing thickness recommendations that include paint. Thickness of a steel roof deck can be determined at a roof hatch where the edge of the deck may be available for measurement with a micrometer. 2 2 lb ft galvanized 2 1 lb ft painted type b roof deck 18. 22 gauge is the thickest while 29 gauge is the thinnest.

Regardless of thickness the plywood should be a type suitable for exterior use graded exterior or exposure 1. Roofs with very heavy loads may require 3 4 inch thickness. Minimum 024 aluminum standing seam. 8d ring shank nails should be used instead.

1 8 lb ft galvanized 1 7 lb ft painted type b roof deck 20. 014 018 exposed fastener corrugated aluminum roofing. 0 027 or 0 032 for seamless gutters and any other thickness for custom gutters. Type b roof deck 22.

Kynar galvalume steel for metal roofing and gutters. Minimum 032 steel shingles. Each gauge represents a nominal decimal range. 0 7 mm 0 8mm and 1 5 mm.

Never attach roof sheathing with staples. 26 gauge 24 gauge 20 gauge 18 gauge 16 gauge 14 gauge 1 8 and 1 4. Flexural strength can be assumed to be 33ksi unless a new single ply system is contemplated that requires a higher pull out strength. Exposed fastener corrugated steel roofing.

Minimum 0145 aluminum shingles.