The min thickness of the roof slab should be 6 inches and maximum it can go up to 13 14 inches for span up to 7 m long.
Standard roof thickness in mm.
Standard roof sheathing which consists of 4 by 8 sheets of plywood or oriented strand board or osb is 1 2 inch thick and attaches directly to the roof rafters or the roof trusses.
24 l x 14 w 610 mm x 356mm.
Nominal 1 2 inch 13 mm to 3 4 inch 19 mm b.
Standard roofing slate thicknesses and sizes standard roofing slate thicknesses and sizes.
Four are epdm membranes and the fifth is a polyurathane liquid.
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.
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.
Nominal 3 16 inch 5 mm to 1 4 inch 7 mm 2.
Each gauge represents a nominal decimal range.
An exception to this standard however may occur if you intend to install slate concrete or tile shingles on your roof.
1 2mm standard 1 5mm commercial resitrix.
Nominal 1 4 inch 7 mm to 3 8 inch 10 mm 3.
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.