Kumar IronRoofing sheet weight chart
Weight of GI, GC and colour coated sheets by thickness, per square metre and per running foot.
Formula
Weight (kg per m²) = thickness (mm) × 7.85. Per running ft = kg per m² × sheet width (m) × 0.3048. Add the zinc or zinc-aluminium coating mass on top, for example 0.12 kg per m² for Z120.
| Thickness | kg per m² | kg per running ft, 3 ft (914 mm) | kg per running ft, 3.5 ft (1067 mm) |
|---|---|---|---|
| 0.30 mm | 2.35 | 0.66 | 0.77 |
| 0.35 mm | 2.75 | 0.77 | 0.89 |
| 0.40 mm | 3.14 | 0.87 | 1.02 |
| 0.45 mm | 3.53 | 0.98 | 1.15 |
| 0.50 mm | 3.93 | 1.09 | 1.28 |
| 0.55 mm | 4.32 | 1.20 | 1.40 |
| 0.60 mm | 4.71 | 1.31 | 1.53 |
| 0.63 mm | 4.95 | 1.38 | 1.61 |
| 0.70 mm | 5.50 | 1.53 | 1.79 |
| 0.80 mm | 6.28 | 1.75 | 2.04 |
Base steel weight without coating or paint. Widths are flat sheet widths before profiling. Actual weight varies with coating grade and thickness tolerance, so billing is by actual weighed weight.
Need roofing sheets?
We stock GI, GC and colour coated sheets in common thicknesses and lengths. See our roofing sheets.
FAQ
- How is roofing sheet weight calculated?
- Weight (kg per m²) = thickness (mm) × 7.85, using steel density of 7850 kg/m³. A 0.50 mm sheet weighs about 3.93 kg per m² before coating.
- How much does the zinc coating add?
- The coating mass is printed as Z or AZ grade in g/m² on both sides together. Z120 adds 0.12 kg per m² and Z275 adds 0.275 kg per m².
- Is thickness measured with or without coating?
- Brands quote either base metal thickness (BMT) or total coated thickness (TCT). Ask which one is quoted when comparing rates.
Tell us the sheet type, thickness and length and we will send today's rate.