Why Thickness Matters
Structural Rigidity: A thicker sheet (e.g., 0.60mm or 0.80mm) can handle higher wind loads and foot traffic. This is essential during maintenance when technicians need to walk on the roof.
Corrosion Buffer: While the Galvalume coating protects the steel, a thicker base metal provides a longer "life buffer." If the coating is ever scratched, a thicker sheet will take much longer to compromise structurally than a thin 0.45mm sheet.
Purlin Spacing: The thickness of the sheet dictates how far apart your purlins can be placed. Using a thicker sheet can sometimes allow for wider purlin spacing, potentially saving costs on the primary steel structure.
Common Gauges in the Market
0.45mm - 0.50mm: Standard for small warehouses and low-span sheds.
0.60mm - 0.80mm: Industrial standard for medium to large spans.
1.0mm and above: Specifically used for Deck Sheets or heavy-duty industrial environments.
R&R VERDICT: For most industrial sheds in Pune, we recommend a minimum thickness of 0.50mm (BMT) for the roof and 0.60mm for wall cladding if the area is prone to high winds. Never compromise on thickness to save 5% on costs; the structural risk and the potential for "oil canning" (visible waviness in the sheets) far outweigh the minor savings. Always verify the thickness using a digital micrometer at the site.
