GI Roofing Sheets
TNR Roofing, TNR Ironwill Steel

GI Roofing Sheets

Durable and corrosion-resistant, TNR’s GI Roofing Sheets are manufactured under strict in-house quality controls to ensure reliable protection. Designed with practicality in mind, they are ideal for temporary structures such as site sheds, storage shelters, and short-term coverings.

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GI (galvanised iron) roofing sheets are the classic corrugated roofing choice in Sri Lanka: light, easy to fix, and easy on the budget. TNR supplies GI sheets primarily for temporary and short-term structures such as site sheds, boundary hoardings, storage shelters, lean-to extensions, and farm coverings, where speed of installation and low cost matter more than decades of service life. Every sheet passes our in-house quality checks before it leaves the store, so you get consistent gauge, straight edges, and a uniform zinc coating across the full order.

Key Features

  • Standard Lengths – Available in 6 ft, 8 ft, 10 ft, and 12 ft. Stated in Height × Length × Width order, a sheet is: corrugation profile height × 6–12 ft length × standard corrugated cover width.
  • Gauge Options – Sheets are stocked in a range of thicknesses within our 0.16 mm to 0.47 mm roofing range; lighter gauges suit short-term covers, heavier gauges give extra stiffness and a longer working life.
  • Galvanised Coating – A zinc coating over the steel core slows rust and keeps the sheet serviceable through sun and monsoon rain.
  • Flexible Applications – Practical for temporary projects and quick installations; sheets can be cut, overlapped, and re-used across sites.
  • Islandwide Delivery – Fast and reliable supply across all 25 districts.
  • Trusted by Builders – Used in residential, commercial, and industrial projects nationwide.

Choosing GI for the Sri Lankan Climate

Sri Lanka's climate is hard on roofing: intense UV, heavy monsoon rainfall, and, near the coast, salt-laden air. Galvanised sheets handle inland conditions well for the temporary applications they are made for. In coastal areas such as Negombo, Wennappuwa, and Chilaw, salt air shortens the life of any galvanised product, so for permanent roofs near the sea we recommend stepping up to our Zinc Aluminium roofing sheets with AZ150 coating, which resist salt corrosion far longer. For a site shed that stands for a season or two, GI remains the sensible, economical choice anywhere on the island.


Buying and Delivery

GI roofing sheets are available directly from the TNR showroom in Wennappuwa and through our islandwide dealer network. Tell us the covered area and purlin spacing and our team will work out the sheet count, lengths, and overlaps for you, along with matching roofing accessories and fixings. Delivery typically takes 1–2 days within the Western Province and 3–5 days to other districts. Contact us for the current GI roofing sheet price in Sri Lanka; rates vary with gauge, length, and quantity, and dealer pricing is available for bulk orders.


Frequently Asked Questions

GI sheets are best for temporary and short-term structures: site sheds, storage shelters, boundary hoardings, farm covers, and quick extensions. For permanent homes and commercial buildings we recommend Zinc Aluminium sheets.

Typically 1–2 years in regular outdoor use, depending on gauge, environment, and maintenance. Inland sites get the longest life; coastal salt air shortens it.

Standard stock lengths are 6 ft, 8 ft, 10 ft, and 12 ft. Ask our sales team about availability of other lengths for your project.

Choose GI for temporary work where budget matters most. Choose Zinc Aluminium (AZ150) for permanent roofs, coastal locations, and anywhere long service life justifies the higher price. TNR stocks both, so you can compare on the spot.

Yes. Orders ship through TNR's islandwide network: usually 1–2 days within the Western Province and 3–5 days to other districts.
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