TNR Roofing
Zinc Aluminium Roofing Sheets
TNR Zinc Aluminium Roofing Sheets combine strength, corrosion resistance, and aesthetic appeal. Manufactured with advanced technology and strict in-house quality controls, these sheets are engineered to withstand Sri Lanka’s heavy monsoon rains, coastal salt air, and intense tropical heat.
Our roofing range is available in multiple profiles, thicknesses, and colors, with matching accessories to complete your structure. With sourcing options from Korea, Vietnam, and China, TNR ensures you get the right balance of performance, design, and value.
Key Features
- Heat Reflection – Zn/Al alloy coating keeps interiors cooler in hot climates.
- Coastal Strength – AZ150 coating provides maximum protection against rust and salt-air corrosion.
- Modern Designs – Wide range of colors: Reddish Brown, Autumn Red, Caulfield Green, Lazrite Blue, Amethyst Blue, Zincalume.
- Custom Sizes – Available in gauges 0.30 mm to 0.47 mm, cut to required lengths.
- Versatile Use – Suitable for both permanent builds and temporary projects (site sheds, event covers, farm shelters).
- Islandwide Delivery – Supplied quickly and securely to any doorstep across Sri Lanka.
- International Quality – Sheets available from Korea, Vietnam, and China in addition to TNR’s own supply lines.
Technical Specifications
| Specification | Details |
|---|---|
| Standards | ASTM A792 |
| Material | 55% Aluminium, 43.4% Zinc, 1.6% Silicon |
| Tensile Strength | G550 / G350 |
| Coating | AZ150 (150 g/m² of Zinc Aluminium alloy coating) |
| Paint System | 25 Micron Regular Polyester over primer & chemical treatment |
| Thickness | 0.30 mm – 0.47 mm |
| Effective Cover Width | 732 – 970 mm depending on profile |
| Applications | Roofing, Cladding, Curved Sheets, Wall Systems |
Profiles & Options
-
TNR Hi-Ten Roof
Traditional roofing style, 0.35–0.47 mm, Grade 550 tensile -
TNR Glamour Roof
Tile-look roofing for residential/heritage designs, 0.47 mm, Grade 350 tensile -
Wall Cladding Panels
Sleek protective panels for modern buildings -
Curved Sheets
Double Curve, Bullnose, Crank Ridge, Convex for architectural flexibility
Frequently Asked Questions
For coastal areas, Zinc Aluminium (Zn/Al) sheets with AZ150 coating are recommended due to high corrosion resistance. For inland projects, GI sheets are durable and cost-effective. TNR supplies both options, including sheets made in Korea, Vietnam, and China.
They are used for roofs, cladding, site sheds, temporary shelters, farm storage, warehouses, and even pergolas or balconies. TNR sheets are cut to length and available in multiple profiles for residential, commercial, and industrial applications.
We offer 0.16 mm to 0.47 mm sheets. Thinner sheets suit temporary or light use, while 0.42 mm+ is ideal for permanent housing, factories, and commercial buildings.
GI sheets are usually the most affordable option. If long-term durability in harsh environments is a priority, Zn/Al sheets provide better value over time.
TNR Zn/Al sheets come in Reddish Brown, Autumn Red, Caulfield Green, Lazrite Blue, Amethyst Blue, and Zincalume finishes. Custom colors can be supplied on request.
Yes. Zn/Al sheets reflect more sunlight and help reduce indoor heat. We also offer options with insulation and color coatings that improve heat performance.
Yes. Both GI and Zn/Al sheets are suitable for short-term site huts, event shelters, and farm storage sheds, as they are easy to install and dismantle.
Our sheets come pre-coated with durable finishes. Additional painting is possible but not required. For the longest lifespan, use roofing-grade paints if repainting.
We supply a full set of gutters, ridge caps, flashings, downpipes, and brackets. These prevent leaks, ensure smooth water drainage, and give a professional finish.
GI sheets are galvanized for protection, while Zn/Al sheets with AZ150 coating provide superior corrosion resistance, especially in coastal and high-rainfall areas.
- GI Sheets: 1–2 years depending on environment and maintenance.
- Zn/Al Sheets: the best quality can last 5–10 years in normal conditions, with longer durability in inland zones.
Yes. TNR has an islandwide distribution network. Delivery takes 1–2 days in Western Province and 3–5 days to other districts.
We supply sheets cut to order. Standard bundles vary depending on gauge, length, and transport needs. Our sales team will advise based on your order.
AZ150 means the sheet has 150 grams of Zinc Aluminium coating per square meter, which ensures excellent protection against rust and long life.
Yes. TNR roofing sheets are strong enough to support solar panel mounting structures when installed correctly.
Trust Statement
With AZ150-coated Zn/Al alloy, multiple profiles, and proven durability, TNR Roofing Sheets offer the perfect blend of strength and style. Combined with availability from Korea, Vietnam, and China, and backed by TNR’s nationwide distribution, you get roofing that is durable, stylish, and built to last.
Let's Talk
Have a question or need a quote? Reach out and our team will get back to you promptly.