Energy-Efficient Tin Roofing Sheets | Thermal Insulation

Energy-Efficient Tin Roofing Sheets | Thermal Insulation

Product Specifications

Key Features & Benefits

1. Superior Thermal Efficiency

   • A multi-layer design integrates galvanized sheet metal roofing with a polyurethane foam core (R-value: 5–6 per inch), reducing heat transfer by 70% compared to traditional metal sheets. This innovation minimizes energy costs by maintaining stable indoor temperatures year-round.
   • Reflective stone-coated surfaces block 98% of UV radiation, preventing heat absorption in summer while retaining warmth in winter.

2. Unmatched Durability

   • Tensile Strength: Engineered with Grade 304/316 stainless steel cores, our sheets withstand tensile forces up to 850 MPa, resisting wind uplift (180 mph) and snow loads (50 psf). Ideal for extreme climates like coastal regions or heavy snowfall areas.
   • Bending Resistance: Trapezoidal corrugations and reinforced edges provide bending strength of 320–480 MPa, preventing warping under prolonged stress.

3. Corrosion-Resistant Design

   • The galvanized sheet metal roofing base is hot-dip coated with zinc (275 g/m²), offering 4x longer rust protection than electro-galvanized alternatives. A secondary stone coating shields against saltwater, acid rain, and abrasion.

4. Lightweight & Eco-Friendly

   • At 4.0–6.5 kg/m², these sheets reduce roof load by 60% versus concrete tiles, simplifying retrofitting projects. Made with 80% recycled steel, they align with LEED certification standards.

Technical Insights

Identification & Traceability

• Laser Marking: Each sheet features a laser-etched code (e.g., CR-304-TI) compliant with ASTM E384, ensuring batch traceability and quality validation.
• XRF Testing: X-ray fluorescence analysis confirms alloy composition (18% Cr, 10% Ni for Grade 304) per ISO 9001 standards.

Weight Calculation Formula

$$\text{Weight (kg)}=\text{Thickness (mm)}\times \text{Width (m)}\times \text{Length (m)}\times 7.85(\text{steel density})$$

Example: A 0.6 mm × 1.2 m × 2.4 m sheet weighs $0.6\times 1.2\times 2.4\times 7.85=13.6\text{kg}$.

Why Stainless Steel May Corrode
Despite its resilience, stainless steel can corrode under specific conditions:

• Chloride Exposure: Coastal saltwater or de-icing agents penetrate the oxide layer, causing pitting corrosion.
• Mechanical Damage: Scratches during installation expose the iron substrate to oxidation.
• Low Oxygen Environments: Stagnant water inhibits chromium oxide layer regeneration.

Why Choose Crowther Roofing & Sheet Metal Inc?

1. 30-Year Warranty: Backed by ISO 14001 and TUV certifications, our fiberglass roofing sheets and galvanized sheet metal roofing excel in extreme climates.
2. Custom Solutions: Tailored perforations, thermal coatings (e.g., anti-ice), and profiles (arched/plain) for unique architectural needs.
3. Eco-Conscious Manufacturing: 100% recyclable materials and energy-efficient production reduce carbon footprint by 40%.
4. Global Compliance: Meets ASTM, CE, and SGS standards for fire resistance (Class A1) and load-bearing capacity.