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Stone-Coated Steel Roofing Tile
1.Product Overview
Stone-Coated Steel Roof Tiles offer superior durability, weather resistance, and aesthetic appeal by fusing a galvanized steel core with natural stone granules. Key advantages include extreme longevity (50+ years), lightweight design reducing structural load, excellent fire resistance (Class A), and minimal maintenance. The primary substrate difference lies in the steel's corrosion protection: Galvanized (G90) provides good protection, while Aluminum-Zinc Alloy (AZ150/GL) offers significantly enhanced rust resistance and heat reflectivity, making it the premium choice for harsh coastal or industrial environments.
2.Key Features
(1)Exceptional Durability & Longevity: Combines the structural strength of steel with a protective layer of natural stone granules, offering superior resistance to impact, cracking, and extreme weather, with a service life exceeding 50 years.
(2)Lightweight & Structural Efficiency: Significantly lighter than traditional concrete, clay, or slate tiles, reducing the load on the roof structure and allowing for easier, faster installation.
(3)Superior Weather & Fire Resistance: Provides excellent protection against wind, hail, and UV radiation, and achieves a Class A fire rating (the highest), enhancing home safety.
(4)Low Maintenance & Energy Efficient: Requires minimal upkeep and does not fade, rot, or attract moss. The reflective metal substrate can improve thermal insulation, potentially lowering cooling costs.
(5)Aesthetic Versatility: Available in a wide range of colors and profiles that authentically mimic the appearance of traditional roofing materials like clay tile, wood shake, or natural slate.
3.Technical Parameters
| Parameter | Specification / Typical Range | Standard / Note |
|---|---|---|
| Substrate Material | Galvanized Steel (G90), Aluminum-Zinc Alloy Coated Steel (AZ150/GL) | ASTM A653 / EN 10346 |
| Substrate Thickness | 0.40 mm ~ 0.55 mm | Base metal thickness (BMT). |
| Stone Granule Type | Natural Slate, Basalt, Ceramic-coated Granules | Granule size typically 0.8mm - 2.0mm. |
| Coating System | Primer + Acrylic Resin Adhesive + Stone Granules + Acrylic Top Coat | Multi-layer process for adhesion & color lock. |
| Tile Profile/Design | Shake, Slate, Shingle, Roman, Scallop | Mimics traditional materials. |
| Tile Width | 300 mm ~ 400 mm | Varies by profile. |
| Tile Length | 1000 mm ~ 1500 mm | Varies by profile. |
| Weight per Square Meter | 8 kg/m² ~ 12 kg/m² | Much lighter than concrete/clay tiles. |
| Fire Rating | Class A (Highest) | ASTM E108 / UL 790 |
| Wind Resistance | Up to 120 mph (193 km/h) or higher | ASTM D3161 / UL 1897 |
| Weather Resistance | UV, Salt Spray, Thermal Cycling | Passes relevant ASTM/EN aging tests. |
| Primary Application | Residential, Commercial, and Architectural roofing | For pitched roofs, suitable for various climates. |
4.Application Scenarios
(1)Residential Roofing Replacement & New Construction: An ideal, long-lasting upgrade for homes, particularly in areas prone to severe weather (hurricanes, hail, wildfires), or for homeowners seeking the look of traditional materials without the weight and maintenance.
(2)Commercial & Architectural Projects: Used on commercial buildings, resorts, and public structures where a specific aesthetic (Mediterranean, Tudor, Colonial) is desired, coupled with the need for durability, fire safety, and reduced life-cycle costs.
(3)Retrofit & Renovation Over Existing Roofs: Due to its lightweight nature, it is often suitable for installation directly over an existing roof deck (subject to local codes), saving on tear-off costs and time during renovation projects.
5.FAQs
Q1:Is it noisy during rain or hail?
A1: No. The combination of the steel substrate, adhesive, dense stone layer, and underlayment provides sound-dampening properties comparable to or better than other common roofing materials. It is not noticeably louder.
Q2: What is the difference between Galvanized (G90) and Aluminum-Zinc (AZ150) substrates?
A2:Galvanized (G90) steel offers good corrosion protection. Aluminum-Zinc (AZ150/GL) alloy coating provides superior, long-term rust resistance and better heat reflectivity, making it the recommended choice for coastal or harsh industrial environments.
Q3:Can it be installed in very cold climates?
A3:Yes. Properly designed systems are rated for extreme temperature cycles. However, installation guidelines (regarding temperature limits for sealing adhesives) must be strictly followed to ensure performance.
Q4:How is the color finish maintained over time?
A4:The stone granules are ceramic-coated for color stability and embedded in a durable acrylic resin. This system is highly UV-resistant, minimizing fading. The warranty typically covers significant granule loss or color change.
If you want to know more, please feel free to contact us.
