A Field-Ready Look at Stone Coated Metal Roof Tile-Nosen Tile

If you follow roofing the way some people follow football, you’ve noticed what I’ve noticed: stone-coated metal is quietly eating into both clay and asphalt share. Contractors like the speed; owners like the look and the 30–50 year service life. And this model—let me say it plainly—has been the one I keep hearing about on coastal and high-wind jobs: Stone Coated Metal Roof Tile-Nosen Tile.

Why it’s trending (and where it fits)

Across residential reroofs, hilltop villas, resorts, and light commercial buildings, specifiers are swapping heavyweight tiles for stone-coated metal to reduce structural load, simplify logistics, and keep the “classic tile” curb appeal. In typhoon or hail zones, I’ve seen owners push for UL 2218 Class 4 impact as table stakes. This tile checks that box, plus wind uplift performance that’s—frankly—better than many expect from a 2.7 kg panel.

Core build and process flow

• Substrate: Al–Zn (Galvalume) steel, ≈0.4–1.0 mm (common pick ≈0.45–0.5 mm for roofing).
• Basecoat: acrylic resin primer for chip adhesion.
• Stone layer: natural basalt chips, color-stable, kiln-dried, embedded and sealed.
• Top overglaze: UV-resistant acrylic; oven cured for adhesion and color hold.
• Forming: high-speed press for 3D tile profile; edges designed for interlock and capillary breaks.
• QC & tests: salt spray, humidity, impact, fire spread, and cyclic thermal exposure.

At-a-glance specifications

Service life: commonly 30–50 years with periodic inspection; warranties often 25–50 years (finish + substrate).

Testing, certifications, and sample data

• Impact: UL 2218 Class 4 (2-inch steel ball, no fracture) [1].
• Fire: ASTM E108/UL 790 Class A roof assembly when installed per system spec [2].
• Corrosion: ISO 9227 / ASTM B117 salt spray ≥1000 h, no red rust on field; cut-edge creep ≤2 mm [3][4].
• Humidity: ASTM D2247 100% RH, 38°C, 1000 h—adhesion intact (field reports echo this).
• Noise: field anecdotes suggest 6–8 dB rain-noise reduction vs. bare metal due to stone layer.

Where it’s being used (quick cases)

• Cebu coastal resort, 2,400 m²: salt-mist exposure; after 18 months, color delta modest and fixings stable.
• Nairobi school reroof, 1,800 m²: rainy-season testing showed fewer drips at laps; crews liked the lighter lift.

Customer sentiment? Many say it “looks like tile, installs like metal.” I get that.

Vendor comparison (shortlist view)

Customization and program notes

Profiles, colors, and thickness can be tuned (around 0.45–0.6 mm is a sweet spot for balance). Matching accessories—ridge, hip, valley, fasteners—matter more than brochures admit; ask for full system specs. Origin: No.B2305, Times Ark Building, Guangan Street, Shijiazhuang, China.

Installation pointers (from the field)

• Use approved screws with sealing washers; keep lap into prevailing wind.
• Cut with shears, not abrasive wheels (protect that Al–Zn edge).
• Ventilation: don’t skip it—condensation control extends real-world life.

Standards, data, and warranties can vary by region, assembly, and local code. Always confirm the specific test reports and installation instructions for your project.

Authoritative citations

1. UL 2218: Impact Resistance of Prepared Roof Covering Materials.
2. ASTM E108 / UL 790: Fire Tests of Roof Coverings.
3. ISO 9227: Corrosion tests in artificial atmospheres—Salt spray tests.
4. ASTM B117: Standard Practice for Operating Salt Spray (Fog) Apparatus.