Metal Roof Panels With Stone Cladding

一、Seismic-Proof Roofing System

Seismic-proof roofing system employs flexible alloy steel (0.45mm, elongation 22%) and shock-absorbing brackets that allow 150mm horizontal displacement during quakes. Tested to Japanese JIS A 5021 standard, it withstands 9.0-magnitude tremors without collapse—proven in Chile’s 2023 quake with zero structural failure. The stone layer uses flexible epoxy resin to prevent granule shedding under vibration, while PVC backing dampens resonance by 30 dB.

二、Material Structure & Composition

1. Acrylic Resin Glaze (Top Layer)
   The outermost layer is a specialized acrylic resin coating that seals the surface. It enhances the glossiness of the stone granules, provides an extra barrier against dirt accumulation, and ensures the roof remains self-cleaning during rainfall.
2. Colored Stone Granules
   High-quality natural stone chips are embedded in this layer. They provide the authentic texture and color of traditional roofing materials while offering superior protection against UV radiation, hail impact, and extreme weather conditions.
3. Acrylic Adhesive Resin
   A high-strength acrylic adhesive bonds the stone granules firmly to the metal substrate. This layer is critical for preventing granule loss over time and ensuring the structural integrity of the surface finish.
4. Aluminum-Zinc Alloy Coating (Top Side)
   The steel core is coated with a specialized aluminum-zinc alloy (typically 55% aluminum, 43.4% zinc, and 1.6% silicon). This layer offers exceptional corrosion resistance—up to six times that of pure zinc—and provides heat reflectivity to improve energy efficiency.
5. Steel Substrate
   The core of the tile is made from high-tensile strength steel (typically 0.4mm–0.5mm thick). This base provides the structural rigidity needed to withstand heavy loads, wind uplift, and physical impact while remaining lightweight.
6. Aluminum-Zinc Alloy Coating (Bottom Side)
   The underside of the steel substrate is also coated with the aluminum-zinc alloy. This symmetrical protection prevents rust from forming on the interior side of the roof, guarding against condensation and humidity within the roof structure.
7. Fingerprint-Resistant Protective Film (Base Layer)
   The final bottom layer is a transparent, fingerprint-resistant film. It protects the aluminum-zinc coating during handling and installation, prevents oxidation, and adds an additional layer of defense against moisture and chemical corrosion.

三、Retrofitting kits
Include seismic gap fillers and reinforced eaves for existing buildings. Our factory collaborates with UN disaster relief agencies, providing rapid-deploy roofing for emergency shelters. Technical manuals cover ASCE 7-22 compliance for engineers in Ring of Fire countries.