Aluminum Single Skin Façade Panel

A: An aluminum solid panel (also known as aluminum single panel, aluminum curtain wall panel, or 铝单板) is a custom-fabricated exterior wall cladding panel made from high-grade aluminum alloy sheet (typically 1100-H24, 3003-H24, or 5052-H32), formed into precise shapes through CNC cutting, bending, welding, and reinforcing. Unlike aluminum composite panels (ACP) with a polyethylene core, solid aluminum panels are a single homogeneous metal sheet throughout the thickness, providing superior fire resistance, structural integrity, and longevity. They are the material of choice for modern architectural façades, having been specified for landmark buildings worldwide.

A: Common specifications:
· Alloy grades: 1100-H24 (general), 3003-H24 (standard architectural), 5052-H32 (high-strength/marine)
· Panel thickness: 1.5mm, 2.0mm, 2.5mm, 3.0mm (2.5mm most common for façades)
· Maximum panel size: 1500×4000mm (standard coil width); larger panels require welding - up to 2000×6000mm
· Reinforcing ribs: aluminum stiffeners (U-channel or hat-section) bonded to the back with high-strength structural adhesive (3M VHB tape or Sika structural adhesive), spaced at 400–600mm centers
· Surface finish: PVDF coating (standard for exterior), FEVE fluorocarbon, powder coating (interior/sheltered), anodizing
· Standard shapes: flat panels, curved panels (single-axis), hyperbolic panels (double-curved), perforated panels, louver panels
· Edge returns: 20–25mm folded edges all around for stiffness and weather sealing
· Installation system: aluminum extrusion grid (post-and-rail) or steel subframe with stainless steel screws/rivets
· Weight: approximately 6.75 kg/m² at 2.5mm thickness (without framing)

A: Aluminum solid panels are made-to-order based on project-specific shop drawings. The typical MOQ is 200–500 square meters. Smaller quantities (50–200 m²) may be accommodated with a surcharge. For large-scale commercial projects (1,000+ m²), volume pricing applies. Samples (150×150mm or 300×300mm) with the specified finish can be provided for color approval before production. Please provide architectural drawings or panel schedules for a quotation.

A: Common exterior applications:
· High-rise building façades: curtain wall cladding for office towers, residential towers, mixed-use developments
· Airport terminals: large-format panels with PVDF coating - Beijing Daxing, Shenzhen Bao'an, etc.
· Convention and exhibition centers: expansive wall surfaces with flatness and fire compliance
· Stadiums and sports arenas: perforated panels for acoustic treatment, curved panels for iconic forms
· Metro and railway stations: durable, vandal-resistant, low-maintenance wall systems
· Hospital façades: hygienic, fire-rated, easy-to-clean exterior wall panels
· Shopping malls and retail: column cladding, entrance portals, canopy soffits, fascia panels
· Hotel and resort exteriors: architectural feature walls, balcony cladding, louver screens
· University and school buildings: modern educational facility exteriors with varied panel shapes
· Industrial and technology parks: corporate headquarters, R&D centers, clean manufacturing facilities
· Landscape and public art: sculptural elements, information kiosks, noise barrier panels

A: ① Class A fire rating - zero combustibles: solid aluminum panels contain no polyethylene, no mineral core, no combustible material. They are 100% non-combustible metal (Class A, GB 8624). This is the decisive advantage over ACP following global fire safety regulation changes (post-Grenfell). Solid aluminum panels are fully compliant with the strictest fire codes for buildings >24m.
② Exceptional flatness: with reinforcing ribs and precise fabrication, flatness tolerance is ≤2mm over a 2m straight edge - superior to ACP and significantly better than sheet metal without reinforcement.
③ Design freedom: unlimited shape possibilities - flat, folded, curved (single-axis), hyperbolic (double-curved), perforated, embossed, laser-cut patterns. Any architectural vision can be realized in aluminum. 3D BIM models are directly converted to fabrication data.
④ Superior weather resistance: PVDF (70% Kynar 500® / Hylar 5000® resin) coating with 25–30 year color and gloss retention guarantees. Resistant to UV degradation, acid rain, salt spray, and industrial pollutants. No chalking, no fading, no peeling.
⑤ Lightweight: at 2.5mm thickness, 6.75 kg/m² - approximately 1/8 the weight of granite cladding (50–60 kg/m²) and 1/3 the weight of precast concrete, reducing structural steel requirements and foundation costs.
⑥ Corrosion-resistant: aluminum forms a natural protective oxide layer. PVDF coating adds a durable barrier. 5052 alloy offers marine-grade corrosion resistance for coastal buildings (within 5km of the sea).
⑦Impact-resistant: 2.5–3.0mm aluminum is highly dent-resistant (much more than 0.5mm ACP skins). Panel replacement due to impact damage is rare.
⑧ Seamless integration: CNC fabrication ensures perfect-fit joints (±1mm). Panels can integrate ventilation grilles, light fixtures, signage, and architectural lighting seamlessly.
⑨ Sustainable and recyclable: aluminum is 100% recyclable without quality loss. Recycled aluminum requires only 5% of the energy of primary production. LEED and BREEAM credits available. EPD (Environmental Product Declaration) provided.
⑩ Low maintenance: PVDF coating is self-cleaning in rain. No repainting needed over the building's design life. Periodic inspection and cleaning (every 2–5 years) is sufficient.

A: · PVDF (Kynar 500® / Hylar 5000®): the standard for architectural exteriors. 70% PVDF resin + 30% acrylic. 2-coat (primer + color, 25–30μm) or 3-coat (primer + color + clear, 35–45μm) or 4-coat (primer + barrier + color + clear, 45–55μm). Metallic, pearlescent, solid, and special-effect colors.
· FEVE fluorocarbon: alternative to PVDF with similar weather resistance (Lumiflon® resin). High-gloss and vibrant color options that PVDF cannot achieve.
· Powder coating: polyester or super-durable polyester. Matte/satin/gloss, 60–120μm. Suitable for interior cladding, sheltered exteriors, and soffits. More economical than PVDF but with 10–15 year durability.
· Anodizing: electrochemical oxide layer (10–25μm) - natural aluminum, bronze, black, champagne, gold. Hard, metallic appearance. Excellent for contemporary minimalist architecture.
· Wood-grain transfer: realistic wood texture applied by sublimation onto PVDF or powder-coated base. Popular for warm, natural aesthetic on residential and hospitality projects.
· Stone / concrete texture: special-effect PVDF or FEVE coatings that mimic natural stone, terracotta, or concrete - with matching tactile texture (orange-peel, sand, or stucco).
· Custom digital print: UV-resistant ink directly printed onto the aluminum surface and sealed with a clear fluorocarbon topcoat - for artistic façades, branding, and unique architectural expressions.
· Perforated panels: round, square, slotted, or custom hole patterns; open area 10–50%. Used for acoustic treatment, sunscreen shading, ventilation grilles, and decorative effects. Backed with acoustic fleece for sound absorption (NRC 0.60–0.90).

A: Yes, absolutely. Aluminum solid panels are 100% non-combustible. The aluminum alloy itself is classified as Class A (non-combustible material) under GB 8624 and EN 13501-1 (A1 rating for the metal substrate). The PVDF coating, applied at 25–50μm on a metal substrate, does not contribute to fire growth or smoke production.
Key fire compliance points:
· No polyethylene, no mineral core, no adhesives that can burn - the panel is homogeneous non-combustible metal
· Meets the strictest post-Grenfell building regulations worldwide
· Fully compliant for buildings of any height - mandatory for façades on buildings ≥24m in China (GB 50016), ≥18m in UK (Approved Document B), and similar regulations globally
· Smoke toxicity: aluminum does not produce toxic smoke - critical for occupant evacuation safety
· Testing: panels tested to GB 8624 Class A, EN 13501-1 A1, ASTM E84 Class A, BS 476 Class 0
Full fire test reports and certificates from accredited laboratories (National Center for Quality Supervision and Testing of Fire Building Materials, SGS, Intertek) are provided with every project.

A: Typical project timeline:
· Shop drawing approval: 7–14 working days (depending on architectural complexity)
· Sample panel production and approval: 7–10 working days
· Mass production (once approved): 20–35 working days (for 2,000–5,000 m²)
· Large projects (10,000+ m²): production phased over 45–60 working days
Total from order confirmation to first delivery: approximately 5–8 weeks. Rush production (3–4 weeks) is possible at additional cost.
Production capacity: 3,000–8,000 m² per day depending on panel complexity and finishing requirements. PVDF coating is typically outsourced to certified coating lines (AkzoNobel, PPG, Becker approved applicators).

A: Packaging: This is critical for aluminum solid panels due to their custom shapes and delicate surface finish. Each panel is:
· Wrapped in PE protective film (factory applied after coating)
· Separated by foam or corrugated cardboard spacers
· Stacked on A-frame steel stillages or flat wooden pallets
· Secured with ratchet straps (not metal bands that can scratch)
· Enclosed in a plywood crate or covered with waterproof tarpaulin for open-top transport
· Each panel is labeled with a unique QR/barcode linking to the installation drawing position
Shipping:
· Domestic: dedicated flatbed or curtain-side trucks with air-ride suspension
· International: FCL sea freight in 40HQ or open-top containers for oversized panels. FOB/CIF.
Special care: curved and shaped panels require custom crating. We engineer packaging per project to achieve <0.5% transit damage rate.

A: Installation system - ventilated rainscreen principle (the industry standard):
① Substructure installation: aluminum alloy vertical mullions (typically 6063-T5 or T6 extruded profiles) are fixed to the building structure via galvanized steel brackets with thermal isolation pads. Mullion spacing 900–1500mm depending on wind load calculations.
② Thermal insulation layer: mineral wool or rock wool (80–120mm thick, 80–120 kg/m³) is installed against the building substrate with mechanical fixings. Vapor-permeable weather barrier membrane applied.
③ Ventilated cavity: 30–50mm air gap between insulation and the back of the aluminum panels - provides drainage, ventilation, and a pressure-equalized cavity.
④ Panel fixing: aluminum panels are secured to the substructure using stainless steel (304 or 316 grade, depending on environment) self-tapping screws, rivets, or bolts through pre-drilled fixing holes in the panel return edges. Alternative systems: undercut anchoring, cassette clip systems, or visible rivet systems (for an industrial aesthetic).
⑤ Joint treatment: open joints (6–20mm, backed with black EPDM gasket or aluminum baffle for weather protection) - the most common and maintenance-friendly. Alternatively, weather-sealed joints with silicone sealant and backing rod.
⑥ Quality control: laser scanning for panel alignment (±2mm per floor); 2m straight-edge flatness check; pull-out tests on fixings.
Requirements: installation must be by a certified curtain wall contractor. We provide comprehensive installation manuals, BIM/CAD coordination, and on-site technical supervision for the first bay installation.