Repair Systems — 03 — Facade & External Envelope
Cladding and metal panel recoating systems — PVDF / fluoropolymer
PVDF (polyvinylidene fluoride) and fluoropolymer recoating systems are the highest-performance option for aluminium composite panel (ACP) and metal cladding facades where the original factory coating has chalked, faded or delaminated. Meeting AAMA 2605 for colour retention and chalk resistance, they provide 15–25 year service life in harsh exterior exposure. Application requires specialist preparation and spray equipment — not a conventional roller or brush paint.
Metal Cladding Recoating — PVDF & Fluoropolymer Systems
PVDF (polyvinylidene fluoride) coatings — sold under brand names including Kynar 500 and Hylar 5000 — are the global benchmark for architectural aluminium cladding. Applied as factory-finished coatings to curtain wall, ACP panels, louvres, and extrusions, they deliver 20–25 year service life with minimal chalking or colour fade in Australian UV conditions. When original PVDF or powder coat degrades, remediation involves either factory recoating of replacement panels or site-applied fluoropolymer systems for existing cladding.
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5 products shown
Valspar Fluropon Classic II PVDF
Premium 70% PVDF (Kynar 500) factory-applied fluoropolymer coating — benchmark for architectural aluminium cladding, curtain wall and ACP panels — exceptional UV and colour stability over 20+ years
PPG Duranar XL PVDF
70% PVDF (Kynar 500) factory fluoropolymer coating — PPG's flagship architectural metal coating for curtain wall, aluminium extrusions, and ACP — superior chalk and fade resistance to AAMA 2605
Axalta Alesta PVDF Powder
PVDF-based powder coating for architectural aluminium — fluoropolymer performance in a solvent-free powder form — factory-applied via electrostatic spray — excellent UV and chalk resistance
Interpon D3020 PVDF Powder
AkzoNobel's premium 70% PVDF powder coating — Interpon D3020 meets AAMA 2605 in powder form — factory-applied to aluminium cladding, curtain wall, and louvres — widest colour range of any PVDF powder
Wattyl Industrial Fluorocoat
Site-applied fluoropolymer coating for metal cladding recoating — Wattyl's high-performance architectural metal recoat system — suitable for site application to existing aluminium, steel, and ACP panels where factory PVDF recoating is impractical
System Comparison
| Product | Brand | Chemistry | Application | Standard | Coastal | Site Repair | Primary Use |
|---|---|---|---|---|---|---|---|
| Fluropon Classic II | Valspar | 70% PVDF (Kynar 500) | Factory liquid spray | AAMA 2605 | Yes | Field touch-up only | Curtain wall, ACP |
| Duranar XL | PPG | 70% PVDF (Kynar 500) | Factory coil/spray | AAMA 2605 | Yes | Duranar field coat | Extrusions, curtain wall |
| Alesta PVDF | Axalta | PVDF powder | Factory electrostatic | ≈ AAMA 2605 | Yes | Liquid touch-up | Extrusions, fabricated Al |
| Interpon D3020 | AkzoNobel | 70% PVDF powder | Factory electrostatic | AAMA 2605 | Yes | D liquid touch-up | Curtain wall, louvres |
| Industrial Fluorocoat | Wattyl | Fluoropolymer 2-pack PU | Site airless spray | N/A (proprietary) | Yes (+ primer) | Full system — site | ACP/aluminium recoating |
Do not confuse PVDF and fluoropolymer cladding recoating systems with:
- UV-resistant enamel topcoats for metal — conventional solvent or water-based metal enamels are not fluoropolymer systems and will not achieve the 20-year colour retention and chalk resistance of PVDF; they are appropriate for balustrades and lintels, not aluminium curtain wall or ACP panels
- Standard polyester powder coating — polyester powder coat meets AAMA 2604 (5-year colour retention) at best; PVDF powder coat (Interpon D3020, Axalta Alesta PVDF) meets AAMA 2605 (10-year minimum) — specifying 'powder coat' without the PVDF qualifier will produce a shorter-life finish
- Anti-corrosion paint systems for steel — zinc-rich and epoxy primer systems for steel are not applicable to aluminium cladding; aluminium is corrosion-resistant but requires PVDF or powder coat for UV/aesthetic protection, not zinc-rich anti-corrosion paint
- Exterior acrylic or masonry coatings — acrylic masonry paint systems are not formulated for non-porous aluminium substrates and will not adhere to metal cladding panels without specialist adhesion primer
- Anodising — anodising is an electrochemical surface treatment applied to aluminium profiles at manufacture; it cannot be applied as a site or factory recoating process to existing cladding — specify PVDF or powder coat for recoating scenarios
Disclaimer
General technical information only. PVDF recoating is a specialist application — standard paint contractors are not qualified for this work. Panels with delaminated PE cores or fire-safety compliance issues must be assessed separately. Confirm applicator licensing, surface preparation and warranty terms with the system manufacturer. Not a substitute for professional advice.