Resources / Comparison
Coating Systems Compared
PVDF leads on long-term UV and color retention, PUPA on abrasion resistance, HDPE balances weathering and cost for general exterior use, PE suits interior or short-exposure work, and epoxy stays as a primer or back-coat layer rather than an exposed finish.
| System | Exterior vs interior | Abrasion resistance | UV / color retention | Best-fit applications |
|---|---|---|---|---|
| PVDF | Exterior: long-term, coastal-capable | Good | Best: minimal chalking over decades | Rolling Shutters, Roofing, Gutters & Downspouts, ACP (Aluminum Composite Panels), Cladding, Truck & Trailer Panels |
| PUPA | Exterior: high-wear/cycling duty | Best: built for abrasion | Good | Rolling Shutters |
| HDPE | Exterior: general inland duty | Good | Good | Roofing, Gutters & Downspouts, Cladding, Truck & Trailer Panels |
| PE | Interior or short-exposure exterior | Fair | Fair: chalks and fades faster outdoors | Signage |
| Epoxy | Interior / primer or back-coat only | Good (as a primer layer) | Poor: not suited to UV exposure | Primer / back-coat use |
Coating warranties run 5 to 20 years depending on application and installation environment (coastal vs. inland). Confirmed per specification, not a flat number we advertise site-wide.
Frequently asked questions
- Which coating has the best UV and color retention?
- PVDF, by a clear margin. Its carbon-fluorine bond resists UV breakdown better than any other coil coating chemistry, which is why it's the default for facades and long-term architectural exteriors.
- Which coating is best for high-wear, high-cycle applications?
- PUPA. It's formulated for abrasion and mar resistance, which is why it's the standard choice for rolling shutters and other applications with constant mechanical contact rather than just weathering.
- Is epoxy ever used as a visible exterior finish?
- Not recommended on its own: epoxy has poor UV stability and is generally used as a primer or back-coat layer. Epoxy-PE pairs epoxy's adhesion with a polyester topcoat for better exposed performance.
- How long do coating warranties typically run?
- Coating warranties generally run 5 to 20 years depending on the coating system, the application, and the installation environment. Coastal exposure shortens the practical service life compared to inland. Confirm the specific warranty for your spec rather than assuming a flat number.