What Is PVDF Coating

SEASON perforated cladding from the company product page. The finish listed is PVDF .

Why choose PVDF for an outside wall

Sunlight can break down paint over time. The color may fade, and a loose, chalk-like layer may form on the surface. PVDF resins resist UV light, which helps the finish keep its look . That matters on a broad wall where a slight shade change is easy to see.

Think beyond the cost of paint. If a high wall needs a new finish, access, labor and site work can cost more than the paint itself. This is why long-term color hold can be worth paying for. The value is strongest where sun exposure is high and future access is hard.

A good finish still needs good metalwork. PVDF will not stiffen a thin panel, fix a poor joint or stop a dent. Choose the panel and its finish as two linked parts of the same job.

What goes into a PVDF finish

What 70 percent PVDF means

In a 70% PVDF topcoat, the figure refers to the PVDF share of the resin binder by weight. It does not mean 70% of the wet paint, or 70% of the whole panel. Paint also contains pigments and other parts .

Arkema sets a minimum 70% PVDF resin requirement for coatings sold under its Kynar 500 license . Kynar 500 is a resin brand. PVDF is the resin type. A quote that says only “PVDF” does not prove the brand, the resin share or a test grade.

Ask for the paint maker, the named coating system and its data sheet. Those details make two quotes much easier to compare.

How the coating is applied

For a common factory-baked liquid PVDF system, the metal is cleaned and pretreated first. This step helps the paint bond to the metal. A primer goes on next, followed by the color coat. The coating is then baked under the paint maker’s set conditions .

Some systems include a clear coat. The right number of coats and film thickness depend on the named system. More coats do not, by themselves, prove a better finish.

Flat coil can be coated before it is formed. Finished parts can also be spray coated. Ask which route is used for your panels, and how cut edges, holes and folds are handled. A smooth face is only part of the job.

What the sample can tell you

Use a real coated sample to check color, gloss and texture. View it in the light the building will face. A screen image cannot show an exact shade. For a large wall, agree on a sample before the order and keep it for checks when the panels arrive.

How to choose the right coating

PVDF coating and powder coating

These names do not describe the same thing. PVDF names a resin. Powder coating describes the form in which a coating is applied. Powder products use different resins and can meet very different test levels.

A standard polyester powder may suit a sheltered indoor ceiling. A tested PVDF system is worth a close look for a sunlit facade. Yet some high-grade powder systems also meet AAMA 2605 . Ask what the named product can do, rather than judging it by “powder” or “liquid” alone.

What AAMA 2605 tells you

AAMA 2605 sets a high level of performance for organic coatings on aluminum. PPG’s guide describes a ten-year South Florida exposure test, along with other checks . This is a test period, not a promise that your panels have a ten-year warranty.

The letters PVDF on a quote do not prove that the finish meets AAMA 2605. Ask for evidence for the proposed system and confirm the standard edition required by the project. The test claim should match what will be supplied.

When paying more makes sense

For a tall facade in strong sun, the cost of future work deserves real weight. For a dry indoor ceiling, there may be less to gain from PVDF. Spend on the needs of the site. A premium finish is useful when its strengths solve a real problem.

What to check before you order

Do not stop at the color code. Before you approve a quote, get clear answers to these five points.

· Which paint maker and coating system will be used? Ask for the resin share and the data sheet.

· Which surfaces will be coated? Confirm the face, back, folds, holes and cut edges.

· What film thickness and tests are required? Put the agreed limits in the order.

· Which sample sets the color and gloss? Keep a signed sample for the site check.

· What does the warranty cover? Check the site limits, care rules, exclusions and who will handle a claim.

How long does PVDF coating last

There is no single lifespan for every PVDF finish. The paint system, surface prep, site and care all affect the result. A long test history for a resin is useful evidence, but it is not a warranty for a specific panel order.

The same care applies to salt exposure. A PVDF topcoat alone is not enough to judge a coastal job. Confirm the full system and its limits with the supplier. Follow the written cleaning guide and have any damaged areas checked.

PVDF options from SEASON

For a facade with a pattern of holes, start with SEASON’s PVDF Coating Aluminum Cladding Panel With Customized Perforation. The product page lists aluminum alloy 1100 and a PVDF finish . Ask for the hole pattern and coating system to suit your design.

SEASON open cell ceiling. The product page lists PVDF among its finish options .

For an open grid look, SEASON also lists a 100 × 100 mm open cell ceiling with PVDF as a finish option . Choose the finish after you define the exposure. An indoor grid and an outdoor soffit need different checks.

Send SEASON your drawings, panel sizes, color and site conditions. Ask for a coating proposal and a sample to review. That gives you a sound basis for the order, with fewer gaps between the finish you expect and the panels you receive.