PPF aftercare — the first 30 days + ongoing.

The first 48 hours — adhesive cure window

STEK PPF uses a removable, repositionable, crystal-clear high-performance acrylic adhesive. The film is installed wet (slip solution sprayed underneath, then squeegee'd flat). After install, the slip solution evaporates and the adhesive cures to the paint. That cure takes about 48 hours to reach full bond strength.

During those 48 hours:

• Don't wash the car. Water pressure or wash chemicals can lift the edges of fresh film. Even a quick spray-rinse can flow under the edges.
• Don't wipe the surface with anything other than a soft dry microfibre. If you notice a smudge from install slip solution residue, leave it — it'll wipe off easier after cure.
• Don't drive into rain if you can avoid it. Driving in light rain is fine, but standing rain on freshly installed film can find weak edges.
• Park inside or under cover if possible. Direct hot sun isn't a problem for the film, but heat speeds up the cure — so a few cool overnight hours help the adhesive set up correctly.

If you notice small bubbles or slight haziness in the first 48 hours, that's residual install solution evaporating through the film. Normal. Leave it alone — it clears up.

The first 30 days — adjustment + first deep clean

Once you're past the 48-hour cure, the film is fully bonded and behaves like a permanent layer over the paint. The first 30 days are about getting your wash routine right.

First wash (after day 2): rinse with clean water from a hose (no pressure washer at the edges), wash with CarPro RESET or any pH-neutral ceramic-safe shampoo, dry with a microfibre drying towel or a chamois. Avoid scrubbing pressure on the edges — the edges are where film fails first, and they're the last part to fully cure.

First two weeks: stick to weekly hand washes if the car is daily-driven. Resist the urge to use any add-on product (waxes, sealants, spray detailers) until the 30-day mark. Many off-the-shelf detail sprays contain silicones that bond to the film and create a streaky residue that's a pain to remove.

End of week 2-3: if you notice anything weird — edge lift, a contaminant under the film, a visible mark that wasn't there at pickup — text us. Edge lift in the first 30 days is covered under STEK's warranty + our install warranty. We'd rather fix it now than two months from now when the film has caught more dirt at the lift point.

Day 30: the adhesive is fully matured. The film is now stable for the long routine.

The ongoing routine — STEK-approved products

STEK publishes a specific product protocol for their PPF. We hand it to every customer. The products map roughly to the maintenance steps a ceramic-coated car needs:

You can substitute equivalent ceramic-safe products if you can't find the CarPro lineup — the requirement is the category, not the specific brand. CarPro is what STEK officially recommends and what we use in-shop.

What to never use on STEK PPF

From STEK's official maintenance doc:

• Clay bars. They can mar the finish, get caught in edges, and discolor the film. Use Iron-X + Tar-X for chemical decon instead.
• Detergents containing waxes. Wax sits on top of the topcoat and creates a buildup that streaks and traps contaminants.
• Detergents containing sealants. Same problem as wax — incompatible with the film's existing topcoat.
• Detergents containing silicones. Most off-the-shelf "shine"-promising sprays have silicones. They bond to the film and create a slick layer that prevents proper subsequent wash chemistry from working.
• Brush-style automatic car washes. The brushes scrub the topcoat off over time. You'll lose the self-healing performance long before the warranty ends if you regularly use brush washes.
• Pressure washers within 12 inches of edges. High-pressure water can lift even fully cured edges. Wash from a normal distance with a normal-pressure hose nozzle.

Self-heal — when and how it works

STEK's HYDROphobe topcoat self-heals from light scratches under heat. The mechanism: the topcoat has a membrane that wants to self-level when warm. Hot sunshine works. Hot water works. A heat gun works if you have one (low setting, kept moving).

Watch a fresh swirl in the topcoat disappear under a stream of hot water from your shower head — that's the self-heal. STEK's caveat: "Some scratches can be too deep to self-heal but it's very rare that any scratches go all the way through the film." If a deeper scratch doesn't heal under heat, leave it — even if it doesn't fully heal, the film is still doing its job (the underlying paint is still protected).

Final Coat — if you added it at install

If your install included STEK Final Coat as a topcoat (+$300 add-on for the 10→12 year warranty extension), the maintenance routine is essentially identical to the routine above. Final Coat is a ceramic layer on top of the film — same hand-wash, same ceramic-safe shampoo, same product list. The Final Coat won't need recoating during the 12-year PPF warranty; it's there for the warranty extension + the molecular bond with the film's topcoat.

One operational note: your install must be registered at stekshield.com for the warranty extension to apply. We handle this at install — but if you ever sell the car, the new owner needs to be able to look up the warranty. Keep the warranty paperwork with the vehicle's other documents.

If something looks wrong — what to do

Edge lift in the first 30 days: text us immediately. Covered under our install warranty + STEK's product warranty. We'll re-bond the edge or replace the panel if needed.

Visible contaminant under the film (dust, hair, etc.): only addressable by lifting the affected panel and reinstalling. Worth a callback if it's in a visible spot.

Discoloration or yellowing: rare on STEK (non-yellowing TPU per the spec sheet) but can happen if exposed to specific chemicals. Document it with photos, text us, we'll diagnose.

Scratch you can't heal with heat: probably hit the film hard enough to mar the topcoat permanently. Worth a look in person — sometimes a professional polish can address it without panel replacement.

Any question about whether a product is safe: if it's not in the STEK-approved list above, text us before using it. The cost of asking is zero; the cost of using the wrong product is potentially permanent film damage.

Why this routine matters

STEK PPF has a 10-year manufacturer warranty (12 with Final Coat registered). That warranty is conditional on the film being maintained correctly. The maintenance protocol above is what "maintained correctly" means — it's not optional best practice, it's the spec for keeping the warranty active.

More practically: PPF is an investment that pays back over years. A $1,800 Full Front install is worth it because the film prevents rock-chip damage that would otherwise cost more in touch-up paint and resale-value drop. The math works if the film stays in good condition. It stays in good condition if you wash it like a ceramic-coated car. The product list above is what makes that work.

For the broader picture on PPF — coverage decisions, brand comparisons, vehicle-specific guides — see the PPF guides hub. For the wash protocol that applies to ceramic-coated cars (very similar), see ceramic coating maintenance.

Beyond 30 days — the long-term routine

The first 30 days are the cure window + adjustment period. The maintenance routine beyond day 30 follows the same principles at lower-intensity cadence:

• Weekly to bi-weekly: hand wash with pH-neutral ceramic-safe soap. Same technique as the first month. The film cures fully by day 30 + can handle routine wash without special accommodations.
• Monthly: visual inspection. Check for edge lift, surface contamination, any sign of underlying paint damage that might have happened (rock chip that didn\'t penetrate film but might have stressed the paint underneath). Address anything visible immediately.
• Quarterly: SiO₂ ceramic-safe quick-detailer spray if you have Final Coat over PPF — refreshes hydrophobic performance. Skip if PPF only (standalone PPF doesn\'t require ceramic-style booster spray).
• Annually: Iron-X decontamination. Brake-dust iron accumulates on PPF over time; annual decon prevents embedded contamination. We can do this as part of a Maintenance Wash visit or as a standalone service.
• Every 2-3 years: professional inspection. Free at our shop. We check film integrity + edge adhesion + transmission of any underlying paint stress. Most installs need no work; the inspection is for early-warning.
• Year 10-12 (warranty window end): recoat decision. Film + Final Coat combined system reaches end of rated life. Schedule removal + fresh install if you\'re keeping the vehicle long-term.

Common owner mistakes that void or shorten the PPF warranty

Specific actions that can void the manufacturer warranty or meaningfully shorten film life:

Modifying the vehicle in ways that affect the film: body kits, panel replacements, repaints under PPF — all can void warranty on affected panels. Coordinate any vehicle modifications with us in advance so we can plan film removal + reinstall around the work.

Aftermarket "PPF restoration" products: sprays or polishes marketed as PPF restorers. Most aren\'t tested with STEK chemistry; some can react with the topcoat. Stick with manufacturer-recommended care products or text us before applying anything experimental.

Pressure-washing too aggressively: 4000+ PSI direct on film edges can lift edges over time. Use moderate pressure (1500-2500 PSI) + indirect angle.

Skipping the cure window for first wash: 48 hours minimum for hand wash. Earlier risks adhesive disruption + can void warranty on affected panels.

Acid wheel cleaners migrating onto film: hydrofluoric or acidic chemistry attacks the PPF topcoat. Use pH-neutral wheel cleaner; if you must use stronger products, rinse the surrounding film panels immediately + thoroughly.

Letting damage progress without addressing: small edge lift caught in week 1 is easy to fix; edge lift left for months becomes panel-level film replacement. Quick response saves money.

Most of these are easy to avoid with the basic routine in this guide. The film does the protection work; you do the wash routine + avoid the obvious hazards. The combined system delivers the rated 10-12 year warranty window.