What is Fusion FPP?
KBS Fusion FPP Flexible Plastics Primer is a flexible surface primer that bonds topcoats to parts that bend, such as plastic bumper covers, dashboards and trim, and also primes urethane, fiberglass, carbon fiber, wood and metal. Fusion FPP is a medium grey aerosol that dries to the touch in 10 minutes and is ready to topcoat in 30 minutes.
10 Minutes
Dry to the Touch
30 Minutes
Ready to Topcoat
18 sq. ft.
Per Can, Single Coat
Ever wanted to change the color of a flexible surface like plastic? Paint needs a primer that can move with the part underneath it. Fusion FPP coats fast and easy, gives a tight bond for superior paint adhesion, and is made for hard-to-paint surfaces such as bumper covers, dashboards, body panels and household plastics.
Fusion FPP is flexible, can be block sanded, and hides minor surface defects. The fast dry time lets you build film thickness quickly, and the primed surface is an excellent base for BlackTop, KBS MAXX, KBS Top Coater, KBS Top Coater Aerosol and other topcoats.
Satisfaction guaranteed. See the KBS Coatings guarantee.
How Fusion FPP Grips Bare Plastic
Fusion FPP primes flexible plastics, urethanes, fiberglass, carbon fiber, wood and metal, and suits melamine after a light sanding. Fusion FPP is made for surfaces that bend, so a bumper cover or flexible trim piece can move without the primer cracking under the topcoat. For rigid bare metal and hard plastic, Fusion SEP is the KBS primer.
- Flexible plastics: bumper covers, dashboards, flexible trim and household plastic surfaces.
- Urethane: flexible urethane parts and body panels that need paint to stay put when they flex.
- Fiberglass and carbon fiber: panels and parts that need a uniform grey base before color.
- Wood: primes clean, dry wood for a topcoat.
- Metal: Fusion FPP can also be applied to metal when a project mixes plastic and metal parts.
- Melamine: sand lightly with fine sandpaper or steel wool first for maximum adhesion.
Fusion FPP is a flexible primer, so the primer moves with plastic parts that bend. Fusion FPP is dry to the touch in 10 minutes and ready for BlackTop, KBS MAXX or KBS Top Coater in 30 minutes, with no sanding needed if the topcoat goes on within 7 days.
- Built to flex: made to prime flexible surfaces so they can be painted.
- Fast dry: dry to the touch in 10 minutes, so film thickness builds quickly.
- Topcoat in 30 minutes: the same 30 minutes applies under BlackTop, KBS MAXX, KBS Top Coater and KBS Top Coater Aerosol.
- Tight bond: superior paint adhesion on hard-to-paint surfaces.
- Sandable: Fusion FPP can be block sanded and hides minor surface defects.
- 7 day recoat window: no sanding needed if coated over within 7 days; after that, scuff with 300 grit.
- Medium grey color: a neutral base under most topcoat colors.
- Low gloss: dries to a primed surface under 20% gloss at 60 degrees.
- Heat rated to 250°F: dried Fusion FPP withstands temperatures up to 250°F.
Fusion FPP is used on automotive plastic such as bumper covers, dashboards, body panels and trim, on fiberglass and carbon fiber parts, and on household plastic surfaces. Fusion FPP is also the primer under KBS Bed Renu when a plastic bumper needs a textured, bedliner-style finish.
- Automotive
- Bumper covers, dashboards, body panels, flexible trim and plastic interior pieces.
- Textured bumpers
- Prime with Fusion FPP, then coat with KBS Bed Renu for a textured bumper finish.
- Composites
- Fiberglass and carbon fiber panels, hoods and accessories.
- Home and shop
- Household plastic surfaces, wood and mixed plastic and metal projects.
How Do You Apply Fusion FPP?
- Apply between 55 and 82°F (13 to 28°C).
- Clean and dry the surface. KBS Klean, a water-based cleaner and degreaser, is recommended if cleaning is needed.
- Sand plastic and melamine lightly with fine sandpaper or steel wool for maximum adhesion.
- Shake the can until the mixing ball moves freely, for at least one minute. Hold the nozzle 10 to 14 inches from the surface.
- Apply thin, covering coats with steady, even strokes. One light coat is generally enough; when needed, apply 2 to 3 light to medium coats with 3 to 5 minutes between coats.
- Wait 30 minutes, then sand or topcoat. Topcoat within 7 days, or scuff with 300 grit first.
Safety: wear protective gloves and safety glasses at all times when using Fusion FPP. Clean up with KBS #1 Thinner or lacquer thinner.
One aerosol can of Fusion FPP covers up to 18 square feet in a single coat. A single coat is generally all Fusion FPP needs. Plan extra cans when the job calls for 2 to 3 light to medium coats to fill small imperfections, since each coat uses the same coverage.
| Size | Typical Coverage |
|---|
| Aerosol can | Up to 18 sq. ft., single coat |
Dry times: 10 minutes to the touch, 30 minutes to sand or topcoat.
Pro Tip: clear the spray head right after use by turning the can upside down and spraying until no more primer comes out. If the tip clogs, remove it and clean it with a fine wire.
Fusion FPP is for surfaces that bend and flex, while Fusion SEP is a self-etching primer for rigid surfaces such as bare metal and hard plastic. Fusion FPP is ready to topcoat in 30 minutes, and Fusion SEP in 1 hour. Both KBS primers are medium grey and rated to 250°F.
| | Fusion FPP | Fusion SEP |
|---|
| Made for | Flexible surfaces that bend | Rigid surfaces that do not flex |
| Surfaces | Flexible plastics, urethanes, wood, fiberglass, carbon fiber, metal | Bare steel, aluminum, galvanized, most hard plastics, fiberglass, cured RustSeal |
| Ready to topcoat | 30 minutes | 1 hour |
| No sanding needed if topcoated within | 7 days | 24 hours |
| Sizes | Aerosol only | Aerosol, 8 oz, pint, quart, gallon, 5 gallon pail |
| Aerosol coverage | Up to 18 sq. ft. | Up to 35 sq. ft. |
Fusion SEP is the better choice for rigid parts and for larger jobs, since Fusion SEP comes in six sizes and can be brushed, rolled or sprayed. Do not put a rigid primer on a part that flexes. See the full Fusion SEP vs Fusion FPP comparison.
Fusion FPP is the primer step. The full system for a plastic part runs in four steps.
- Step 1: KBS Klean
- Clean and degrease the part, rinse, and let it dry.
- Step 2: Sand lightly
- Fine sandpaper or steel wool for maximum adhesion.
- Step 3: Fusion FPP
- Thin, covering coats. Ready to topcoat in 30 minutes.
- Step 4: Topcoat
- BlackTop, KBS MAXX, KBS Top Coater or KBS Top Coater Aerosol within 7 days, or KBS Bed Renu for a textured bumper.
Start with KBS Klean
Fusion FPP Directions and TDS
Temperatures, spray distance, coats, dry times and cleanup for Fusion FPP.
Read Directions →
How to Get Paint to Stick to Plastic
The clean, scuff, prime and topcoat steps that keep paint on plastic parts.
Read Article →
Fusion SEP vs Fusion FPP
Which Fusion primer fits rigid parts and which fits parts that flex.
Read Article →
Fusion FPP Questions and Answers
Answers to common Fusion FPP questions from KBS customers.
Read Answers →
KBS Bed Renu for Plastic Bumpers
A textured, bedliner-style bumper finish that goes over Fusion FPP.
View Bed Renu →
KBS How-To Video Library
Prep, priming and topcoat videos from the KBS Coatings team.
Watch Videos →
Have questions before you buy? Find answers to the most common Fusion FPP questions below, or
order Fusion FPP now.
The best primer depends on whether the plastic flexes. For parts that bend, such as bumper covers, dashboards and flexible trim, use a flexible primer like KBS Fusion FPP so the primer moves with the part. For rigid hard plastic, KBS Fusion SEP self-etching primer is the better fit.
KBS Fusion FPP is made for flexible plastic bumper covers. Clean the bumper with KBS Klean, sand lightly with fine sandpaper or steel wool, then apply thin coats of Fusion FPP. The bumper is ready for BlackTop, KBS MAXX, KBS Top Coater, KBS Top Coater Aerosol or KBS Bed Renu in 30 minutes.
Paint sticks to flexible plastic when it goes over a flexible primer. Over Fusion FPP, KBS approves BlackTop, KBS MAXX, KBS Top Coater and KBS Top Coater Aerosol, plus KBS Bed Renu for a textured bumper finish. Topcoat after 30 minutes and within 7 days, or scuff the primer with 300 grit first.
KBS recommends priming bare plastic before painting it. Plastic that flexes needs a flexible primer such as Fusion FPP, because a rigid primer on a part that bends can crack and lose adhesion over time. Rigid hard plastic can take Fusion SEP instead.
Fusion FPP is dry to the touch in 10 minutes and ready to sand or topcoat in 30 minutes. The 30 minutes applies under every KBS topcoat, including BlackTop, KBS MAXX, KBS Top Coater and KBS Top Coater Aerosol.
Yes. Sand plastic and melamine lightly with fine sandpaper or steel wool before applying Fusion FPP for maximum adhesion. Clean and dry the surface first; KBS Klean is recommended if cleaning is needed.
One light coat of Fusion FPP is generally enough. To fill small imperfections, apply 2 to 3 light to medium coats with 3 to 5 minutes between coats, holding the can 10 to 14 inches from the surface.
Topcoat Fusion FPP within 7 days and no sanding is needed. After 7 days, scuff the Fusion FPP with 300 grit before applying the topcoat.
Apply Fusion FPP between 55 and 82°F (13 to 28°C). Once dry, Fusion FPP withstands temperatures up to 250°F.
Yes. Along with flexible plastics, urethanes, wood, fiberglass and carbon fiber, Fusion FPP can be applied to metal. For rigid bare metal on its own, Fusion SEP self-etching primer is the KBS primer made for that job.
