KLEAN-STRIP Bulldog Adhesion Promoter 1 Quart — Fast-Dry No-Mix Spray Primer for Plastics & Metals

Klean-Strip Bulldog Adhesion Promoter is a fast-drying, no-mix spray primer that boosts paint adhesion on plastics, metals, and aluminum while filling 320-grit scratches.

Designed for body shops and DIY auto restorers, this one-quart adhesion promoter bonds paint to hard-to-coat surfaces like TPO, polypropylene, SMC, fiberglass, pre-painted metals, and aluminum. It dries tack-free in about five minutes, stays active up to 24 hours for flexible prep scheduling, and requires no mixing—simply spray and proceed to basecoat or clearcoat. The formula also improves edge wetting, flake orientation, and color consistency, making it a time-saving choice for repair and refinishing projects.

How fast will this adhesion promoter let me continue with painting?

The Bulldog formula sets up very quickly so you can reduce sanding and downtime. It becomes tack-free in roughly five minutes and remains effective for up to 24 hours if you need to delay topcoating.

• Tack-free dry time: ~5 minutes under recommended conditions
• Active window: up to 24 hours for follow-up coating
• If left longer than 24 hours: lightly abrade and reapply a light coat
• No mixing required—spray immediately from the can

Which surfaces and plastics does it work on?

Bulldog was developed to adhere to difficult substrates commonly found in modern vehicles and equipment. It bonds to factory paints and a wide range of plastics and metals without special adhesion promoters or extra preparation steps.

• Compatible surfaces: automotive plastics (TPO, polypropylene, SMC), fiberglass, aluminum, pre-painted metals
• Prepares surfaces by filling up to 320-grit scratches for smoother topcoats
• Helps prevent delamination and improves coating flexibility
• Suitable for both body shop and enthusiast repair environments

How should I apply it for best results?

Application is straightforward: clean the surface, lightly abrade as needed, then spray evenly. Follow safety and TDS guidance for ventilation, temperature, and flammability precautions.

• Surface prep: degrease and remove contaminants; scuff with appropriate grit
• Application: spray uniform coats—no mixing or reducer required
• Tintable: can be added to basecoat/clearcoat to enhance flexibility and appearance
• Storage & safety: refer to the Technical Data Sheet for handling and storage tips

What performance improvements can I expect in finish and durability?

Beyond adhesion, Bulldog promotes better visual outcomes and smoother repairs. It improves how metallic flakes orient, enhances color consistency, and aids edge wetting so topcoats lay down more evenly.

• Improves flake orientation and consistent metallic appearance
• Enhances edge wetting for cleaner transitions and less orange-peel
• Can be blended into base or clearcoat for added flexibility
• Reduces the need for aggressive sanding on many substrates

Who is this for: Klean-Strip Bulldog Adhesion Promoter is aimed at auto body shops, collision repair technicians, and serious automotive DIYers who need a reliable, quick-dry primer to prepare plastics, aluminum, and painted metals for topcoats. If you want to save prep time, improve final appearance, and work without mixing solvents or primers, this one-quart, no-mix solution is built for those tasks. Always read the Technical Data Sheet before first use to ensure compatibility with your paint system and to follow safe handling procedures.