SYSTEM 20 National Rule 4:1 High Build Primer - 1 Gallon Tin - W - U-POL

The U-POL SYSTEM 20 National Rule 4:1 High Build Primer (Model 2277) is a professional-grade automotive and industrial primer designed for exceptional filling and surface preparation. This versatile primer delivers excellent build and leveling properties, making it ideal for achieving a consistently smooth foundation on a variety of substrates before topcoat application.

Key Features

• High Build Formula: Provides excellent filling capabilities, effectively leveling out surface imperfections for a superior finish.
• Effortless Sanding: Engineered for easy sanding, whether wet or dry, which helps reduce preparation time and effort in busy workshops.
• Versatile Application: Can be applied directly to bare metal, most plastics, and over unsanded E-coat, offering flexibility for diverse repair scenarios.
• Aluminum & Galvanized Compatibility: When working with aluminum and galvanized surfaces, an acid etch primer such as U-POL ACID#8 is recommended for optimal adhesion.
• Tintable: This primer can be tinted with up to 10% urethane mixing base, allowing for better color holdout and reducing topcoat consumption.

Applications

This high build primer is suitable for a wide range of professional applications, including spot repairs and larger panel work. It is compatible with properly prepared bare metal, aluminum, galvanized steel, GRP (glass reinforced plastic), SMC (sheet molded compound), fiberglass, polyester filler, and existing OEM surfaces, making it an essential component for comprehensive automotive and industrial refinishing projects.