PPG SigmaFast 20 – High-Build Zinc Phosphate Alkyd Primer

PPG SigmaFast 20 is a high-build zinc phosphate primer formulated with a modified alkyd resin to deliver strong anticorrosive performance in atmospheric environments. Designed for efficient steel protection, it provides reliable rust inhibition and excellent adhesion, making it suitable for both new construction and maintenance applications.

SigmaFast 20 can also be specified as a single-coat direct-to-metal system for ISO 12944 C1 and C2 environments, offering a cost-effective and streamlined coating solution for low-corrosivity conditions.

Key Features:

• High-build zinc phosphate anticorrosive primer

• Modified alkyd resin for strong adhesion and durability

• Suitable for atmospheric steel protection

• Can be used as single-coat DTM for ISO 12944 C1–C2 environments

• Ideal for commercial, industrial and light-duty applications

• Easy to apply by brush, roller or spray

Surface Preparation

Technical Data

Directions for Use

Data Sheets