Fireproof Coating Thickness Guide for Steel Structures

Fireproof coating thickness is not a single number for “60/90/120 minutes.” The required DFT depends mainly on fire rating time, the steel section factor (Hp/A), and the tested/certified system—manufacturers use loading tables or calculation tools to determine the correct thickness for each member. What Is Fireproof Coating? Fireproof coatings are passive fire protection (PFP) materials applied to steel […]

Coating for Steel Structure Projects

Steel structures fail faster when coatings are under-specified, poorly applied, or selected as a single “paint” instead of a coating system. ISO 12944 is widely used because it guides selection of a coating system based on environmental corrosivity and durability (time to first major maintenance), and it also points to design and surface-prep factors that prevent […]

ISO 12944 Corrosion Categories Explained (C3, C4, C5)

ISO 12944 helps engineers select a protective coating system by defining atmospheric corrosivity categories (C1 to C5 and CX) and linking the environment + durability target to coating system performance expectations. If your project spec says “C3/C4/C5,” it’s essentially telling you how aggressive the site is and how robust the coating system needs to be. […]