Intumescent coating is a thin fire protection film for structural steel. This guide explains the types, how thickness relates to fire rating, and what a contractor needs from you.
Types of intumescent coating
- Water-based: lower odour, often used for interior steel.
- Solvent-based: often used where conditions are harsher.
- Epoxy-based: used for tougher environments and exposure.
The right type depends on where the steel is, indoors or outdoors, and the conditions it faces. Our team can advise. See intumescent coating.
Thickness and fire rating
The thicker the coating, the longer it protects the steel. The thickness needed depends on the fire resistance period required (commonly 60, 90 or 120 minutes), the steel section and its size. Thin, heavy sections need less than light, slender ones.
What your contractor needs from you
- The steel sections and the drawings.
- The fire resistance period required.
- Whether the steel is indoors or outdoors.
- The finish and colour you want.
Related
Read what is intumescent paint and intumescent vs cementitious fireproofing.
Get a quote
Call +971 52 6700 119 or send us your project details. Evora is approved by Dubai Civil Defence and Abu Dhabi Civil Defence.
Quick answers
How thick should intumescent coating be?
The thickness depends on the fire resistance period required (commonly 60, 90 or 120 minutes), the steel section and its size.
Related guides: intumescent paint for steel · structural steel fireproofing options · cementitious fire proofing in the UAE
Evora is approved by Dubai Civil Defence and Abu Dhabi Civil Defence and works across the UAE. Call or WhatsApp +971 52 6700 119.