Checklist for the Correct Specification & Application of Intumescent Paint

Intumescent Coating Specification Implications
An overview of points to consider; suitable products, correct application, compliance & certification.

Products must be suitable.

Incorrect DFT (dry film thickness) design means you will NOT achieve the desired specification. Factors effecting DFT are:

• Fire resistance period
• Steel profile and section size
• Use – beam/column/bracing
• Nature of exposure to fire
• Environmental (internal / external)
• Floor design / construction – decking type – holorib/bison
• Cellular web openings
• Incorrect application also means non compliance with the specification
• Look for steel wet film checks
• Compliance needs to be proven – an auditable trial
• Always ask for a copy of marked drawings or a detailed schedule showing the thicknesses applied to each steel section
• Ensure compatibility checks are carried out

RELATED DOCUMENTS (pdf):

Spec & installation - intumescent coatings

Sample Report - Intumescent Project

Intumescent Paint Spec Flow Chart