Durability of Acrylic Intumescent Coating 

This presentation was made for an online AMPP conference called FireCorr21. This case study shows how an acrylic intumescent should be selected to protect steel structures located in a coastal environment from cellulosic fire. It evaluates the merits of ISO 12944 with reference to Intumescent coatings and provides details of the benefits of using EN 16623 as a standard for intumescent coating system. It explains how ISO 9223 was used to determine the corrosive environment of the location the building was located at. it helps provide clarity on why water based intumescent should be used in a C4 environment and how a solvent based intumescent tested and approved to X category as per EAD 350402 shall only be used in a C4 environment.