This article discusses what to consider when selecting and applying cellulosic intumescent coatings. It begins by explaining cellulosic and hydrocarbon fires, then outlines the main types of passive fire protection used to safeguard materials like dense concrete, lightweight cementitious, man-made mineral fibre, and dry-fit cladding solutions, concluding with a discussion of thin and thick film intumescent coatings.
The focus then shifts to thin film intumescent coatings, also known as cellulosic intumescent. It highlights that proper surface preparation and application are essential for the coating’s long-lasting effectiveness.
Examples of poor workmanship are given, such as applying intumescent coatings with a dry film thickness (DFT) that falls below the required specifications. This can result in inadequate fire protection, non-compliance with standards, and a reduced time for escape, potentially risking lives.
Additionally, the article discusses lessons from other markets and new regulations, including the Golden Thread requirement for higher-risk buildings, which states that all information must be stored, managed, and utilised throughout a building’s lifecycle.
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