How long should substrate temperatures be maintained after applying TFIFRM?

Maintaining substrate temperatures after applying spray-applied fireproofing materials is crucial to ensure proper curing and performance of the fireproofing system. The correct duration for maintaining these temperatures is typically set at 72 hours. This timeframe allows for adequate curing and bonding of the fireproofing material to the substrate, which is essential for effective fire protection.

During the first 72 hours after application, temperature fluctuations can affect the material's adhesion and ultimately its effectiveness in fire protection. Lower temperatures can hinder the curing process and lead to inadequate hardness and structural integrity of the fireproofing layer, potentially compromising its performance under fire conditions.

By adhering to the 72-hour guideline, one helps ensure that the fireproofing material has fully set and is effectively integrated with the substrate, maximizing safety and performance once the system is in use.