Flame Seal 84 (Fireproof Paint)


Flame Seal 84 (FS84) is a water-based Intumescent paint that can be applied to most substrates including, lumber, plywood, OSB, and Gypsum. FS84 is fully tested and has a rating ranging from Class A to 2 hours to meet building codes domestically, internationally, and for the Wildfire Urban Interface. When Flame Seal 84 is exposed to fire or extreme heat, a protective layer of Carbon Foam develops and prevents the fire and heat from transferring to the substrate. FS84 is a low VOC fire retardant paint with a smooth white architectural grade finish. This product can be paired a primer and a top-coat. For best application Flame Seal recommends using an airless sprayer, please see application guide for more information.

Flame Seal 84 Documentation

Data Sheet

Safety Data Sheet

Application Guide

VOC Emission Certificate 

CSI Master Specifications

09 96 46 Intumescent Painting


Substrate Test Standard Result WFT DFT Coverage Rate sq ft/gal
Wood ASTM E 84 Class A 9 6 180
Wood CAN/ULC S102 Class A 9 6 180
Wood ASTM 2768 Pass 20 13 80
Gypsum ASTM E119 2 Hours 60 40 27
Gypsum CAN/ULC S101 2 Hours 60 40 27

Primer & Top Coating

Primers and top coats may be required in high humidty applications or when a desired color is needed. The use of primers and top coats have been tested to the ASTM E-84 and ASTM 2768. Testing data shows that the use of top coats have no affect on the burn performance of Flame Seal 84. For a list of recommended primers and top coats please email dylan@flameseal.com.


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