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Flame Seal FX950

Flame Seal FX950

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Flame Seal FX950 (formally FS84) is a water-based Intumescent paint that can be applied to most substrates including, lumber, plywood, OSB, and Gypsum. FX950 is fully tested and has a rating ranging from Class A to 30 minutes to meet building codes domestically, internationally, and for the Wildfire Urban Interface. When Flame Seal FX950 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. FX950 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.

Sold in 5 Gallon Containers


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

Product Specifications

Weight Per Gallon: 11.7

Color: White

Solids by Weight: (%SBW): 72%

Solids by Volume: (%SBV): 65 +/- 2%

VOC:  16 g/L

Density: 1.37-1.45

PH: 7.5 – 8.5

Shelf-Life: 6 Months (Unopened)