FS-II Fire Retardant

FS-II is a pyrolitic penetrant formulation that prevents the spread of flame by developing a self-extinguishing reaction. This product is unique because it contains polymers that create a weather tight bond to the molecular structure of wood, therefore, FS-II is an exterior coating as well as an interior coating. This product is white but dries clear and does not change the color of woods. When applied to exterior wood, it has a minimum life expectancy of 5-10 years and should then be reapplied. If FS-II is applied to interior wood, it has a permanent life expectancy. (Cannot be used on varnished or water proofed materials).

FS-II can be used on various porous woods as an interior or exterior fire retardant. This product is widely used on new home wood framing, cedar siding, wood shingles and log homes, etc. 

FS-II is an all in one: 

  • *Class "A" Fire Retardant 

  • *Wood Preserver

  • *Anti Mold Resistant & Anti Termite Resistant Formula

FS-II has been tested to the following standards:

  • *ASTM E-84

  • *NFPA 255 & 701

  • *UL 723

One coat system. All testing was performed using single-coated materials. Class "A" rated. 

FS-II can easily be sprayed from a low pressure airless sprayer. May also be sprayed from a pump-up sprayer or backpack sprayer.

FS-II can be applied as is by spraying or immersing at 125 square feet per gallon, this coverage rate is crucial to maintain the Class A rating. LET CURE FOR A MINIMUM OF 24 HOURS BEFORE TESTING. Please call our technical department for coverage rate.

MSDS     Spec's

  • All orders must be placed online. If you do not want to enter credit card info,
    choose "Print and Call" after filling out billing and shipping address.

  • Questions about orders, shipping costs, product info, etc?
    Customer Support : (815) 634-8717 
    Hours: Mon - Thur 9:00 am - 5:00 pm
    Fri: 9:00 am - 3:00 pm.......(Central Standard Time)