Flamex PF-2 Exterior Fire Retardant Spray


Flamex PF-2 Exterior Fire Retardant Spray

(3 customer reviews)



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Flamex PF-2 exterior fire retardant spray is a water-based, post-treatment wood fire retardant. Flamex PF-2 is also a wood preservative that penetrates the wood pores and seals itself within the substrate. This exterior fire retardant protects the wood by developing a self-extinguishing reaction in contact with an open flame.

When properly applied, the wood shall have a Class A rating. Flamex PF-2 contains polymers that maintain the flame retardancy for up to five years for exterior applications. Flamex PF-2 exterior fire retardant spray for exterior wood is non-toxic, non-combustible, non-carcinogenic, easy to apply, and contains no PDBE’s.

Laboratory tested as a leach resistant treatment for exterior wood.The durability of exterior fire performance for Flamex PF-2 exterior treated lumber has been confirmed to be maintained following exposure to the Standard Test Method for Evaluating Clear Water Repellent Coatings on Wood detailed in American Standard Test Method ASTM D5401 and is classified in accordance with ASTM E-84 Steiner Tunnel Test, meeting the requirements of US Standards for use in all exterior applications.

Proven stability from an exterior fire retardant spray

Flamex PF-2 formulation is non-hygroscopic which overcomes many of the disadvantages of conventional fire retardants. The processed materials can be used in situations where high humidity is a problem. Applying Flamex PF-2 on wood decking, fencing, framing, roof sheathing, wood shingles, etc., performs considerably better than conventional fire retardant systems in this respect.

Flamex PF-2 does not contribute to the corrosion rates of metals. 

Flamex PF-2 treated wood has a proven track record and can be used for all exterior or severe damp applications. Precious minutes can mean the difference between life or death.

Flamex PF-2  is a Class A rated flame retardant with a Flame Spread of 25 and Smoke Developed of 70 on wood. Since it penetrates and forms a molecular bond with the substrate, the life of the application shall be indefinite for most interior applications. For exterior applications, it is recommended that Flamex PF-2 be reapplied every 3 – 5 years depending on the amount of rainfall.

Additional information


Quart, Quart Case, Gallon, Gallon Case, 5 Gallon Pail, 55 Gallon Drum

3 reviews for Flamex PF-2 Exterior Fire Retardant Spray

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  1. decksbyjim

    We were skeptical at first about this product leaving a slippery surface but it didn’t. Will buy again for future installations

    1 out of 2 people found this helpful. Was this review helpful to you?
  2. Steve Garland

    Worked great on my rough sawn lumber.

    4 out of 6 people found this helpful. Was this review helpful to you?
  3. Ed Mason

    We performed a fire test on a small piece of wood after applying the PF-2 and we could not get it to burn. Also, very fast shipping!

    4 out of 6 people found this helpful. Was this review helpful to you?

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