• Product Details

    Froth-Pak™ Insulation Spray Foam is a Class A Fire Rated two-component, quick-cure polyurethane foam that fills cavities, penetrations, and cracks in rim joists, roof wall junctures and around pipes and ducts up to 2” thick. Froth-Pak™ Insulation is a chemically cured foam designed to significantly reduce curing time. It dispenses, expands, and becomes tack-free in seconds, saving pros time on the Jobsite.

    Froth-Pak™ Insulation Spray Foam Kit 210 yields approximately 210 board feet. Each self-contained kit contains an ISO (A) cylinder, a Polyol (B) cylinder, Insta-Flo™ Dispensing Spray Gun, 6 cone spray nozzles, 4 fan spray nozzles, and a 9’ gun hose assembly.

    Froth-Pak™ Insulation Spray Foam Kit 650 yields approximately 650 board feet.

    • Expands quickly to fill larger gaps and penetrations greater than 2"
    • Provides a high level of insulating R-value on initial application
    • Reusable for 30 days
    • Energy Star Certified.
    • Complete and portable two-component, quick-cure polyurethane foam kit that fills cavities, penetrations, cracks, and expansion joints.
    • Anti-crossover nozzle and the ergonomic dispensing system help ensure consistent flow rate, on-ratio application, and complete dispensing of product.
    • Contains no ozone-depleting chemicals or HFCs.
    • Blocks air infiltration and helps to meet air change per hour (ACH) code requirements and reduce building energy costs.
    • Reduces the potential for moisture, mold, mildew, allergens, and rot.
    • One-hour occupant re-entry with proper ventilation after dispensing.
    • Quick 30 second cure time.
    • For uses in a wide range of interior and exterior industrial, commercial, institutional, and residential settings, including roof and wall junctures, wall and attic, crawlspaces and basements, electrical, mechanical, and plumbing penetrations in the building envelope.
    • Bonds to wood, rigid foam, masonry, metal, drywall, and more.
    • Formulation and dispensing systems are patent-pending.. 
    • GreenCircle® Certified; LEED V4 Compliant; ICC listed.
  • Q.

    Why did Froth-Pak™ change?


    With our customers and the environment at the center of everything we do, DuPont is committed to the transition to more sustainable buildings while ensuring our products continue to deliver the high level of performance our customers trust and expect. We’re committed to delivering solutions that address climate change, drive the circular economy, deliver safer solutions and help communities thrive.

    HFC-free Froth-Pak™ is a demonstration of our continued commitment to providing the market with products that address environmental challenges while meeting the needs of our customers. We’re committed to delivering better solutions that address climate change, drive the circular economy, deliver safer solutions and help communities thrive.


    Does the new Froth-Pak Formulation have the same performance as the legacy formulation?


    The newly enhanced, innovative solution delivers a global warming potential (GWP) reduction of more than 99% as compared to current formulations and contains no ozone-depleting chemicals or HFCs while enhancing the performance attributes professional contractors expect from Froth-Pak™. Froth-Pak™ Spray Foam now has improved curing time, reduced overspray with new patent-pending application nozzles, and further improved its closed cell content.


    Can we use the old nozzles with the updated Froth-Pak™ formulation?


    No, the older version of our nozzle design should not be used with the new, reformulated HFC-free Froth-Pak™. 


    Is the legacy formulation of Froth-Pak™ still available for purchase?


    No, in support of our sustainability goals, all Froth-Pak™ products will only be available for purchase in the new, low-GWP, HFC free formulation. 


    What “R” Values can be achieved with Froth-Pak™ Insulation and Sealant?


    For Froth-Pak™ Sealant the LTTR value (Long term thermal resistance) measurement at 1 inch thick is 5.3 ft²•h•°F/Btu (R value) per inch. When sprayed to 2 inches thick the LTTR value (Long term thermal resistance) measurement at 2 inch thick is 5.5 ft²•h•°F/Btu (R value) per inch which is R11.0 at 2 inches thick.

    For Froth-Pak™ Insulation (Aged 180 days @ 75°F):

    Thickness (inches)

    R-Value (ASTM C518, F.ft2.h/Btu)


    6.0 (when sprayed at 1 inch thick)


    12.2 (R5.6/inch when sprayed at 2 inches)


    • Froth-Pak™ Spray Foam Insulation comes in a variety of sizes to suit your needs.
    • The self-contained portable kits contain everything you need, with no additional gas cylinder or electricity required.
    • Avoid exposing cured foam to temperatures above 240°F.
    • Tubing inside the tank can become damaged if shaken too hard.
    • If applied outdoors, be sure to paint or cover foam to prevent discoloration and UV damage.
    • Always refer to the installation guide for safe usage and local building codes prior to application. 
    • For best results, the tank contents should be at 75°F (24°C) or warmer. Ambient and surface temperatures should be 65°F or above. 
    • The temperature indicator – not available on Froth-Pak™ 650 kits – on the side of the tank shows the temperature of the contents of the tank, not the ambient air temperature.
    • Froth-Pak™ Foam can be applied effectively in cooler air temperatures or on cooler work surfaces provided the kit contents are at least 75°F (24°C). (See user manual, Section 4.3 - Cold weather spray guidance)
    • If hoses are not already attached, use the wrench provided in the Gun / Hose Assembly Kit or your own 5/8” wrench to tighten the hose assemblies for both “A” and “B” valves until both are tight.
    • Apply petroleum jelly to the inside surfaces of the face of the gun
    • .Do not attempt to reuse the nozzle if the spray has stopped for more than 30 seconds (or more than 15 seconds for the FROTH-PAK™ High-Density product). Restart times are impacted by temperature. (See section 3.2 in user manual)
    • Do not reuse a cured or partially cured nozzle. This may cause foam to crossover in the gun, rendering it unusable.
    • If A:B ratio appears wrong, check face of the gun to ensure the ports are clear of cured material (you should be able to see the silver finish of the aluminum spool in the ports). Purge foam through gun for a few seconds without a nozzle. Replace nozzle and try again.
    • To prevent foam from running or dripping from substrate, spray thinner passes. The foam expands more than the previous formulation, so spray faster passes. Initial spray does not need to be as thick to result in the same desired final thickness.
    • Apply a flash-coat for optimal adhesion in suboptimal conditions (cool weather, difficult substrates). A fan nozzle is best used for this. Spray a very thin layer (~1/4” thick) on entire surface to be foamed. Allow the foam to become tack free (~1 minute). Then spray as usual to desired thickness.



When to Use

Attic Penetrations


Electrical Penetrations

HVAC Penetrations

Pipe and Plumbing Penetrations

Rim Joists

Sill Plate

Wall/Attic Penetrations



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