Sealant Spray Foam Kit

Froth-Pak™ Sealant 120

  • Yields approximately 120 board feet1
  • Quick 30 second cure time
  • Typically used to fill areas up to 2” thick by 4” wide
  • Class-A fire rated
  • Provides an R-value of 6.2 Aged and 6.7 Initial
  • Product Details

    Froth-Pak™ Sealant 120 is the all-in-one, self-contained and easily portable kit for professional contractors to "picture frame” wall cavities and other small areas that require sealing quickly and efficiently. This two-component foam seals out moisture, dust, allergens, and pests while improving energy efficiency, and our newly reformulated product delivers a GWP reduction of over 99%. Our new Froth-Pak™ Sealant Spray Foam contains no ozone-depleting chemicals or HFCs while elevating the performance attributes you have come to expect.

  • Each kit includes:

    • 1 Part A Tank of Isocyanate
    • 1 Part B Tank of Polyol
    • 9 ft hose and INSTA-FLO Gun Dispenser & Hose Assembly
    • Cone Spray Anti-Crossover Nozzles (8 cone nozzles, 4 fan nozzles)
    • 1 Petroleum Jelly Packet (5 g)
    • 1 Operation Instruction Manual.

Required PPE

  • Protective clothing or impermeable coveralls, including long sleeves (no skin should be exposed)
  • Eye Protection, goggles or safety glasses
  • Respirator with organic vapor/P100 cartridge
  • Chemical-resistant gloves that are coated with nitrile, butyl rubber, neoprene or PVC
  • More Product Details

    Froth-Pak™ Sealant 120 is a Class A Fire Rated two-component, quick-cure polyurethane foam that can be used to "picture frame" cavities and to fill penetrations and cracks up to 2” thick by 4” wide. Froth-Pak™ Sealant 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™ Professional Spray Foam continues to bring innovation to the industry with products that helps make buildings and homes more sustainable. All Froth Pak™spray foams feature a blowing agent GWP reduction of more than 99% while maintaining the performance attributes professional contractors expect. In addition to the elimination of HFC blowing agents, the new formulation features improved curing time, improved closed cell content and a reduction in overspray via the Insta-Flo™ Dispenser. This means delivering unsurpassed performance and ease of use while maintaining Froth Pak Spray Foam’s commitments to sustainability.

    • A self-contained, portable kit with everything you need
    • No additional gas cylinder or electricity required.
    • Typically used to fill areas up to 2” thick by 4” wide
    • Includes our industry-leading nozzle system
    • Tack-free in 30 to 40 seconds
    • Bonds to wood, rigid foam, masonry, metal, drywall, and more.
    • Formulation and dispensing systems are patent-pending.
    • Can be used in “Picture framing” wall cavities and other small areas that require sealing
    • GreenCircle® Certified; LEED V4 Compliant; ICC listed.
    • Not for full coverage application
    • Reusable for 30 days
    • Has an R-value Aged of 6.2; Initial of 6.72
    • One-hour occupant re-entry with proper ventilation after dispensing.3
    • Quick 30 second cure time.
    • Contains no ozone-depleting chemicals or HFCs.
    • Blocks air infiltration and helps to meet air change per hour (ACH) code requirements and reduces building energy costs.
    • Reduces the potential for moisture, mold, mildew, allergens, and rot.

    1The theoretical yield has become an industry standard for identifying certain sizes of two-component kits. Theoretical yield calculations are performed in laboratory conditions, without taking into account the loss of blowing agent or the variations in application methods and types.

    2R-value per inch: ft²•h•°F/Btu; aged LTTR measured at 2-in. thick.

    3Find full ventilation guidelines in our Resource Center

    • 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.
  • Q.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™.

    Q.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.

    Q.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.

    Q.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)
    1.0"6.0 (when sprayed at 1 inch thick)
    2.0"12.2 (R5.6/inch when sprayed at 2 inches)

    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.


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