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Dow Froth Pak 650, Spray Foam Insulation Kit, Class A fire rated

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  • Froth Pak 650's contain A & B tanks and a hose kit.
  • Optional Protection Kit includes: Medium P95 Respirator, Tyvek Suit, 12 Pack Nitrile Gloves and Goggles
  • Great Stuff Gun Cleaner dissolves uncured 2 part foam
KTDW 65010
Same day shipping if ordered by 3 pm EST
$95.00 (Fixed shipping cost)

 Product Description

Dow Froth Pak 650 Class A fire rated spray foam insulation kits are complete portable two part polyurethane spray foam systems. FROTH-PAK™ polyurethane foam is a two-component, quick cure, closed cell foam that fills cavities, cracks and expansion joints for insulation and air sealing. Air infiltration accounts for 25%-40% of a home’s energy loss, FROTH-PAK™ stops that energy loss. FROTH-PAK™ Foam Insulation kits can be used to insulate stud wall cavities up to 2" thick, cold floors above unheated areas, crawl spaces, attic walls, and ceilings when covered with a code-approved barrier. The kit can be restarted and reused for up to 30 days after first startup. The Froth Pak 650 kit yields up to 650 board feet of foam.

The Froth Pak 650 kit yields up to 650 board feet of foam (One board foot = 12"x12"x1"), 1.75 foam density.

Froth Pak provides a R-6 rating per 1 inch of thickness


  • Part A Tank(60 pounds) - Isocyanate
  • Part B Tank(60 pounds)  - Polyol
  • 15 feet hose (or optional 30 feet hose)
  • INSTA-FLO Gun Dispenser & Hose Assembly
  • Cone Spray Anti-Crossover Nozzles (8 cone nozzles, 4 fan nozzles)
  • 1 Wrench (5/8")
  • 1 Petroleum Jelly Packet (5 g)
  • 1 Operation Instruction Manual

Dow Chemical has made enhancements to their industry leading formulation of FROTH-PAK™ Class A Insulation. As a direct result of these formulation enhancements, Froth Pak 620 became the Froth Pak 650. FROTH-PAK™ Class A Insulation now offers increased yield, improved adhesion and resistance to cold during transport and storage.

Chemical curing allows 2 part polyurethane foam to be dispensed, expand, and become tack free in seconds. Foam will skin over in 30 to 40 seconds. Reentry to spray area can be made in 1 hour without respirator.  Dow Froth Pak 650 is great for bigger jobs; yield is 650 board ft.


FROTH-PAK™ Foam Insulation Kits (U.S. only) come with a Class-A fire rating (flame spread index of 25 or less), FROTH-PAK™ Foam Insulation can be used in:

  • Stud wall cavities
  • Rim or band joists
  • Crawl space walls and ceilings
  • Attic ductwork
  • Plumbing wall pipe insulation and support

Please refer to your local building code or local inspector for proper application.

Use by Date? - No worries. We guarantee you the freshest product every time you order.

Need a different size kit? Check out Froth Pak disposable kits for smaller jobs or the Froth Pak refillable system when you need to go big. 

Need more than 1 kit? Quantity discounts automatically apply. Need even more? Please call us at 888-223-3050 for quantity discounts and delivery information.


Froth Pak spray foam kits are intended for professional use - Please follow all instrucitons and guidelines for use and application.

Personal Protection Equipment (PPE) should be used when applying Froth Pak foam kits.

Dow Personal Protection Equipment Recomendations

Dow Froth Pak Safe Handling Instructions

Don't have Personal Protection Gear? Take a look at our Personal Protection Kit.

For more info watch the Video:

Froth Pak Usage Recomendations

As with all chemical products proper preparation of the work area and application procedures should be followed to insure a safe and satisfactory job.

When spraying Froth Pak, the initial reaction of the 2 chemicals will generate heat. We recommend building up thickness in a series of layers to avoid excessive heat buildup. 

Proper ventilation of the work area should be followed. Please see Froth Pak Ventalation Guidelines.

Please make sure that both tanks are opened fully and that there are no restrictions in the feed lines. An improper mixture will cause "off ratio" foam. To see what this looks like check out our video "How to tell Good from Bad"

Froth Pak Handling and Disposal

Froth Pak Temperature Guidelines

Froth Pak Disposal Instructions

OSHA Work Rules

For contracters  and businesses OSHA has specific guidelines for applying spray foam. Please see the following for more information:

National Emphasis Program (NEP) for Occupational Exposure to Isocyanates

FAQ on OSHA'S NEP program


Additional charges may apply if shipping to a residence, extended service area, or business that does not have a loading dock.
This product is also available for Pick Up from our Freehold, NJ warehouse.

Questions? - Call us at 888-223-3050

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 Product Reviews

  1. Foam-Pak 620

    Posted by Ged on Oct 11th 2013

    Product was delivered 2 days after order was placed,exceptional. I used this to insulate a sub floor resting on a concrete base and theFoam-Pak 620 fullfilled this need. It was easy to use carfully following the instructions. I used up the entire contents in one go so cannot comment on storage and re-use. One down side is that it did no go as far as I expected. The 620 board feet (1.4 cu m)listed is theoretical in ideal lab conditions. I would like to know what the practical volume usage is.

  2. good product.

    Posted by Unknown on Oct 1st 2013

    had a small problem with the left hose at the sprayer that seeped some material out. wasn't a big deal though. product sprays and covers well. make sure they are warm like the instructions explain or inconsistent coverage. warmed mine up and worked great. once applied, this product is amazing, like most any spray foam.

  3. sprays beautifully

    Posted by Unknown on Aug 23rd 2013

    and besides that it is easy to use--you really have to plan what your doing so you don't have to change nozzles all the time

  4. Froth-Pak 620 review

    Posted by Unknown on Mar 15th 2013

    I was satisfied with how the Froth-Pak went on. I initially heated the tanks up to 80 degrees and kept them around 75. I was able to do just under 500 square feet. Most spots at an inch thick while other places thicker. I applied it in on my basement walls behind a studded wall. One thing I will do differntly next time is use the "spot" tip to apply the foam behind the studs (~3/4" space) first and then go back through and use the fan tip to fill the spaces between each stud.

  5. Posted by nnovboard.ru on Feb 23rd 2013

Condition: New In stock


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