Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated
Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated

Fastcoat Insulation Spray Foam, Closed Cell Expanding Foam | Class A Fire Rated

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  Achieve exceptional insulation with the user-friendly FastCoat Fire-Rated Spray Foam. This high-performance, closed-cell hybrid formula delivers superior thermal and sound insulation with an impressive R-value of 5.66 per inch (thermal conductivity: 0.025 W/(m.K)). Ensuring maximum safety, FastCoat is certified Class A Fire Rated (ASTM E84), offering excellent fire and smoke spread resistance. Its outstanding adhesion properties make it suitable for a wide range of applications, including ceilings, walls, HVAC systems, ductwork, trailers, vans, and even pool areas. Easy to apply, this expanding foam can yield up to 20 board feet at a 1-inch thickness, making it an ideal choice for both DIY enthusiasts and professional contractors seeking reliable and efficient insulation.

FastCoat Calculator

You can calculate how many cans you need for insulation.
* One can of FastCoat covers 20 board feet with an R-value of 5.66 at 1-inch thickness.
Length (ft) Height (ft) Thickness (inch)
Area (sq.ft.) =
Required Cans =
R-value =
  • Closed Cell Hybrid Formula – Ensures durable and high-performance insulation with a dense structure.
  • Class-A Fire-Rated Spray Foam – Complies with industry first ASTM E84 standards for fire and smoke spread resistance, improving building safety.
  • Outstanding adhesion for most building materials.
  • Easy to apply uneven, hard-to-reach surfaces where it is very hard to use traditional insulation materials.
  • Excellent R-Value: 5.66 per inch and thermal insulation value 0.025 W/(m.K).
  • Does not allow the formation of thermal bridges.
  • Does not allow the formation of dew points.
  • Yield up to 20 board feet for 1-inch thickness from one can if applied from a distance of ~16 inches with normal application speed. 
  • Thanks to its dense structure, it stops water, air, bugs, etc.
  • Can be painted.
  • Color may vary.
  • Every can includes a precision spray foam nozzle for efficient application.
  • Application Temperature: 41°F (5 °C) to 86°F (30°C). 
  • Can Storage Temperature: min. 41°F (5°C) max. 86°F (30°C).
  • Temperature Resistance: -103°F (-75 °C) to 239°F (115°C).
  • The cans should be kept at room temperature for at least 12 hours before the application if cans are stored below/above storage temperature.

🚨 Application TIP: Make sure the spray gun and the adapter are fully seated. Otherwise, only gas can come out first and the foam cannot come out when there is no gas inside.

  • Structural elements of buildings, attics, crawl space, interior wall insulation, balcony, loggia, doors, window slopes, pipes, canals, and tank kind round surfaces, uneven and rough all surfaces.
  • Roofs, attics, facades, foundations, basements, floors, interior walls, inter-floor overlappings, interior partitions, ceilings, and cellars.
  • Car body and car trailers, boats, yachts, vessels, and all kinds of sea vehicles.
  • Excellent R-Value: 5.66 per inch and thermal insulation value 0.025 W/(m.K), Yield up to 20 board feet for 1-inch thickness if applied from a distance of ~16 inches with normal application speed.
  • A maximum of 1-inch thickness should be applied in a single batch.
  • If more than 1-inch thickness application is needed, a minimum of 30 minutes should have waited between each surface, and the surface should be sprayed with water before the next application.

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Customer Reviews

Based on 223 reviews
81%
(181)
14%
(31)
3%
(6)
0%
(1)
2%
(4)
96.4
85.3
J
Jerry

I like it & would be interested in 4 more cases if i could still get them for this price

T
Todd

Shipping was super fast , less than 24 hrs from order to my door !! Product is very easy to use , but definitely get more than you think you will need. Slight learning curve. Over all %100 satisfied.

A
Arturo

As advertised

123

Your Moments, Our Products

FAQs

20sq ft per can at 1" thick with an R-value of 5.66.

FastCoat is ASTM E84 Class A (sometimes called “Class 1”), meaning it achieved a Flame-Spread Index ≤ 25 and a Smoke-Developed Index ≤ 450 in third-party tunnel testing.

Yes. The ASTM E84 test is performed on fully cured samples, so the Class A rating applies to the product after installation and complete cure.

The International Residential Code (IRC) and International Building Code (IBC) accept ASTM E84 Class A materials for many wall, ceiling, and attic applications, provided all other code requirements (thickness, ignition barrier, thermal barrier) are met.

No. The Class A rating comes from the closed-cell chemistry and additives that limit flame spread and smoke—not the colorant itself.

Depending on the climate of the location you live in, the required R-value changes. For example, if you live in Zone 4 or 5, you will need a depth of 4-inches of this insulation installed in your 2X6 wall to reach R-20 with a clased-cell insulation that has an R-value of R-5 per inch of thickness. You can find R-value chart for the USA here.

Insulation Foam is measured in board feet. So a “20” kit will cover 20 sq. ft., 1-inch thickness.

It's closed-cell

Yes, it's flammable.

Temperature resistance is -103 F to 239 F.

The effective lifespan of Fastcoat Insulation Spray Foam is 25 years.

Yes, it's waterproof after appropriately cured.

You can be home after 12 hours of the application.

No, it doesn't.

After 6 hours.

Respirator, goggles, chemical-resistant gloves.

You can use it, but no need after the Fastcoat application.

R-Value is 5.66 per inch.

20 board feet at 1 inch thick of spray foam with an R-value of 5.66.

Yes, it works well for that. It can get into all the cracks and holes.

It is a medium to low density.

You can use it with spray foam gun. You'll also need spray foam gun cleaner or acetone to clean up any messes and prolong the applicator gun life.

Other spray foam guns may work with Kraken FastCoat, but for optimal performance, we recommend Kraken guns. For trusted products, including Kraken and compatible Stanley products, visit OneClickDIY.

No, it doesn't. Great stuff has there own special tip, and the directions with Kraken spray foam won't work.

Under a porch. it won't get wet

You can use it on the bottom side of the galvanized roof and shouldn’t expose it to sunlight.

Yes, it prevents heat. You can apply it to the bottom side of the gazebo. It would be better if you cover it with plywood, plasterboard, or similar products that keep it from the direct sunshine. You can paint it with black color if not possible to cover with the other materials.
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