4.8 stars | Trusted by 5,000+ DIYers

R-Value 7.4

240 sq. ft.

DIY-Friendly Kit

AMPTERN SPRAY FOAM INSULATION KIT

Fill Every Gap, Secure Every Build

$199.98 $299.99 SAVE 33%

DIY your next Insulation project WITHOUT hiring a contractor
Kit includes everything to get the job done yourself in a few hours
Perfect for sheds, barns, attics, & garages (and more!)

Fast Shipping

60-Day Guarantee

30-Day Money Back Guarantee

That's how confident we are in your results. But if you're not thrilled, send it back and we'll refund your purchase.

1-Year Warranty
Free Shipping
American Owned

Beyond keeping temperatures steady, this foam softens traffic hum coming through exterior wall gaps. The reusable spray gun means I can store leftover tanks for future touch-up work around doors and windows.

Judith Baldwin July 16, 2026

Verified Purchase

Others

Easy to Use Application

Install on Your Shedule

No Contructor Costs

Quick and Easy Installation

Feature

Value

Thermal Conductivity

0.039 W/m·K

R-Value

7.40/2 Inch

Recommended Spray Thickness

2 inches (optimal for maximum R-Value)

Coverage

per 12 cans

~240 sq. ft. at 1" thickness

Full Cure Time

Approximately 6 hours

Recommended Application Temperature

41–86°F (5–30°C)

Common Application Areas:Garages、Basements、Attics、Ceilings & Walls、Vans, Cabins, and Hunting Blinds

4.8 stars | Trusted by 5,000+ DIYers

AMPTERN™ Spray Foaminsulation Kit

Get It By

High R-Value

Air Sealing

Draft Blocking

High R-Value

Air Sealing

Draft Blocking

High R-Value

Air Sealing

Draft Blocking

High R-Value

Air Sealing

Draft Blocking

NEW: AMPTERN™ Is Now Fire-Rated(Class A)

Class A Fire Rated

Meets ASTM E84 standards with a flame spread index of 0 - the highest fire safety classification available.

Zero Flame Spread

Fire can't travel across the surface of AMPTERN™ — the lowest score the test can produce.

Built for Code Compliance

Recognized by the International Building Code for residential and commercial applications — contractors and inspectors approve it.

Professional-Grade Spray Foam Insulation Kit

Everything you need toair-seal and insulateyour space correctly without contractor costs or complicated equipment.

What's included in the Spray Foam Insulation Kit? +

Each kit contains everything you need for a complete insulation job:

12× Spray Foam Insulation can (31.7oz / 900g)
1× Solvent-Based Gun Cleaner (14.1oz / 400g)
1× Professional Spray Gun
1×Protective Gloves
1×Fan Spray Nozzle
1×Cone Spray Nozzle
1×Extension nozzle
1×Protective Coverall
1×Safety Goggles
12×Disposable Foam Straw

Will this actually make my garage more comfortable? +

Yes — most homeowners report a 5–10°F improvement after installation. The spray foam seals air leaks and helps keep heat out in summer and warmth in during winter.

Will AMPTERN™ peel off over time? +

No. When applied to a clean, properly prepared surface, AMPTERN™ foam cures into a rigid, permanent bond on wood, concrete, metal, and drywall.

How do I take it? +

To place an order, simply browse our products, add items to your cart, and proceed to checkout. You can review your order before finalizing your purchase.

How long does AMPTERN™ last? +

After curing, the spray foam remains durable for decades without sagging or breaking down

Can the foam be cut, sanded, or shaped after curing? +

Yes. Once fully cured, the foam can be trimmed with a serrated knife, sanded, or shaped to a smooth finish. For closed-cell foam, a coarse rasp or grinder works best.

How does the foam gun cleaner work? +

Spray it onto uncured (fresh) PU foam, wait a moment, then wipe. It dissolves wet foam off your gun, surfaces, and tools. Use it after every job to keep the gun in top condition.

Can I reuse the foam gun for future projects? +

Yes. With proper cleaning between uses, the foam gun lasts for many cans and projects. Some users keep the gun threaded onto a partial can stored in a cool place — the foam stays usable for up to 30 days.

WHY TRUST US

30-Day Money-Back Guarantee

If you’re not satisfied within 30 days, we’ll make it right with a full refund.

1 Year Warranty

We've got your back

24/7 Friendly Support

Real Humans. Real Help.

Fill Every Gap, Secure Every Build

95%

Reduced Air Drafts

Seals Air Leaks Around Doors, Walls & Rim Joists

92%

Superior Thermal Control

Year-Round Comfort

93%

Easy DIY Installation

Ready to Start Right Out of the Box

97%

Highly Recommend AMPTERN

Professional Results, No Contractor Required

Storage Tanks
Round Surfaces
Doors
Metal Garages
Sarden Sheds
Balconies
Loggias
Car Bodies & Trailers
Nindow Slopes
Jneven Surfaces
Storage Tanks
Round Surfaces
Doors
Metal Garages
Sarden Sheds
Balconies
Loggias
Car Bodies & Trailers
Nindow Slopes
Jneven Surfaces
Storage Tanks
Round Surfaces
Doors
Metal Garages
Sarden Sheds
Balconies
Loggias
Car Bodies & Trailers
Nindow Slopes
Jneven Surfaces
Storage Tanks
Round Surfaces
Doors
Metal Garages
Sarden Sheds
Balconies
Loggias
Car Bodies & Trailers
Nindow Slopes
Jneven Surfaces
Storage Tanks
Round Surfaces
Doors
Metal Garages
Sarden Sheds
Balconies
Loggias
Car Bodies & Trailers
Nindow Slopes
Jneven Surfaces

SPRAY FOAM INSULATION

Follow these simple steps to get started

Surface Prep

Clean, dry, and lightly mist the surface for better adhesion.

Adjust Spray Gun

Fit nozzle, adjust spray direction, and close flow control knob.

Shake Canister

Shake the foam can thoroughly for 30–60 seconds.

Attach Canister

Remove protective cover and screw canister onto the spray gun.

Check Connection

Ensure the can and spray gun are fully locked and connected.

Open & Fine-Tune

Flip the yellow valve switch and adjust to proper flow rate.

Test & Apply

Test on cardboard first, then spray at a distance of 10–12 inches.