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Spray foam insulation effectively lowers energy bills by defending a structure against external temperature changes and keeping stopping cooling or heating from leaking outside. 

It also reduces noise, prevents the growth of mold and mildew, and prevents insects and allergens from entering rooms.

Such insulation typically demands professional installation. The insulation contractor relies on a powered machine to spray the foam over a large area like an attic or wall stud. 

The foam then expands to fill every nook and cranny of the space. But what if only a small area requires insulation, such as a crack in the wall. What if you wanted to apply insulation around windows? Using a machine would be overkill.

  • Best Overall

  • Runner-Up

  • Best Budget

  • Best Value

  • Easy to clean 
  • Precise control 
  • Rugged and durable, 
  • Excellent performance

Spray foam insulation guns, also known as foam applicator guns, address this concern. They are lightweight, portable, and relatively compact to store. Because they only use pressurized cans of polyurethane insulation, they do not need a power source. 

They’re effective enough for professionals and easy enough to use that a do-it-yourselfer can handle them. In addition, such tools can also apply caulking.

If you’re looking for the best foam insulation gun for your project, check out this list.

Best Overall

Key Features:

  • Easy to clean
  • Precise Control
  • 12.99 x 7.87 x 1.57 inches
  • 12.8 ounces
  • Rugged & Durable

The Perciva Professional Foaming Gun gets the highest makes of its quick maintenance and precision.

Its per fluorocarbon-engineered plastic, and non-stick ABS construction is capped by a corrosion-resistant foam gun nozzle crafted from pure copper. This construction makes it rugged, durable, and easy to clean.

You can easily manage the position of the gun due to its light weight and comfortable ergonomic handle, which is coated with a non-slip surface.

You can precisely control the amount of foam that you want to use because of the thread design. Turning the rotary valve at the rear of the gun adjusts the flow valve from fully closed to open.

You minimize the mess and save money on foam by discharging only the amount you need exactly where you want it to go. This makes it ideal for sealing the smallest spaces, filling in spaces around drain pipes, sealing cracks in plaster, and installing expanding foam for windows.

Runner Up

Key Features:

  • PTFE coated, stainless steel canister adaptor
  • Adjustable foam output knob
  • Less foam waste when compared to foam sealants with straw dispensers.
  • 11.1 ounces
  • 13 x 1.88 x 8 inches

As a runner-up, the Foamnseal FNS 500 Polyurethane Foam Dispensing Gun justifies its greater price with the higher-quality and thicker-gauge materials used in its construction. 

Teflon™ (PTFE) coats the gun body, gun barrel, canister adapter basket and the internal needle rod, which is forged from stainless steel. The coating increases durability and reduces friction, encouraging the foam to flow more freely.

The stainless-steel canister adapter fits any single-component polyurethane foam can that use a universal screw-on threaded top. Examples include Great Stuff Pro™, Touch ‘n Foam™, Touch ‘n Seal™, DAP Draftstop™, IPF, Hilti™, Fomo Handi-Foam™, Owens Corning ProPink™, Tytan™, Todol Pur™, and Versi-Tite™.

It will not fit foam cans that dispense from a screw-on plastic straw.

You can adjust the size of the form discharge from 1/8 to 3 inches using the adjustable foam bead control. For hard to reach areas, plastic straw extenders easily attached to the barbed dispenser trip. A foam shut-off feature and the no post-dispensing foam drip prevent waste.

Best Budget

Key Features:

  • Ergonomic Design
  • The maximum output pressure: 8 MPa
  • 12.80 x 9.25 x 2.17 inches
  • 1.9 ounces
  • Spray width 3 mm

If your project is on a tight budget, the SocsPark Needn’t Clean Foam Gun saves you money in two ways. 

It boasts a low purchase price and does not require a separate cleaning solution. Instead, to clean the gun after use, all you have to do is rotate the valve and push out any remaining foam. 

Your device is warrantied for one year against any quality problems. If any issues happen in that time, you can get a refund or a replacement.

You can precisely adjust the flow of foam and the spray distance using the control knob and spring trigger. The copper tip allows a smooth flow. You save money even further by avoiding wasted material. For added durability and easy cleaning, the components are coated in Teflon™.

The ergonomic handle, which is made from ABS plastic, maximizes comfort, especially when you use the gun for long periods.

Additional Options

If you want prefer more options beyond the top three recommendations, take a look at the following list.

Key Features:

  • Lightweight, high-strength aluminum body with a metal trigger
  • Flow-control mechanism that dispenses beads from 1/8 inch to 3 inch
  • 13.50 x 8.50 x 2.50 inches
  • 1 pounds

If you depend on Great Stuff Pro products for your insulation jobs, you can use the Great Stuff Pro 14 Foam Dispensing Gun. It is specially designed to work with the manufacturer’s line of home spray foam cans. 

A tight seal between the can and the gun prevents air and moisture from intruding. You can then keep the gun securely attached to the top of the can and conveniently reuse it for up to a month. When you remove the can, clean the gun to make it last longer.

To improve durability and minimize weight, the aluminum body features a metal trigger. The non-stick coating on the can adapter and needle improves no-drip dispensing and eases restarting.

Adjusting the large flow-control knob uses a secured back-screw system to discharge beads sized from 1/8 to 3 inches. You gain pinpoint precision while being able to reach previously inaccessible areas.

Key Features:

  • Durable
  • Very easy to use
  • 1.6 pounds
  • 32 x 8 x 2.5 inches
  • Great fit for pro cans

A two-foot-long nozzle distinguishes the AWF Pro 1200 PTFE Foam Gun from the rest of the pack. The size lets you apply foam with less stress an strain even in areas that are hard to reach, such as under the floor or in vehicle bodies. 

When you need to reach even deeper, barbed extender tips let you attach straws or nozzles. Because this gun is specifically designed for professionals, it only works with professionally sized and not retail-sized cans.

Making foam application easier are the trigger fittings that ensure less play with the needle and trigger action that is far smoother and less tight than other brands. To encourage the cleaning that promotes many years of use, Teflon coats the adapter basket, ball valve, and dispensing needle.

Otherwise, when you are done, you close the gun but leave the can on.

Key Features:

  • Corrosion and wear resistant
  • Ideal for filling, sealing and insulating small gaps
  • Ergonomic design
  • 13.5 x 5.5 x 2 inches
  • 12.8 ounces

CE (Conformitè Europëenne) Certification means that a product meets the stringent directives of the European Union for performance and safety. The only device on this list with that designation is the the Picowe Foaming Gun.

Its solid aluminum construction makes it lightweight, durable, corrosion-free and wear-resistant

Measuring only 12.6 inches long makes this relatively compact gun is easier to maneuver in tight quarters. Reducer tips allow for even smaller beads. The tool is particular suited for sealing, filling, or insulating, the small gaps around bathtubs, toilets, windows, and balcony doors.

Your hand fits comfortably around the ergonomic handle that is sized at 3.74 x 1.97 inches. The spring trigger accurately delivers a controlled flow where you want it. No post-dispensing foam drip equals less wasted foam.

Be sure to clean the gun regularly after use because it can clog.

Key Features:

  • Easy to clean - Teflon Material
  • Allows expanding foam to be applied quickly and with precision
  • Ergonomic design
  • 13.6 ounces
  • 0.04 x 0.04 x 0.04 inches

The MANGZ Hand Foam Caulking Gun offers a simple and practical way of applying foam or caulk. 

Perfluorocarbon carbon ensures durability while the Teflon coating on the canister adaptor, check valve, needle, and metal body makes the gun easy to clean after use, which maximizes its lifespan.

The threads on the inlet valve facilitate loading and unloading while preventing waste and leaks. You can adjust how much foam to apply using the control knob and spring trigger. The rubber handle is easy to grip and comfortable to use for extended periods.

If you have any issues with the product, contact the manufacturer who promises to give you a satisfactory solution.

Key Features:

  • Great value
  • 2 Great Stuff Pro Gaps and Cracks 24oz Cans,
  • 1 AWF PRO Foam Dispenser Gun,
  • 2 Plastic Nozzles, 2 Plastic Straws ,
  • 1 Great Stuff Pro Cleaner Can,
  • 1 Pair of Nitrile Gloves

If you have plenty of insulating jobs to do, the AWF PRO Gaps and Cracks Kit puts all that you need to get the work done in one package. The most expensive product on this list rewards you with the most value because of all its contents:

  • 1 AWF PRO Foam Dispenser Gun. The price of the kits varies according to the gun that you choose but all AWF Pro Foam Guns feature high-quality manufacturing for effective foam application, non-stick coatings for easy cleaning, and a handy control knob for adjusting the size of the foam bead.

  • 12 24-ounce cans of Great Stuff Pro Gaps & Cracks Foam Sealant, which expands to form water-resistant and airtight seals up to 3 inches thick on wood, masonry, glass, metal, and most plastics.

  • 2 12-ounce cans of Great Stuff Pro Gun Cleaner for removing any uncured foam residue from flushing the gun nozzle of any uncured foam.

What to Do Next

Before you decide on which spray foam insulation gun to buy, think about how often you plan on using it. Are you content using one type of foam product or do you want the flexibility to use products from multiple manufacturers?

Do you need it for just one project around the house or plan to use it constantly for professional jobs?

Then decide what features are important to you and what budget you have. You can then choose the best gun to work with your needs.


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