Best Insulation Knife For Cutting Insulation In June 2025

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Here, we’ll review the top 10 Best Insulation Knife For Cutting Insulation on the market today. We’ll provide an overview of the pros and cons of each product. Read on for our selection of Best Insulation Knife For Cutting Insulation.

To help you in your search, we have completed this list of the Best Insulation Knife For Cutting Insulation.

Top Rated Best Insulation Knife For Cutting Insulation Of 2025

Rank Product Name Score
1
DA71000 KLENK TOOLS Dual Duct / Insulation Knife - Rosewood Handle
DA71000 KLENK TOOLS Dual Duct / Insulation Knife - Rosewood Handle
9.7
2
DA71010 KLENK TOOLS Ergonomic Dual Duct / Insulation Knife
DA71010 KLENK TOOLS Ergonomic Dual Duct / Insulation Knife
9.5
3
Fuller Tool 320-0100 Insulation Knife - Double Sided
Fuller Tool 320-0100 Insulation Knife - Double Sided
9.1
4
Bullet Tools 7 in. CenterFire Insulation Knife Blade (3pk) for cutting foam
Bullet Tools 7 in. CenterFire Insulation Knife Blade (3pk) for cutting foam
8.8
5
Knife, Serrated Stainless Steel Bladed Duct Knife for Flexible Duct and Duct Board
Knife, Serrated Stainless Steel Bladed Duct Knife for Flexible Duct and Duct Board
8.6
6
Milwaukee 48-22-1921 Smooth Blade Insulation Knife
Milwaukee 48-22-1921 Smooth Blade Insulation Knife
8.3
7
Milwaukee 48-22-1922 Serrated Blade Insulation Knife
Milwaukee 48-22-1922 Serrated Blade Insulation Knife
8.1
8
Grip-Rite Stone Wool Insulation Knife
Grip-Rite Stone Wool Insulation Knife
7.8
9
Bullet Tools 7 in. CenterFire Insulation Knife Blade for cutting foam and batt
Bullet Tools 7 in. CenterFire Insulation Knife Blade for cutting foam and batt
7.5
10
Everhard Long Cut Insulation Knife with 3-5/8" long blade MK46000
Everhard Long Cut Insulation Knife with 3-5/8" long blade MK46000
7.2

1. DA71000 KLENK TOOLS Dual Duct / Insulation Knife - Rosewood Handle

1
9.7/10 our score

  • Designed for the hvac contractor but great for all construction trade professionals
  • Beautiful rosewood handle with solid brass rivets.
  • A heavier and thicker blade than other duct knives.
  • Stainless steel, 3mm blade, serrated on one edge and smooth on the other
  • Slim, reinforced, ripstop nylon sheath included -- designed to hang from your belt.

2. DA71010 KLENK TOOLS Ergonomic Dual Duct / Insulation Knife

2
9.5/10 our score

  • Stainless steel, 3mm blade, serrated on one edge and smooth on the other
  • Longer, sharper and better other duct knives.
  • Slim, reinforced, ripstop nylon sheath included -- designed to hang from your belt.
  • Designed for the hvac contractor but great for all construction trade professionals

3. Fuller Tool 320-0100 Insulation Knife - Double Sided

3
9.1/10 our score

  • 11" stainless steel blade.
  • Composite grip for comfort
  • Backed by fuller's limited lifetime warranty
  • Specifically designed to cut mineral wool and other types of insulation
  • Quality you can depend on.

4. Bullet Tools 7 in. CenterFire Insulation Knife Blade (3pk) for cutting foam

4
8.8/10 our score

  • Long-lasting carbon steel blade outlasts most other blades
  • Easily cuts notches and squares around outlets, and circles in sheets
  • Flexible blade for quickly cutting expanded foam around windows
  • Non-serrated edge eliminates dust and debris
  • Handles hard to cut insulation like denim and rockwool

5. Knife, Serrated Stainless Steel Bladed Duct Knife for Flexible Duct and Duct Board

5
8.6/10 our score

  • Cushion-grip handle for comfort
  • Double-edged knife-regular and serrated
  • Cuts duct board and flexible duct
  • Puncture resistant nylon sheath with belt loop
  • Klein tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... since 1857

6. Milwaukee 48-22-1921 Smooth Blade Insulation Knife

6
8.3/10 our score

  • The product is easy to use and easy to handle
  • The product is highly durable
  • Smooth blade insulation knife

7. Milwaukee 48-22-1922 Serrated Blade Insulation Knife

7
8.1/10 our score

  • The product is easy to use and easy to handle
  • The product is highly durable
  • Serrated blade insulation knife

8. Grip-Rite Stone Wool Insulation Knife

8
7.8/10 our score

  • The recommended knife for cutting roxul stone wool insulation
  • The product is manufactured in taiwan
  • 420-grade stainless steel blade with serrated edge for superior cutting of insulation products

9. Bullet Tools 7 in. CenterFire Insulation Knife Blade for cutting foam and batt

9
7.5/10 our score

  • Handles hard to cut insulation like denim and rockwool
  • Flexible blade for quickly cutting expanded foam around windows
  • Easily cuts notches and squares around outlets, and circles in sheets
  • Non-serrated edge eliminates dust and debris
  • Long-lasting carbon steel blade outlasts most other blades

10. Everhard Long Cut Insulation Knife with 3-5/8" long blade MK46000

10
7.2/10 our score

  • Durable plastic handle.
  • Blade is longer than similar style knives. great for roofing iso board.
  • Consistent edge quality. sharp on all sides for stabbing and easy cutting.
  • Overall length: 7-1/2" - blade length 3-5/8"
  • High carbon spring steel

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