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

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

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

2. DA71010 KLENK TOOLS Ergonomic Dual Duct / Insulation Knife

• 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
• Stainless steel, 3mm blade, serrated on one edge and smooth on the other

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

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

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

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

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

• Cushion-grip handle for comfort
• 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
• Cuts duct board and flexible duct
• Puncture resistant nylon sheath with belt loop
• Double-edged knife-regular and serrated

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

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

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

• 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

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

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

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

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

• Durable plastic handle.
• High carbon spring steel
• 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"