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You are here: Home / Reviews / Best Knife For Cutting Insulation

Best Knife For Cutting Insulation

November 8, 2022 by Editorial Team

When you’re trying to minimize energy costs by sealing up every drafty crack and crevice in your home, it can be hard to know where to start. Sure, you could just cover up the gaps with a layer of caulk and call it a day, but it takes more than just a tube of sealant to make a chilly house cozy. You’ll have to be diligent about filling in the gaps by caulking, but that’s only a small part of the job.

To make sure you’re filling in all the gaps, you should have a knife on hand that’s specifically designed for insulating. But before you start stabbing at your fiberglass batts, it’s a good idea to know what to look for when shopping for a knife designed to cut insulation.

Read on to find the best knife for cutting insulation.

# Preview Product Price
1 Mercer Culinary M23408 Millennia Black Handle, 8-Inch Wavy Edge, Utility Knife Mercer Culinary M23408 Millennia Black Handle, 8-Inch Wavy Edge, Utility Knife $19.00 Buy on Amazon
2 X-Acto No 1 Precision Knife | Z-Series, Craft Knife, with Safety Cap, #11 Fine Point Blade, Easy-Change Blade System X-Acto No 1 Precision Knife | Z-Series, Craft Knife, with Safety Cap, #11 Fine Point Blade, Easy-Change Blade System $5.40 Buy on Amazon
3 Mercer Culinary Millennia Colors 6-Inch Produce Knife, Green Mercer Culinary Millennia Colors 6-Inch Produce Knife, Green $17.00 Buy on Amazon
4 Fiskars Heavy Duty Die Cast, Exacto, 8 Inch, Precision Knife for Crafts, Multi Use Blade with Protective Cover, Steel Fiskars Heavy Duty Die Cast, Exacto, 8 Inch, Precision Knife for Crafts, Multi Use Blade with Protective Cover, Steel $5.99 Buy on Amazon
5 Mercer Culinary M23530 Renaissance, 10-Inch Chef's Knife Mercer Culinary M23530 Renaissance, 10-Inch Chef’s Knife $61.00 Buy on Amazon
6 OLFA 18mm Heavy-Duty Utility Knife (L-1) - Multi-Purpose Custom Cutting Depth Utility Knife w/ Ergonomic Grip Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade OLFA 18mm Heavy-Duty Utility Knife (L-1) – Multi-Purpose Custom Cutting Depth Utility Knife w/ Ergonomic Grip Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade $10.10 Buy on Amazon
7 Mercer Culinary Ultimate White, 11 Inch Slicer Wavy Edge Mercer Culinary Ultimate White, 11 Inch Slicer Wavy Edge $14.00 Buy on Amazon
8 Hyde Tools 45730 Plastic Cutting Tool Hyde Tools 45730 Plastic Cutting Tool $7.96 Buy on Amazon
9 OLFA 5006 H-1 25mm Rubber Inset Grip EHD Utility Knife OLFA 5006 H-1 25mm Rubber Inset Grip EHD Utility Knife $13.40 Buy on Amazon
10 Dexter WS-1 Knife Scabbard Up To 9-Inch Stainless Steel Dexter WS-1 Knife Scabbard Up To 9-Inch Stainless Steel $17.26 Buy on Amazon

Table of Contents

  • Our Editor’s Best Knife For Cutting Insulation Reviews
    • Mercer Culinary M23408 Millennia Black Handle, 8-Inch Wavy Edge, Utility Knife
      • Key Features:
    • X-Acto No 1 Precision Knife | Z-Series, Craft Knife, with Safety Cap, #11 Fine Point Blade, Easy-Change Blade System
      • Key Features:
    • Mercer Culinary Millennia Colors 6-Inch Produce Knife, Green
      • Key Features:
    • Fiskars Heavy Duty Die Cast, Exacto, 8 Inch, Precision Knife for Crafts, Multi Use Blade with Protective Cover, Steel
      • Key Features:
    • Mercer Culinary M23530 Renaissance, 10-Inch Chef’s Knife
      • Key Features:
    • OLFA 18mm Heavy-Duty Utility Knife (L-1) – Multi-Purpose Custom Cutting Depth Utility Knife w/ Ergonomic Grip Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade
      • Key Features:
    • Mercer Culinary Ultimate White, 11 Inch Slicer Wavy Edge
      • Key Features:
    • Hyde Tools 45730 Plastic Cutting Tool
      • Key Features:
    • OLFA 5006 H-1 25mm Rubber Inset Grip EHD Utility Knife
      • Key Features:
    • Dexter WS-1 Knife Scabbard Up To 9-Inch Stainless Steel
      • Key Features:
  • Best Knife For Cutting Insulation Buying Guide
  • Knife For Cutting Insulation Faqs
    • What is the best knife for cutting insulation?
    • What are the different types of insulation knives?
    • What are the features of a good insulation knife?
    • How do you choose the right knife for cutting insulation?
    • What are the safety concerns when using a knife to cut insulation?
    • Conclusion

Our Editor’s Best Knife For Cutting Insulation Reviews


Mercer Culinary M23408 Millennia Black Handle, 8-Inch Wavy Edge, Utility Knife

 Mercer Culinary M23408 Millennia Black Handle, 8-Inch Wavy Edge, Utility Knife

Key Features:

  • This knife has an ergonomic handle for comfort and durability. The blade is made of stainless steel and is serrated for easy cutting.

  • This knife is ideal for cutting insulation because it has textured finger points that provide slip resistance, grip, and safety. The protective finger guard helps to prevent your fingers from getting cut while you are using the knife.

  • This knife is made for cutting insulation and has a sharp blade that is easy to clean.

  • This knife is made with high-quality Japanese steel, which makes it easy to keep the blade sharp. It is also designed to cut through insulation quickly and easily.

  • This knife is made from a high-carbon Japanese steel that is resistant to staining. It is a one-piece knife, meaning that the blade and handle are all one piece of steel. This makes the knife extremely durable and able to withstand a lot of wear and tear.

$19.00 Buy on Amazon


X-Acto No 1 Precision Knife | Z-Series, Craft Knife, with Safety Cap, #11 Fine Point Blade, Easy-Change Blade System

 X-Acto No 1 Precision Knife | Z-Series, Craft Knife, with Safety Cap, #11 Fine Point Blade, Easy-Change Blade System

Key Features:

  • This knife is designed for making precise cuts in insulation material. It has a thin, sharp blade that can easily cut through insulation without tearing it.

  • This knife has a sharp, durable blade that is coated with zirconium nitride. This makes it ideal for cutting insulation, as it will not dull quickly and will resist corrosion.

  • This knife is perfect for cutting insulation because it is lightweight and easy to maneuver. The aluminum handle makes it easy to grip and the blade is sharp enough to quickly and easily cut through insulation.

  • This knife is ideal for cutting paper, fabric, thin metal, and plastic. It is easy to use and provides a clean, precise cut.

  • This knife is designed for cutting insulation and has a safety cap for storage and portability. The zirconium nitride coating gives it durability.

$5.40 Buy on Amazon


Mercer Culinary Millennia Colors 6-Inch Produce Knife, Green

 Mercer Culinary Millennia Colors 6-Inch Produce Knife, Green

Key Features:

  • This knife is made with high-carbon Japanese steel, which is known for its durability and sharpness. The one-piece construction makes it easy to keep the edge in good condition, and it should last a long time before needing to be replaced.

  • This knife is designed to be durable and comfortable to grip, with a textured handle to prevent slipping. The handle is also color-coded green, making it easy to identify as a fruit and vegetable knife.

  • The knife is designed for cutting fruits and vegetables, and would be ideal for slicing onions, celery, cucumbers, and more.

  • This knife is designed for cutting insulation and is easy to care for. To maximize the performance and longevity of the knife, carefully wash it by hand after each use with warm water and mild soap. Rinse and dry completely with a soft towel. Do not place in dishwasher or submerge for long periods of time.

  • The Mercer Culinary Millennia Series is a high-quality knife designed for cutting insulation. It features a sharp, durable blade and a comfortable, ergonomic handle.

$17.00 Buy on Amazon


Fiskars Heavy Duty Die Cast, Exacto, 8 Inch, Precision Knife for Crafts, Multi Use Blade with Protective Cover, Steel

 Fiskars Heavy Duty Die Cast, Exacto, 8 Inch, Precision Knife for Crafts, Multi Use Blade with Protective Cover, Steel

Key Features:

  • This knife has a sharp, precise blade that is ideal for cutting a wide variety of materials, including paper, cardstock, thin plastic, photos, and canvas.

  • The knife has a soft grip that makes it easy to control, and the blade is designed to cut through insulation easily.

  • This is a knife that includes a easily replaceable #11 blade and a blade cap to protect the knife when not in use. This is a great knife for cutting insulation for a shopper.

  • This is a knife for cutting insulation that is compatible with standard blades, including #10, #11, #16, #17. This knife will help you master any project.

  • This knife has an overall length of 8 inches and a lifetime warranty. It is designed for cutting insulation and has a sharp blade that can easily cut through material.

$5.99 Buy on Amazon


Mercer Culinary M23530 Renaissance, 10-Inch Chef’s Knife

 Mercer Culinary M23530 Renaissance, 10-Inch Chef's Knife

Key Features:

  • This knife is made with high-quality construction and is designed to last long and cut insulation well. The German steel is precision-forged to make sure it is up for the task.

  • This knife is designed to be comfortable to grip and easy to use while cutting insulation. The triple riveted construction is designed to be durable, and the ergonomic handle is both tough and lightweight.

  • The knife is made of stainless steel and has a serrated edge. It is comfortable to grip and has a finger guard for safety.

  • This knife is designed for easy care in order to prolong its usefulness. To clean the knife, wash it by hand after each use with warm water and mild soap. Rinse the knife and dry it completely with a soft towel. Do not place the knife in the dishwasher or submerge it for long periods of time.

  • The MERCER CULINARY RENAISSANCE SERIES knife is designed for cutting insulation. It has a combination of extraordinary fit, form and function. This knife works for professional use or the home cooking enthusiast.

$61.00 Buy on Amazon


OLFA 18mm Heavy-Duty Utility Knife (L-1) – Multi-Purpose Custom Cutting Depth Utility Knife w/ Ergonomic Grip Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade

 OLFA 18mm Heavy-Duty Utility Knife (L-1) - Multi-Purpose Custom Cutting Depth Utility Knife w/ Ergonomic Grip Handle & Snap-Off Blade, Replacement Blades: Any OLFA 18mm Blade

Key Features:

  • This knife has an 18mm blade that is razor sharp and made from Japanese tool steel for unmatched sharpness and edge retention. The blade has 8 razor-sharp snap-off segments, making it great for industrial or construction applications.

  • This knife has a sturdy handle for extra leverage and a keychain/lanyard hole for tethering. The blade is made of stainless steel and is firmly in place for safe operation.

  • This knife has a ratchet-based locking system that allows for custom cutting depths, as well as a wheel locking mechanism that allows for unlimited positions when securing the blade in place. This is a great knife for cutting insulation, as it is designed with safety in mind.

  • The knife is made for cutting insulation and has a heavy-duty design. It is also accurate for cuts through tough materials like drywall, roofing, flooring, rubber, and gasket materials.

  • The OLFA Standard is a knife for cutting insulation that is durable and of excellent quality. The blades are 18mm and will provide optimal results.

$10.10 Buy on Amazon


Mercer Culinary Ultimate White, 11 Inch Slicer Wavy Edge

 Mercer Culinary Ultimate White, 11 Inch Slicer Wavy Edge

Key Features:

  • This is a high-quality knife that is perfect for cutting insulation. It is made with high-carbon Japanese steel for easy edge maintenance and a razor sharp blade that lasts.

  • This knife is designed to be comfortable and safe to use while cutting insulation. The ergonomic handles and textured finger points provide a non-slip grip, and the knife is built to be durable.

  • The knife is serrated and has a sharp point. It is designed for cutting thin slices of meat.

  • The knife is made to cut insulation and has a serrated edge. It is easy to care for, and should be washed by hand after each use.

  • The Mercer Culinary Ultimate White Series is a knife designed specifically for cutting insulation. It is made from high quality materials and is designed to be durable and easy to use.

$14.00 Buy on Amazon


Hyde Tools 45730 Plastic Cutting Tool

 Hyde Tools 45730 Plastic Cutting Tool

Key Features:

  • This is a paint roller for cutting insulation. It is made of durable materials and is easy to use. It will help you cut insulation quickly and easily.

  • This knife has a plastic hand grip for cutting insulation. It is comfortable to hold and has a sharp blade that will make quick work of cutting through insulation.

  • This knife has a super sharp steel blade that is perfect for cutting insulation. The blade is also serrated, making it easy to get a clean, precise cut. The handle is comfortable to hold and has a finger guard for safety.

  • The Hyde Tools knife is a great knife for cutting insulation. It is made of high quality materials and is very sharp, making it perfect for cutting through insulation quickly and easily.

$7.96 Buy on Amazon


OLFA 5006 H-1 25mm Rubber Inset Grip EHD Utility Knife

 OLFA 5006 H-1 25mm Rubber Inset Grip EHD Utility Knife

Key Features:

  • This knife has a 25mm blade that is razor sharp and made from Japanese tool steel for unmatched sharpness and edge retention. The blade has 7 razor-sharp snap-off segments, making it great for industrial or construction applications.

  • This knife has a sturdy plastic handle that is made from high-impact ABS plastic. The handle is symmetrical and has an anti-slip rubber inset for additional grip. The stainless-steel channel keeps the blade firmly in place for safe operation.

  • This is a knife for cutting insulation with a ratchet-based locking system that provides custom cutting depths. The blade slider has a wheel locking mechanism for unlimited positions when securing the blade in place.

  • This knife is designed for cutting through tough materials like nylon, rope, laminates, leather, rubber, and gasket materials. It has a retractable blade for safety and a comfortable grip.

  • This is a utility knife with a 25mm blade designed for cutting insulation. It is made by OLFA, the original inventor of the Snap-Off Knife, and is known for its quality and durability.

$13.40 Buy on Amazon


Dexter WS-1 Knife Scabbard Up To 9-Inch Stainless Steel

 Dexter WS-1 Knife Scabbard Up To 9-Inch Stainless Steel

Key Features:

  • This knife has a hard plastic sheath and is designed for cutting insulation. It is made by Dexter and has a model number of WS-1.

  • This knife has a 2-inch nylon belt loop that can be used for cutting insulation. The blade is made of stainless steel and is sharpened on both sides. The handle is made of plastic and is comfortable to grip.

  • This knife has drainage holes in the blade to allow water to drain away quickly, making it ideal for cutting insulation around drainage pipes. The blade is also serrated to make cutting through tough materials easier.

  • This knife is for cutting insulation and is made in the USA. It is made of durable materials and is designed to last.

$17.26 Buy on Amazon


Best Knife For Cutting Insulation Buying Guide

Before choosing the best knife for cutting insulation you should consider following options:

1. Safety First: Insulation knives are intended for use in cutting, scoring, and stripping insulation, but this does not mean that you should use them however you please.

In fact, you should adhere to all safety guidelines provided with your knife, whether it comes with a manual or not. This way, you will avoid any injuries while working with your knife.

2. The Right Knife: Not all knives are made the same, so you should definitely read the labels on your chosen knife to make sure that it is the right one for your needs.

You should also check the length of the blade, whether it has a hook or notch for pulling cut materials, the thickness of the handle, and the overall weight of the knife.

These factors will determine how easily you can use your knife for the tasks for which you intend it.

3. Check for Durability: Although this should be a given, a lot of people fail to check the durability of their chosen knife.

If you fail to check the material of your knife, you are essentially making a gamble on whether or not it will stand up to the job.

Some knives are made of a single piece of steel, while others are made of multiple parts. The latter is typically stronger, but the former is easier to use.

Also, check the coating on your knife, as most insulation knives are coated with a rubber or vinyl coating to make them easier to hold. This coating can wear down over time, so you should plan on replacing your knife after a while.


Knife For Cutting Insulation Faqs

What is the best knife for cutting insulation?

A knife with a sharp, serrated blade is the best type of knife for cutting insulation.

What are the different types of insulation knives?

The most common types of insulation knives are the straight knife, the offset knife, and the hook knife.

What are the features of a good insulation knife?

The features of a good insulation knife include a sharp blade, a comfortable grip, and a durable construction.

How do you choose the right knife for cutting insulation?

There is no definitive answer, but some factors to consider include the type of insulation, the thickness of the insulation, and the desired cut.

What are the safety concerns when using a knife to cut insulation?

When using a knife to cut insulation, the main safety concerns are avoiding contact with the blade and avoiding contact with any potential toxins or irritants that may be released from the insulation.


Conclusion

There are many great knife for cutting insulation on the market. Our list of the best knife for cutting insulation will help you save time researching and choosing the best one for you.

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