Best Putty Knife For Windows This Year – Hand Tools Reviews
Our winners of the Best Putty Knife For Windows this year are:
BEST OVERALL
Warner ProGrip Full Flex Putty Knife

- Stainless steel blade
- Ergonomic handle
- Full-flex blade
- Rust-resistant
- 1.5-inch blade width
Introduction
When it comes to maintaining your windows, a reliable putty knife can make all the difference. Whether you’re scraping off old paint, applying new putty, or getting rid of grime, the best putty knife for windows can help you get the job done efficiently and effectively. But with so many options available, how do you know which one is right for you?
In this comprehensive guide, we’ll walk you through everything you need to know about choosing the best putty knife for windows. From essential buying tips to frequently asked questions, we’ve got you covered. Plus, we’ll review some of the top-rated putty knives available on Amazon to help you make an informed decision.

Reviews & Comparisons
1. Warner ProGrip Full Flex Putty Knife
The Warner ProGrip Full Flex Putty Knife is designed for precision and comfort. Its full-flex blade ensures smooth application of putty and other materials.

Read Customer Reviews Here »
Why we like it
We like the Warner ProGrip Full Flex Putty Knife for its ergonomic handle and high-quality stainless steel blade, which makes it both durable and easy to use.
Features
- Stainless steel blade
- Ergonomic handle
- Full-flex blade
- Rust-resistant
- 1.5-inch blade width
Pros
- Durable material
- Comfortable grip
- Flexible blade
- Rust-resistant
- Great for detailed work
Cons
- Not suitable for heavy scraping
- Blade may be too flexible for some tasks
- Higher price point
- Limited blade width options
- Handle may be too large for small hands
Our Verdict
The Warner ProGrip Full Flex Putty Knife is an excellent choice for those looking for a durable and flexible tool for detailed window work. Its ergonomic handle ensures comfort during extended use.
2. Red Devil 4718 3-Inch Flex Putty Knife
The Red Devil 4718 3-Inch Flex Putty Knife is perfect for both professional and DIY users. Its flexible blade makes it ideal for a variety of tasks.

Read Customer Reviews Here »
Why we like it
We like the Red Devil 4718 for its versatility and affordable price. The 3-inch blade is perfect for covering larger areas while still being easy to control.
Features
- 3-inch flexible blade
- Durable construction
- Comfortable handle
- Rust-resistant
- Lightweight design
Pros
- Affordable price
- Versatile use
- Comfortable grip
- Flexible blade
- Rust-resistant
Cons
- Handle could be more ergonomic
- Not suitable for heavy-duty scraping
- Blade flexibility may be too high for some
- Limited blade width options
- Plastic handle may not be as durable
Our Verdict
The Red Devil 4718 3-Inch Flex Putty Knife offers great value for money and is perfect for a range of tasks. Its flexible blade and comfortable handle make it a versatile tool for any toolbox.
3. HYDE 06988 Black & Silver 6-In-1 Multi-Tool
The HYDE 06988 Black & Silver 6-In-1 Multi-Tool is a versatile tool that combines six functions into one, making it a must-have for any DIY enthusiast.

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Why we like it
We like the HYDE 06988 for its multifunctional design and sturdy construction. It’s perfect for those who need a versatile tool for various tasks.
Features
- 6-in-1 multi-tool
- Stainless steel blade
- Ergonomic handle
- Rust-resistant
- Includes nail puller and scraper
Pros
- Multifunctional
- Durable material
- Comfortable grip
- Rust-resistant
- Great for various tasks
Cons
- Higher price point
- May be too bulky for some tasks
- Limited blade width options
- Handle may be too large for small hands
- Not specialized for putty application
Our Verdict
The HYDE 06988 Black & Silver 6-In-1 Multi-Tool is a versatile and durable tool that offers great value for those who need a multifunctional option. Its ergonomic handle and rust-resistant blade make it a reliable choice.
4. Bates Choice 4-Inch Putty Knife
The Bates Choice 4-Inch Putty Knife is designed for both professionals and DIY enthusiasts. Its 4-inch blade is perfect for covering larger surfaces efficiently.

Read Customer Reviews Here »
Why we like it
We like the Bates Choice 4-Inch Putty Knife for its wide blade and comfortable handle, making it ideal for larger tasks like window maintenance and repair.
Features
- 4-inch stainless steel blade
- Ergonomic handle
- Rust-resistant
- Flexible blade
- Lightweight design
Pros
- Wide blade for larger areas
- Durable material
- Comfortable grip
- Rust-resistant
- Flexible blade
Cons
- Not suitable for detailed work
- Blade may be too wide for some tasks
- Higher price point
- Handle could be more ergonomic
- Limited blade width options
Our Verdict
The Bates Choice 4-Inch Putty Knife is perfect for those who need a reliable tool for larger tasks. Its wide blade and comfortable handle make it a great choice for window maintenance and repair.
5. WORKPRO 2-Pack Putty Knife Set
The WORKPRO 2-Pack Putty Knife Set includes two high-quality putty knives, making it a versatile and cost-effective option for any toolbox.

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Why we like it
We like the WORKPRO 2-Pack Putty Knife Set for its value and versatility. The set includes two knives with different blade widths, perfect for various tasks.
Features
- Includes 1.5-inch and 3-inch blades
- Stainless steel blades
- Ergonomic handles
- Rust-resistant
- Flexible blades
Pros
- Great value
- Versatile set
- Durable material
- Comfortable grips
- Rust-resistant
Cons
- Handles could be more ergonomic
- Not suitable for heavy-duty tasks
- Blade flexibility may be too high for some
- Limited blade width options
- Plastic handles may not be as durable
Our Verdict
The WORKPRO 2-Pack Putty Knife Set offers excellent value and versatility, making it a great addition to any toolbox. The different blade widths make it suitable for a variety of tasks.
6. AmazonBasics 2-Inch Putty Knife
The AmazonBasics 2-Inch Putty Knife is a reliable and affordable option for both professionals and DIY enthusiasts. Its 2-inch blade is perfect for detailed work.

Read Customer Reviews Here »
Why we like it
We like the AmazonBasics 2-Inch Putty Knife for its affordability and reliable performance. The 2-inch blade is ideal for detailed tasks around windows.
Features
- 2-inch stainless steel blade
- Ergonomic handle
- Rust-resistant
- Flexible blade
- Lightweight design
Pros
- Affordable price
- Durable material
- Comfortable grip
- Rust-resistant
- Flexible blade
Cons
- Not suitable for heavy-duty scraping
- Blade may be too flexible for some tasks
- Limited blade width options
- Handle could be more ergonomic
- Plastic handle may not be as durable
Our Verdict
The AmazonBasics 2-Inch Putty Knife offers great value for money and is perfect for detailed tasks around windows. Its affordable price and reliable performance make it a solid choice for any toolbox.
7. Titan Tools 17002 2-Inch Stainless Steel Putty Knife
The Titan Tools 17002 2-Inch Stainless Steel Putty Knife is designed for durability and precision. Its 2-inch blade is perfect for detailed work.

Read Customer Reviews Here »
Why we like it
We like the Titan Tools 17002 for its high-quality stainless steel blade and comfortable handle. It’s ideal for detailed tasks around windows.
Features
- 2-inch stainless steel blade
- Ergonomic handle
- Rust-resistant
- Flexible blade
- Lightweight design
Pros
- Durable material
- Comfortable grip
- Rust-resistant
- Flexible blade
- Great for detailed work
Cons
- Not suitable for heavy-duty scraping
- Higher price point
- Blade may be too flexible for some tasks
- Limited blade width options
- Handle could be more ergonomic
Our Verdict
The Titan Tools 17002 2-Inch Stainless Steel Putty Knife is a durable and reliable tool for detailed tasks around windows. Its high-quality blade and comfortable handle make it a great choice for any toolbox.
8. Goldblatt 2.5-Inch Flex Putty Knife
The Goldblatt 2.5-Inch Flex Putty Knife is perfect for both professional and DIY users. Its flexible blade makes it ideal for a variety of tasks.

Read Customer Reviews Here »
Why we like it
We like the Goldblatt 2.5-Inch Flex Putty Knife for its versatility and high-quality construction. The 2.5-inch blade is perfect for detailed work around windows.
Features
- 2.5-inch flexible blade
- Durable construction
- Comfortable handle
- Rust-resistant
- Lightweight design
Pros
- Versatile use
- Durable material
- Comfortable grip
- Rust-resistant
- Flexible blade
Cons
- Handle could be more ergonomic
- Not suitable for heavy-duty scraping
- Blade flexibility may be too high for some
- Limited blade width options
- Plastic handle may not be as durable
Our Verdict
The Goldblatt 2.5-Inch Flex Putty Knife offers great quality and versatility, making it a valuable addition to any toolbox. Its flexible blade and comfortable handle make it perfect for detailed work around windows.
9. Red Devil 4718 3-Inch Flex Putty Knife
The Red Devil 4718 3-Inch Flex Putty Knife is perfect for both professional and DIY users. Its flexible blade makes it ideal for a variety of tasks.

Read Customer Reviews Here »
Why we like it
We like the Red Devil 4718 for its versatility and affordable price. The 3-inch blade is perfect for covering larger areas while still being easy to control.
Features
- 3-inch flexible blade
- Durable construction
- Comfortable handle
- Rust-resistant
- Lightweight design
Pros
- Affordable price
- Versatile use
- Comfortable grip
- Flexible blade
- Rust-resistant
Cons
- Handle could be more ergonomic
- Not suitable for heavy-duty scraping
- Blade flexibility may be too high for some
- Limited blade width options
- Plastic handle may not be as durable
Our Verdict
The Red Devil 4718 3-Inch Flex Putty Knife offers great value for money and is perfect for a range of tasks. Its flexible blade and comfortable handle make it a versatile tool for any toolbox.
10. Bates Choice 4-Inch Putty Knife
The Bates Choice 4-Inch Putty Knife is designed for both professionals and DIY enthusiasts. Its 4-inch blade is perfect for covering larger surfaces efficiently.

Read Customer Reviews Here »
Why we like it
We like the Bates Choice 4-Inch Putty Knife for its wide blade and comfortable handle, making it ideal for larger tasks like window maintenance and repair.
Features
- 4-inch stainless steel blade
- Ergonomic handle
- Rust-resistant
- Flexible blade
- Lightweight design
Pros
- Wide blade for larger areas
- Durable material
- Comfortable grip
- Rust-resistant
- Flexible blade
Cons
- Not suitable for detailed work
- Blade may be too wide for some tasks
- Higher price point
- Handle could be more ergonomic
- Limited blade width options
Our Verdict
The Bates Choice 4-Inch Putty Knife is perfect for those who need a reliable tool for larger tasks. Its wide blade and comfortable handle make it a great choice for window maintenance and repair.
Buying Guide
Choosing the best putty knife for windows involves considering several key features. Here are five important factors to keep in mind:
- Blade Material: Stainless steel blades are durable and resistant to rust, making them an excellent choice for putty knives. Carbon steel blades are also strong but may require more maintenance. For more details, you can check out this Family Handyman article.
- Blade Width: The width of the blade can affect your control and efficiency. Narrow blades are great for detailed work, while wider blades are better for covering larger areas. Learn more about blade sizes in this Popular Mechanics guide.
- Handle Comfort: Look for handles that are ergonomically designed and have a comfortable grip. Rubberized or cushioned handles can reduce hand fatigue during prolonged use.
- Blade Flexibility: Flexible blades are ideal for spreading putty and other materials smoothly, while stiff blades are better for scraping tasks.
- Additional Features: Some putty knives come with extra features like hammer ends for tapping nails or multi-tool functions. Consider these additional benefits when making your choice.
FAQs
What is a putty knife used for?
A putty knife is a versatile tool primarily used for applying and smoothing putty or other filler materials. It can also be used for scraping off old paint, removing wallpaper, and performing various other tasks around windows and other surfaces.
Can I use a putty knife for scraping paint?
Yes, a putty knife is excellent for scraping paint, especially if it has a stiff blade. The sharp edge helps in removing old or peeling paint effectively without damaging the underlying surface.
What is the difference between a putty knife and a scraper?
While both tools are similar, a putty knife is typically used for spreading and smoothing materials like putty or filler. A scraper, on the other hand, is designed specifically for removing materials like paint or wallpaper.
How do I maintain my putty knife?
To maintain your putty knife, clean it after each use to remove any residue. If it’s a stainless steel blade, rinse it with water and dry it thoroughly to prevent rust. For carbon steel blades, you may need to oil them occasionally to keep them in good condition.
What size putty knife do I need?
The size of the putty knife you need depends on the task at hand. For detailed work around windows, a narrow blade (1-2 inches) is ideal. For larger areas, a wider blade (3-4 inches) can help you cover more surface area efficiently.
Conclusion
In summary, finding the best putty knife for windows involves considering factors like blade material, width, handle comfort, flexibility, and additional features. By keeping these points in mind, you can choose a putty knife that meets your needs and makes your window maintenance tasks easier. Check out our detailed product reviews to find the top-rated putty knives available on Amazon.