What Is Window Glazing and What Are Its Benefits?

Don’t glaze over this important home project

Triple hung window
Photo: tamas / Adobe Stock
Triple hung window
Photo: tamas / Adobe Stock
Highlights
  • Window glazing refers to the glass of a window, the putty used to install the glass, and the act of installation itself.

  • The putty used to glaze windows seals the gap where the glass meets the frame.

  • Some benefits of window glazing include temperature control and noise reduction.

Get quotes from up to 3 pros!
Enter a zip below and get matched to top-rated pros near you.
Geo Icon

Maybe you live in an old home with original wood windows—or maybe the neighbor’s kid just knocked a baseball through your vinyl picture window. Either way, you’ll want to know the answer to the question what is window glazing? Window glazing is the process of installing glass into a window frame using putty. Read on to learn more about window glazing, its benefits, and whether or not you should leave this work to the pros.

What Is Window Glazing? 

Window glazing has a couple specific meanings as it is both a noun and a verb, but in general the term refers to the glass of a window. As a verb, window glazing is the act of installing glass into a window. As a noun, window glazing refers to the glass itself or the compound used to install it. In this article, we’ll largely be referring to the act of window glazing.

How Does Window Glazing Work?

Man scraping old color to fix window
Photo: Adam Höglund / iStock / Getty Images Plus / Getty Images

Window glazing is an important part of window maintenance. A putty-like glazing compound is used to install glass into window frames. The putty can either be latex-based or oil-based. A putty knife is used to clean up and smooth the edges of the putty, and then it’s left to dry. The putty used to glaze windows seals the gap where the window glass meets the frame.

Not only can window glazing be used for the installation of new windows, but you can reglaze windows as needed if you need to restore old windows.

Benefits of Window Glazing

Glazing windows comes with many practical benefits that will improve your home.

  • Controls Temperature. Because window glazing helps seal the gap where the glass meets the window frame, it is less likely that your windows will allow in air that alters your home’s temperature.

  • Improves Energy Efficiency. Glazed windows are more energy efficient windows. When air escapes through windows, this can quickly hike up your energy bill and carbon footprint as you compensate to either cool or heat your home.

  • Adds Property Value. Having a home with well cared for windows that improve energy efficiency can add value to your home upon reselling.

  • Reduces Noise. Noise pollution can cause issues with sleeping, hearing, and more. Glazing your windows adds extra protection from outside noises so your home can be a peaceful place.

Angi Tip

According to the Department of Energy, windows are responsible for 25 to 30% of energy use. If your energy bill is above average, talk to a window contractor about an energy-friendly upgrade.

Caroline Gilbert
Director, Content & Editorial, Angi

Types of Window Glazing

Here are a handful of types of window glazing options that vary in their benefits and drawbacks:

  • Single-pane windows. Windows with a single layer of glass offer less protection against cold or heat.

  • Double-pane insulated glass. This type of window features a layer of inert gas between two window panes to prevent heat from escaping your home.

  • Triple-pane insulated glass. This type seals in two layers of gas between panes to promote heat maintenance. This option is good for people who live in particularly cold climates.

  • Low-E glass. Low-E refers to a “low emissivity” coating on the glass that reduces how much heat passes through the glass.

Should I Hire a Pro for Window Glazing?

If you’re wondering who to call for a leaking window or are installing new windows, you may want to consider hiring a professional. While it is possible to gather the materials on your own and glaze windows yourself, consulting a professional can provide peace of mind knowing the job will be done right. If you know you can DIY the job effectively, then saving money on the labor portion of window repair costs might be a good idea. If not, you can look into window repair services near you and find the right professional for your needs.

Need professional help with your project?
Get quotes from top-rated pros.
The homeowners guide to window services
From average costs to expert advice, get all the answers you need to get your job done.
A renovation team works on walls and ceiling; one person is on a ladder while others remove drywall near a window and inspect progress.
May 15, 2025
May 15, 2025
Deciding how to frame your view is important. Learn about how replacement vs new construction windows compare so you can choose the right fit for your home.
close up bay windows on brick house
Apr 25, 2025
Apr 25, 2025
Adding a bay window brings many perks, like more light and increased home value. But there are some drawbacks to consider before starting this project.
A girl and a dog looking out a window
Apr 28, 2025
Apr 28, 2025
Want a quieter home? Learn how to soundproof windows with seven practical methods that block noise and boost comfort—light sleeper and city dweller approved.
Cozy windowsill with blanket
May 9, 2025
May 9, 2025
Want to know how long vinyl windows last? Learn the average lifespan of vinyl windows and the core factors that affect their performance over time.
Father and daughter looking out of new window
Apr 28, 2025
Apr 28, 2025
Experienced DIYers can save money by replacing a window on their own. Here’s a step-by-step process for learning how to replace a window.
spacious living room with skylight
May 9, 2025
May 9, 2025
Skylight sizes and dimensions suit different household needs, see which type is best for your home and fits with your roof style.