How Much Does it Cost to Replace Window Glass? (2024)

By Tamara Jude Updated April 23, 2024

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Window glass replacement costs typically range from $180 to $409, but many homeowners will pay around $279 on average. Window glass replacement isn’t a do-it-yourself (DIY) job, so in most cases, you’ll need to call in professionals. Because windows play a big role in your home’s energy performance, it might be time to consider glass replacement if you start to notice drafty windows and higher utility bills.

This cost guide covers what affects window glass replacement prices, offers tips on reducing window glass replacement costs, and explains why it’s usually better to choose a pro from our top-rated installation companies instead of doing it yourself.

Note: Article cost data via Angi, Fixr, and Home Advisor. 

Major Cost Factors of Window Glass Replacement

Window glass replacement costs an average of $279, but most homeowners spend between $180 and $409. Window glass replacement costs vary by glass type, window size, the type of window, and your location.

Some types of glass, such as double-glazed and thermal windows, cost significantly more to replace than plate or flat glass. Costs vary primarily because of different strength levels and energy efficiency. According to the U.S. Department of Energy, a low-emissivity (low-e) window coating costs 10% to 15% more than regular windows, but reduces energy loss by 30% to 50%.

The type of window and installation complexity also plays a significant part in glass replacement prices. For example, double-hung windows filled with argon or krypton gas cost more to replace than single-paned windows. Prepare for a much more expensive project if you plan to replace bay or bow windows.

Here is a detailed look into the factors that affect your total window glass replacement cost.

Factor 1: Window Type

The type of window has a big impact on window glass replacement cost. Each type has a different number of panes that come in various sizes.

Here’s a breakdown of the cost of window glass replacement by window type.

Window TypeReplacement Cost RangeAverage Replacement Cost
Bay window (3 panes)$500–$3,800$2,150
Bow window (5+ panes)$1,000–$3,000$2,000
  • Single-pane window: Single-pane windows only have one layer of glass and are commonly found in older homes. Although this type of glass is relatively inexpensive, it has poor insulation and noise reduction. Most homeowners pay $50 to $100 to replace a single-pane window.
  • Double-pane windows: Double-pane windows are two layers of glass, which is the standard in most homes today. They have better insulating capabilities, so homeowners can save more money on utility bills. Double-pane windows cost $100 to $300 for glass replacement.
  • Sash/sliding window: These are windows that open vertically made of two sliding framed window sashes. The price for sliding sash windows is between $100 and $900.
  • Bow window (five+ panes): Bow windows also extend outward from the home, but they form more of an arc-shaped structure and have at least four sections of casement windows. The price to replace the glass in bow windows with five or more panes starts at $1,000 and can go upward of $3,000.
  • Picture window: A picture window is a fixed-frame window, which means that it doesn’t open. Picture windows are usually large and allow homeowners to maximize their outdoor view. They are frequently used as the center of bay or bow windows. Picture windows cost $175 to $1,000.
  • Triple-pane window: Triple-pane windows have three layers of glass that offer maximum protection from the environment. According to the Department of Energy, most homes lose about 30% of heating energy through windows, and triple-pane windows offer homeowners the chance to minimize this loss. Expect to pay $300 to $1,000 to replace one triple-pane window.
  • Bay window (three panes): A bay window combines three windows—usually a picture window at the center and two casement windows on either side—that extend outward from the home. These windows are an investment, and replacing the three glass panes costs between $500 and $3,800.
  • Casement window: A casement window has hinges on its side and opens outward using a crank handle. These are great for maximum ventilation and can be combined with other types of windows. The average price is $150 to $1,200.

Factor 2: Glass Type

When you replace your window glass, you’ll have several options at varying price points. The glass type can affect the project’s complexity. For example, installing triple-pane glass is more complicated than installing single-pane glass.

See how much replacement costs vary by the type of window glass.

Type of GlassReplacement Cost Range per Square FootAverage Replacement Cost

We’ve gone into greater detail about each window glass type below:

  • Double-glazed: Double-glazed windows are also known as double-pane windows, which have two panes of glass with a pocket of air between them. This space is typically gas-filled with argon or krypton gas, which helps slow the heat transfer between your home and the outdoors. Replacing double-glazed window glass costs between $3 and $6 per square foot.
  • Laminated: Laminated glass is a type of safety glass using two or more tempered glass layers with one or more plastic interlayers. This extra layer of space between the panels offers noise-reduction properties but also makes installation more difficult. Laminated glass can block 99% of UV rays and is often used in skylight glazing or areas prone to tornadoes and hurricanes. Expect to pay $10 to $20 per square foot to replace laminated glass.
  • Thermal: Thermal glass or thermopane glass is made out of two or three panes of glass. The space between each glass layer is insulated to improve your window’s energy efficiency. Sometimes, moisture buildup between the panes can cause the windows to look foggy, which often requires replacement. Thermal window glass typically costs $10 to $14 per square foot.
  • Tempered: This type of safety glass breaks into tiny granular chunks instead of dangerous shards. You’ll commonly find tempered glass in shower doors or car windshields. Tempered glass replacement costs $12 to $14 per square foot.
  • Plate: Plate glass is a type of flat glass used in large picture windows. Plate glass is clear with few irregularities, but it scratches easily and isn’t the best insulator. Plate glass costs $25 to $100 per square foot.

Factor 3: Window Size

The window size is one of the most important factors in determining the total cost of window replacement. Generally, the glass in larger windows is costlier and more complicated to install. Replacing large panes requires more skill and labor, which increases the cost. Glass thickness is also a factor. Standard window sizes are between 1/8- and 1-inch thick. Changing the glass thickness may mean you also need to replace the frame, which costs $200 to $600.

Below you’ll find standard glass sizes and prices based on double-pane glass, with each pane being 1/2-inch thick.

Window Size in InchesCost Range of MaterialsAverage Cost of Materials
24″ x 36″$130–$180$155
30″ x 36″$160–$270$215
24″ x 54″$200–$285$242.50
36″ x 42″$320–$420$370
28″ x 58″$330–$440$385
46″ x 46″$380–$520$450
46″ x 54″$650–$810$730

Factor 4: Geographic Location

Your geographic location could impact how much your window glass replacement costs. Homeowners living in colder areas should prioritize investing in glass with better insulation properties. Those in warmer climates should consider windows with adequate ventilation and window films designed to reduce cooling costs.

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Closeup of large bay window and red green flower decorations on sunny summer day and nobody architecture
Window Replacement Cost

Replacement windows on average range from $300 to $1,200.

Windows with fixed top sash and bottom sash that slides up, sash divided by white grilles a surrounded by white elegant frame horizontal white vinyl siding on a new construction residence
Single-Hung Windows

Single-hung windows on average cost $150 to $400 per window.

Energy Efficient Upgrades

Double-pane installation typically ranges from $450 to $1,000 per window.


Window Glass Replacement vs. Repair

In some cases, repair may be preferable to replacement. Here are some of the most common window glass repair jobs.

Window IssuesCost Range to Repair
Window Leak$100
Window Thermal Seal$100
Foggy Windows$150
Damaged Glass$350

Professional vs. DIY Window Glass Replacement

Replacing window glass is complicated and most homeowners choose to hire a professional they have experience with this type of project. If you choose to DIY, it will cost between $200 and $830 for the glass and supplies.

While DIY window glass replacement can save you money, contractors can install the glass properly and can generally finish quickly. Plus, they’re able to offer warranties and guarantees on their work.

Professional Glass Replacement

The first step to professional glass replacement involves measuring for new windows and assessing the type of window and the glass’s thickness and size. Next, they’ll carefully remove the existing damaged or broken glass, taking precautions to avoid damaging the surrounding area. After they clean and prepare the window frame, the contractor will remove any debris. The new glass is then measured, cut, and fitted into the frame.

Window installation cost is between $50 to $75 per hour to replace window glass and most projects take 30 to 45 minutes; however, some replacements could take as long as 90 minutes.

Here are some benefits of hiring a pro to replace your window glass:

  • A professional knows how to create a watertight seal to prevent air leaks and the buildup of moisture.
  • You’ll avoid building code violations.
  • A professional knows what permits you’ll need, if any.
  • A professional can do custom or complex window glass replacement.
  • Contractors can purchase materials wholesale, which costs less than what’s available at home improvement stores such as Lowe’s or The Home Depot.
  • Reputable window installers often provide warranties or guarantees on their work.

DIY Glass Replacement

Unless you know how to replace window glass, we don’t recommend tackling this project yourself. Glass is fragile and can easily break. Window glass replacement requires precise work to ensure the glass fits in the frame and to prevent air leaks or sealing problems. Plus, glass replacement could take longer for homeowners and leave your home looking like a construction zone.

Below are a few more considerations before you attempt DIY window glass replacement:

  • You’ll need to purchase materials to DIY, which costs $100 to $630 for the glass itself and $100 to $200 for supplies. You still need to purchase the glass when you hire a pro, but you could end up spending less on labor costs than supplies.
  • Depending on the window glass manufacturer, the warranty may only be valid if replaced by a professional glazier.
  • Incorrect installation can lead to mold growth or water damage. Most professionals charge $10 to $25 per square foot to remove mold; water damage repair costs between $3.75 and $7.00 per square foot on average.
  • Your home will be exposed to the elements throughout the project’s duration.

How to Reduce Window Glass Replacement Costs

Here are a few saving tips to lower your window glass replacement cost.

More Options to Consider When Replacing Window Glass

There are other projects and add-ons to consider when you’re replacing window glass that go above and beyond just changing the glass. Below you’ll find common upgrades when replacing window glass.

Frame Replacement

You can replace the whole frame instead of just the glass. If your window frames are old or damaged, window frame replacement may be a better option. Window frame replacement costs between $184 and $598, with an average of $379.

Window Film

If you’ve considered window film, now would be the best time to if you’re already replacing the glass. A few popular choices include:

Window Tinting

Window tinting is one way to have better control over your home’s temperature and privacy. All window tinting is film, but not all film is tinted. Tinting also involves changing the window’s shade or color, while most films are clear. Window tinting prices range from $7 to $110 per square foot.

Our Recommendation

An avid DIY’er may think they can handle window glass replacement themselves, but we recommend hiring a pro to get the job done correctly. Reach out to at least three professional glaziers to compare window glass replacement costs and find the best companies for window replacement. Request detailed quotes and read the fine print on warranty options.

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Window Glass Replacement Cost FAQ

Is it cheaper to replace an entire window or just the glass?

In most cases, replacing just the glass instead of the entire window is more cost-effective. Replacing the window costs $850 on average, while glass replacement is $279. Replacing the glass will give you many of the same benefits as a new window, such as energy savings and better climate control.

How do you replace one piece of glass in a window?

You’ll need to remove the pane from the window frame and find a replacement that’s the same size and width. You could cut your own glass, but this is difficult and dangerous work. Then, you’ll mount and glaze the window and ensure a watertight seal.

What are the benefits of replacing the glass in a window?

Replacing window glass can improve your home’s insulation. This can help to lower your heating and cooling costs and keep your home at a comfortable temperature.

What is the cost of a window replacement?

Window replacement costs $300 to $2,100 per window, with an average cost of $850. Cost depends on several factors, such as the window material, type, and size, as well as whether you want a full-frame or retrofit replacement.

What is the cost of replacing window glass?

Replacing window glass costs $180 to $409, with an average cost of $279. The main cost factors are glass type, window size, type of window, and geographic location.