Is it time to upgrade your home’s windows? Learn more about window replacement costs, considering various window sizes, styles, and energy efficiency.
How Much Does Window Sill Replacement Cost? [2026 Data]
Window service costs depend on your project and location. Check with a local pro for your specific job.
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Cost Insights:
Window sill replacement costs $400, with most homeowners paying $150 to $700 for the full job.
Your sill material and window size drive your total, and labor can run 80% to 90%.
You pay more for second-floor windows because ladders and safety equipment increase labor time on-site.
Hiring a local window repair professional prevents water intrusion and drafts by sealing and installing your window sills precisely and correctly.
In 2026, the national average cost for window sill replacement is $400. Most homeowners pay between $150 and $700, with sill material, window size, and labor rates driving the spread. Costs can run as low as $100 for an aluminum or vinyl sill on a small hopper window, or as high as $1,100 for a wooden sill on a larger bay window.
How Much Does Window Sill Replacement Cost by Material Type?
Window sill replacement materials often cost $6 to $15 per linear foot. Aluminum and vinyl are the most affordable, wood and composite fall in the middle, and fiberglass, stone, and tile cost the most, with tile adding labor because it requires extra installation steps. Choosing a sill material that matches or complements your window frame material helps protect curb appeal, making higher-cost options worth considering when the sill is highly visible.
The table below compares average costs per linear foot across seven window sill materials:
| Window Sill Material | Average Cost (per Linear Ft.) in 2026 |
|---|---|
| Aluminum | $6–$7 |
| Composite | $8–$10 |
| Fiberglass | $8–$15 |
| Stone | $8–$15 |
| Tile | $10–$15 |
| Vinyl | $6–$9 |
| Wood | $6–$12 |
How Much Does Window Sill Replacement Cost by Length?
Window repair specialists charge $75 to $100 per linear foot for window sill replacement, covering both materials and labor, which means the length of your sill is the primary driver of your total cost. See how window sill length affects your total replacement cost in the table below:
| Sill Length (Ft.) | Average Cost to Replace in 2026 |
|---|---|
| 2 | $150–$200 |
| 3 | $225–$300 |
| 4 | $300–$400 |
| 5 | $375–$500 |
| 6 | $450–$600 |
| 8 | $600–$800 |
| 10 | $750–$1,000 |
Window Repair Specialist Costs: What to Expect
Labor accounts for 80% to 90% of your total window sill replacement cost, averaging $320 to $360 for a standard-sized window. Materials are relatively inexpensive, but removing the old sill, cutting the new material to fit, and installing and sealing it are time-consuming processes. Tiled window sills incur higher labor costs because they require replacing the wooden sill and then installing the tile.
Window Sill Cost Factors: What Else Affects the Price?
Sill material, window size, and labor are the primary cost drivers for window sill replacement, but several additional factors can push your total higher or lower.
Type of Window
Your window type directly affects sill replacement costs because it determines how many linear feet of sill need to be replaced. Sliding windows are wider than they are tall, requiring more sill material than narrower casement windows, while bay and bow windows carry the highest replacement costs at $700 to $1,100 due to their larger interior sill surface area. The table below shows how sill replacement costs vary by window type:
| Type of Window | Average Cost to Replace Sill in 2026 |
|---|---|
| Bay | $700–$1,100 |
| Bow | $700–$1,100 |
| Casement | $150–$300 |
| Double-hung | $150–$300 |
| Hopper | $150–$225 |
| Picture | $150–$800 |
| Single-hung | $150–$300 |
Window Location
First-floor windows are the least expensive to service because they are easily accessible, whereas second-floor windows require ladders and safety equipment, which extend on-site time and increase labor charges.
Number of Windows
Replacing a single window sill costs $400 on average, but replacing multiple sills at once lowers your per-window cost because most window technicians offer volume discounts and charge the trip fee only once, splitting it across all windows. Here’s how much it costs to replace window sills based on the number of windows
| Number of Windows | Average Cost Per Sill in 2026 |
|---|---|
| 1 | $400 |
| 2 | $390 |
| 5 | $380 |
| 10 | $375 |
Why You Should Hire a Window Repair Pro
Hiring your local window repair specialist to replace one or several window sills can cost anywhere from $150 to $1,000. While it may be tempting to try replacing them yourself, a pro will have the right tools and experience to complete the job efficiently without risky ladder or tool mishaps.
Here’s why it’s ideal to hire a window repair pro
From identifying deeper problems to ensuring your window sills are aligned properly, here are the benefits of hiring a window repair professional:
A pro can identify underlying issues such as window rot, damaged framing, and water intrusion, that a DIYer might miss.
Experts know how to seal and flash the sill correctly so your home stays protected from moisture and energy loss.
A skilled repair person will measure, cut, and install your sills precisely to prevent drafts, leaks, and future warping.
Licensed contractors often guarantee their work so that a warranty is in place in case a sill needs to be repaired or replaced again.
If you want to DIY window sill replacement
Although it’s recommended to hire a professional to replace your window sill, there are some actionable steps you can prep so the job goes as smoothly as possible.
Move any furniture, plants, decor, or other items that could be in the way of your window.
Take down any blinds, curtains, or shutters to give the pro better access.
Wipe down the sill and the frame to get rid of any dust or debris.
Cover nearby furniture or electronics to protect them from potential dust from cutting or sanding.
Window Sill Replacement vs. Repair
Window sill replacement costs an average of $400, while window sill repair costs between $200 and $300, depending on the repair needed. If you have cosmetic damage to the sill that isn’t threatening water intrusion, it will be more cost effective to carry out a repair. Otherwise, it’s best to spend a bit more on a full replacement to avoid problems in the future.
How to Save Money On Window Sill Replacement
Window sill replacement is a relatively affordable job, especially compared to the potential damage you’d have to fix from a leaking sill. However, there are a few things that can save you money that you may want to consider.
Choose an affordable sill material. The materials for window sill replacement are inexpensive compared to the labor, but choosing a more affordable material, like vinyl or aluminum, will save between $25 and $75 per window, on average.
Combine the work with other repairs. Window repair companies will charge a trip fee and a minimum of $100 per window sill you need repaired. Combining other repairs or window replacements while your pro is on-site can save you some money on additional trip fees.
Finish the sill yourself. Window sill replacement is best left to a professional to ensure it’s installed properly, but you can do the cosmetic work to finish the job to save some money. For example, staining, painting, or sealing a wood sill yourself could save $25 to $50, and tiling a bay or bow window sill could save up to $100 in labor.
Next Steps: Finalize Your Project With a Pro
Consult your window repair pro on the types of materials they recommend based on the existing window size and type.
Get clarity on costs for labor, materials, and other fees or add-on charges.
Be prepared to talk with a window repair pro about how to maintain their work and preserve the window sill after they’re done.
How Angi Gets Its Cost Data
Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We extensively research project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We rely on reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.
Want to help us improve our cost data? Send us a recent project quote to [email protected]. Quotes and personal information will not be shared publicly.
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Window services reviews from real Angi homeowners in Columbus, OH
4.8★ avg. • 35 total reviews
- Bryan G.
We have used Window Warriors many times with no issues. They arrived on time and were very professional . We have pets and Window Warrior team treated them very well, well trusted team.
Window Warrior of Columbus, Inc. - Emily W.
I am highly satisfied with the window replacement service I received; the professionals from Savvy Exteriors were punctual and did an amazing job that exceeded my expectations.
Savvy Exteriors - Sherrie H.
I hired windows depot USA of central to install new windows in house in Oshawa. Ilya was very professional from the start, not only did he offered a great price, he also made sure the installation was on time. I am very satisfied with final outcome. The windows look great and the overall...
Window Depot USA of Central Ohio - Tiffany V.
The team is awesome!! I can generally pick up and clean throughout the week, but they CLEAN! Windows, stair rails, microwave. All the things I can’t ever seem to get to regularly. The house looks and smells great after they leave.
- Michael H.
Description says they handle window repair including rotten hardwood - they called me back right away but didnâ t leave a voicemail. I followed up 3 days later and they said they donâ t do that kind of work.
Window-Gurus - Maria C.
We had a gutter blockage that was causing water to sheet down the side of the house and ultimately it started to come in at a window (need mortar people next). Called around 7:30am, and he responded by 8am. He was able to come out the same morning and do a look over and clean out. He also...
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