How Much Does It Cost to Install a Sliding Window?

National Average Range:
$600 - $1,200
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Reviewed by Nieves Martinez. Written by

A sliding window is a window that opens by sliding left or right. These windows have several advantages over others, such as casement and single or double-hung windows. Sliding windows are easier to operate and have fewer parts. They also tend to allow wider installations, so contractors can design bigger windows for a wider view.

The average cost to replace a single sliding window ranges from $600 to $1,200, with most homeowners paying about $725 to install a 36” x 36” double aluminum sliding window with double-pane glass. Installing a small single-pane vinyl sliding window measuring 36” x 24” costs as low as $450. Installing a large triple-pane 48” x 60” steel sliding window costs up to $1,800. The final cost depends on the size, frame material, and extra features.

Cost to Install a Sliding Window

Sliding Window Prices
National average cost$725
Average range$600-$1,200

Sliding Window Installation Cost by Project Range

Installing a single 24” x 36” single-pane vinyl sliding window
Average Cost
Installing a double 36” x 36” aluminum sliding window with double-pane glass
Installing a triple 48” x 60” steel sliding window with triple-pane glass

Sliding Glass Window Price by Size

The window’s size is the most important cost factor for sliding window installation. This chart lists common sizes and the average cost. When sizing windows, you may notice measurements like 23½” x 47½”. These are the window’s actual measurements, designed to fit into a 24” x 48” opening. Round the measurement up to see the size. The costs listed in the table below are for the glass without installation. Prices are based on the cost of the parts of a standard double-pane window, not including installation:

Sliding Glass Window Price by Size

Sliding Glass Window Price by Size

SizeAverage Cost (Material Only)
36” X 24”$125
48” x 24”$150
36” x 36”$350
48” x 36”$350
60” x 36”$450
48” x 48”$500
60” x 48”$550
60” x 60”$600

Sliding Window Price by Type

There are three main types of sliding windows. A single window has two sides, called panes, and one pane slides left and right to open. A double window also has two panes, and both slide left and right to open. A triple window has a fixed central pane, plus a panel on the left and right that slide open. Consider the window’s size, available space, slider type, and budget when deciding which type of sliding window to install. Here are the average prices for types of sliding windows, not including installation.

Sliding Window Price by Type

Sliding Window Price by Type

TypeAverage Cost (Material Only)
Single$130 - $350
Double$150 - $600
Triple$300 - $2,000

Single Sliding Window Cost

Depending on the size, single sliding windows cost an average of $130 to $350. A single sliding window has a single pane that slides to the left or right. The slider can be on the left or right. Single sliding windows can often be found in home improvement stores and be pre-built to standard sizes. Single sliding windows are less expensive and easy to use, but one side of the window does not open.

Double Sliding Window Cost

Double sliding windows range from $150 to $600. A double sliding window has two panes that move independently. These windows use a more robust slider and seal mechanism. Double slider windows are usually manufactured by name brands and sold through dealers. Double sliding windows open either direction or toward the middle, with a space on either side. However, they tend to be more expensive and use more complex parts.

Triple Sliding Window Cost

The average cost for triple sliding windows ranges from $300 to $2,000. A triple sliding window has a single fixed pane in the center with two sliding panes, one on each side. The left, right, or both sides may be opened at the same time. Triple slider windows are designed for very wide installations. A triple sliding window is an excellent choice for a large wall, but most smaller homes do not have the available space.

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Sliding Window Frame Price by Material

The frame of the window holds the glass in place. Frames are functional but also stylish. The most popular choice of frame is vinyl, for its lower cost and better customization options. Other considerations include durability and design, which affect the material and price. Temperature range, amount of rainfall, and energy efficiency are important considerations for the frame material. Although they can increase the installation budget, the durability and energy efficiency of a frame may offset the cost with fewer repairs.

Sliding Window Frame Price by Material

Sliding Window Frame Price by Material

MaterialAverage Cost (Material Only)
Vinyl$200 - $600
Wood$225 - $1,000
Fiberglass$300 - $900
Aluminum$300 - $950
Steel$585 - $1,500

Vinyl Sliding Window Cost

Vinyl sliding windows cost an average of between $200 and $600. PVC is a common type of vinyl used in window frames. It is tough plastic and works as a good insulator. Like aluminum, it is easy and inexpensive to manufacture. However, vinyl does not work well with paint. Some paints soften and weaken the vinyl, which damages the window frame. Paint also does not adhere well to vinyl, causing it to peel and flake. This is an important consideration if there are plans to paint the house, especially in a different color.

Wood Sliding Window Cost

Wood sliding windows range from $225 to $1,000 on average. Natural wood comes from trees or sometimes bamboo or other composites. Wood has a lovely natural finish but requires maintenance to prevent warping and damage. Pine, Douglas fir, and oak are common types of wood in pre-built windows. Some manufacturers offer more expensive custom woods, such as mahogany, cherry, or other custom species. Wood is typically treated with a stain and sealant to bring out the grain and protect the finish. Some manufacturers offer painted or aluminum-clad wood.

Fiberglass Sliding Window Cost

The average cost of fiberglass windows is between $300 to $900. Fiberglass is made from thin strands of glass embedded in plastic. It is extremely tough and durable, and it also does not expand or contract with temperature fluctuations. Because of the material, fiberglass windows can last up to 50 years without replacement. However, fiberglass is much more expensive than other materials, and color choices are limited. They also tend to fade more than other windows, such as vinyl.

Aluminum Sliding Window Price

Sliding windows with aluminum frames range from $300 to $950. Aluminum is a lightweight metal. It is inexpensive to manufacture but does not insulate well. Consider installing aluminum windows in climates without wide temperature ranges, especially if the climate could heat the window material above 140° F. Vinyl can melt at those temperatures. Because aluminum does not expand and contract as much as vinyl, aluminum windows require less maintenance.

Steel Sliding Window Cost

Sliding steel windows have an average cost of $585 to $1,500. Steel is a durable, heavy metal that could be a good option for homeowners who want a modern look. Steel windows are very expensive and often chosen for heavy-duty installations. Steel is extremely durable in non-marine conditions. When installing steel near the ocean or similar salt-water conditions, it should be checked regularly for corrosion and rust. However, there are limited design choices, and steel is not a good thermal insulator.

Replace vs New Installation

Replacement windows typically cost less to install than new installation. This is because the bulk of the work has been done - the cutting and framing of the wall, as well as the siding or finishing of the casements. New installation can take significantly longer - one to two days for installation - as well as cost a minimum of $250 to install, versus $50 for a direct replacement.

Cost of Sliding Windows by Brand

The brand of window affects not only the cost but the options available. Some manufacturers offer different designs, which affects your home’s appearance. Most sliding window manufacturers offer a warranty on manufacturing defects for as long as you own the home. Here are some of the most popular brands that manufacture sliding windows.

Cost of Sliding Windows by Brand

Cost of Sliding Windows by Brand

BrandAverage Price (Material Only)
Pella$175 - $400
Jeld-Wen$200 - $500
Milgard$350 - $1,200
Simonton$450 - $700
Andersen$500 - $950

Pella Sliding Window Cost

The average cost of Pella windows is between $175 and $400. Most Pella windows are vinyl, but some are made with fiberglass or wood. They tend to be a good mid-range sliding window with decorative options. Some models are found at home improvement stores, while others are only available through contractors. The warranty lasts as long as you own the home, with some exclusions.

Jeld-Wen Sliding Window Cost

Average prices range from $200 to $500 for Jeld-Wen sliding windows. Jeld-Wen windows typically feature a simple design and less expensive materials. They are often found in home improvement stores. The basic warranty lasts as long as you own the home, although some windows have shorter coverage periods and exceptions.

Milgard Sliding Window Cost

Expect to pay around $350 to $1,200 for Milgard sliding windows. Milgard offers a highly customizable sliding window. This includes options for wood, aluminum, fiberglass, and wood, plus a range of colors and grids. Milgard offers a full lifetime warranty, including parts and labor, for as long as you own the home.

Simonton Sliding Window Cost

Sliding windows from Simonton usually cost around $450 to $700. Simonton windows are on the higher end of mid-range windows. They are only offered by installation contractors. Simonton offers custom sizing, which is helpful for unusual window sizes. Also, Simonton stands out for their double-lifetime warranty, covering two owners of the home.

Andersen Sliding Window Cost

The average price for Andersen sliding windows is between $500 and $950. Andersen sliding windows typically have wood, fiberglass, or composite frames. These higher-end windows are usually installed by contractors. The warranty for most products is 20 years for glass and 10 years for the other parts, not including labor.

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Sliding Window Glass Price by Type

The type of glass in a sliding window also affects the cost. Typically, a window has 1 to 3 panes, which insulate the home. Some manufacturers seal the panes with gas inside or treat the glass with special coatings. In general, the more panes of glass or the more coatings, the less heat goes through the window. This is especially helpful for climates with extreme temperatures because better insulation means lower heating and cooling costs. Many enhancements can be combined, such as low-E glass and double-pane argon-filled windows.

Sliding Window Glass Price by Type

Sliding Window Glass Price by Type

Glass TypeAverage Cost (Window Only)
Single-Pane$150 - $400
Double-Pane$150 - $600
Reflective Glass$225 - $500
Low-E Glass$250 - $840
Argon Gas$375 - $580
Triple-Pane$400 - $950
Krypton Gas$525 - $1,190

Single-Pane Sliding Windows Cost

Expect to pay between $150 and $400 for single-pane windows. Single-pane windows have only one sheet of glass in each frame. They are the most basic type of window on the market, which makes them less expensive. As there is only one pane, there is no air pocket that can prevent the heat from being transferred, making these windows poor insulators.

Double-Pane Sliding Windows Cost

Double-pane windows cost an average of $150 to $600. Double-pane windows have two layers of glass in each frame. These windows insulate much better than single-pane windows, and the space between them can be treated with insulating gases, such as argon and krypton, or special coatings. However, lower-quality windows can develop leaks and get mold or other materials between the panes.

Reflective Sliding Window Cost

Reflective-coated windows usually cost between $225 to $500. A reflective coating is a treatment applied to the glass panes in a window. This coating reflects part of the sun’s rays to improve the home’s energy efficiency during the summer. This gives the glass a tint like sunglasses.

Low-E Glass Cost For Sliding Windows

Depending on the manufacturer, low-E coated windows cost around $250 to $840. Low-E stands for low-Emissivity. Instead of blocking light from the sun, low-E windows block heat and UV (ultraviolet) rays. This makes them better for year-round applications. These treatments can only be applied in the factory and increase the cost.

Sliding Argon Gas Windows Cost

Sliding argon gas-filled windows cost an average of $375 to $580. Argon gas is a non-toxic gas similar to helium but denser. The density of argon makes it a better insulator. Many double-pane sliding windows use argon gas between the panes. If one of the panes breaks, the gas will be lost, and the entire window needs to be replaced.

Triple-Pane Sliding Windows Cost

Triple-pane sliding windows range from $400 to $950. A triple-pane window has three layers of glass in each frame, which adds to the cost. Triple-pane windows insulate better than single and double-pane windows. Also, the extra layer makes special treatments more effective.

Sliding Krypton Window Cost

Krypton is typically used in triple-pane windows, and krypton-filled sliding windows cost an average of $525 to $1,190. Krypton is another inert gas, similar to argon. Krypton is a better insulator than argon, but it is more expensive. This is offset by using less space between each pane of glass.

Sliding Window Installation Cost

Installing a window is a difficult and skilled job. Unless you have experience with building, it is recommended to hire a contractor to install sliding windows.

Most contractors estimate a job based on the expected time to complete the work. This time is calculated at an hourly rate and added to the window’s cost. Some contractors offer an estimate and bill only for labor and materials. Other contractors offer a single fixed price. Average labor rates for building contractors are $45 to $85 per hour. Smaller windows can be installed in 2-3 hours, while larger windows may take 6-8 hours.

The window’s cost varies depending on the size and material, but expect an average of $350 for a 36” x 36” double-pane aluminum window. The installation costs around $300 for 5 hours and requires miscellaneous supplies, such as nails, screws, gaskets, shims, and a sealant, which adds about $50 to $100 to the price. The project’s cost is usually around $725.

New windows may require creating an opening in a wall to accommodate the window. This may require a bigger crew to finish the job in one day and not leave the home open to the elements overnight. A new window installation averages $400 to $600 in labor. The window’s size is also a factor in how much labor is involved. A smaller window costs an average of $250 in labor, while a very large window averages $800. The total cost of the project for materials and labor to create the hole and install the window is around $1,100.

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Sliding Window Replacement Cost

Replacing an existing sliding window is much easier than installing a new window. For smaller or medium-size windows, expect an average of $250 to $400 in labor. Depending on the window’s size, it may take a crew 2-3 hours or a single laborer 4-6 hours. The window’s cost depends on the size and materials but averages $350. In addition to the window and labor costs, a window installation requires miscellaneous hardware like screws, sealant, nails, and shims. These minor parts add $50 to $100 to the total cost of the replacement. The total cost for materials and labor to replace a sliding window is usually around $750.

Replacing an existing window may also incur labor fees to remove and dispose of the old windows, usually around $60. In some cases, replacing the window glass may be cheaper than replacing an entire sliding window.

Sliding Windows Pros And Cons

Sliding windows have several advantages. First, they have few mechanical parts that can break, meaning fewer repairs. Opening the sliding window moves the pane left and right, which is easier than lifting a heavy window. Sliding windows can also accommodate very wide openings, delivering a better viewing angle and airflow.

Most sliding windows are limited to an opening on one side only. The cost increases to install a window that opens on both sides. Sliding windows also have a seal, which must be cleaned and inspected regularly to prevent drafts. As with all windows, the insulation a sliding window provides depends on the quality of products used. If the mechanical parts of a sliding window are maintained properly, sliding windows can provide a well-insulated and easy-to-open alternative than other windows, such as double-hung windows.

Fiberglass sliding windows in apartment

Sliding Window Maintenance

Sliding windows require minor maintenance. The tracks in which the window slides should be cleaned regularly. Some sliding windows have a roller mechanism, which should be checked and lubricated annually. The seals and gaskets should be checked to keep a weather-tight seal. Keep the windows clean to avoid buildup and other excessive wear and tear.

All windows should also be inspected for flaws annually. A good habit is to check them when you rake leaves or clean rain gutters. Check windows for cracks, problems with weatherstripping, and cloudiness in the window that could indicate a bad seal. Wood frames should be checked a few times per year since moisture can quickly damage the frame. Many window manufacturers design windows specifically for your climate, but if the window is installed in a climate with extreme weather or temperature, the windows should be checked more frequently.

Green Sliding Window Options

Replacement windows are one feature that can substantially improve your home’s energy efficiency. Upgrading from single-pane to double-pane or triple-pane windows can significantly reduce energy costs. Expect to pay $150 to $950 for double or triple-pane windows.

Special treatments, such as reflective coatings and low-E glass, also help your home be greener. These coatings keep the sun from overheating the house in the summer, reducing cooling costs. And low-E coatings help prevent heat loss in the winter. Reflective coatings and low-E glass windows usually cost between $225 and $840.

Additionally, you could save between $125 and $340 a year by replacing your old single-pane windows with ENERGY STAR® options.

Casement vs Sliding Windows Cost

A sliding window, sometimes called a gliding window, opens by sliding left or right in a track. A casement window opens by swinging on a hinge, often using a crank.

Casement windows are more complex and cost an average of $855 to install. These windows have more moving parts, which add to the total cost of ownership. Casement windows are also limited in size and rarely more than 36” wide.

Sliding windows cost an average of $850 to install. With fewer moving parts, sliding windows are easier to operate and maintain a lower ownership cost. Sliding windows can accommodate very wide openings, with sizes up to 60” wide.

Framed vs Frameless Sliding Windows

A frameless window sets the glass directly into the wall or a minimalist frame. These windows are designed to accentuate the view, rather than the window itself. Frameless windows tend to be custom-designed, so expect to pay $25 to $75 per square foot.

Frameless windows often use double-pane construction to improve energy performance. Because they have minimal or no material around the glass, these windows block sound and heat well. However, the wall must be structurally reinforced to support the glass’ weight. Also, a recessed area must be cut into the wall to hold the glass. Another consideration is the warranty, which is often shorter for glass than traditional windows.

Installing a frameless window is expensive. These are typically favored by higher-end designers, and the labor rates reflect top-quality contractors, around $65 to $100 per hour. These costs reflect the care and expertise required in handling large pieces of glass. Installation takes between 4-8 hours for a work crew. In addition, the installation requires brackets, fasteners, and tracking for the windows to move in, although these costs are typically included in the square-foot price. For installation of a 36” x 36” frameless window, expect to pay around $450 for the window and $540 for labor, for a total cost of around $990.

Replacing a frameless window is time-consuming. If the window fails, the contractor usually needs to custom order a replacement from the manufacturer. This can take 2-4 weeks. The replacement can be done in 4-8 hours.

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Enhancement and Improvement Costs

Solar Reflective Films

A solar reflective film is a plastic coating applied to the window. It looks like tinted windows on a car. The reflective coating blocks part of the sun’s rays, reducing the incoming heat. During the day, the windows appear mirror-like. Rolls of reflective film can be purchased for about $1 per square foot.

Spectrally Selective Window Film

These are plastic window coatings similar to window tinting. However, they are engineered to filter out specific wavelengths of light. This reduces solar heating without the dramatic change in color caused by reflective films. A 100-foot roll costs between $900 and $1,750, depending on the width.

UV Reflective Window Film

Like other window treatments, UV reflective window film filters out ultraviolet light. Ultraviolet light has been linked to vision and skin problems, and it causes colors to fade from carpet, art, and furniture. A UV treatment blocks most ultraviolet rays. Most modern UV treatments do not noticeably affect the light’s quality. This treatment is sold in rolls for about $3 per square foot.

Sliding Window Trim

When installing new windows, you may also want to update the trim. A carpenter can usually install this at about $70 per hour. In total, the average cost of installing window trim is between $80 and $200 per window.

Window Screens

In most cases, window screens are not included in the window’s cost. With sliding windows, only the portion of the window that slides or opens needs a screen, not the entire window. Typical window screens cost around $10 to $21 per screen.

Grill Work

If you have an older home featuring grillwork on your windows, you may need to have it replaced. Wrought iron grillwork is custom-made for the windows it will be covering, but there are some readymade grills that start at around $200 per window.

Additional Considerations and Costs

  • Because windows need to have a tight fit to ensure that they work properly and seal out wind and moisture, it is generally recommended that you have them installed by a professional.
  • Depending on your window’s location, tempered or safety glass may be required by law. These areas are typically located near stairs and low-level windows. Check with your local town hall to get more information.
  • Weatherstripping may need to be installed around your new sliders to ensure they function properly.
  • A sliding window, especially an energy-efficient window, recoups about 75% of the window’s cost in home valuation. Combined with energy savings, this can save money. Replacing fixed windows with sliding windows can improve airflow and comfort and make a home more attractive to buyers.


  • How much does it cost to fix a broken sliding window?

A broken sliding window costs an average of $250 - $450 to repair. Expect to pay around $100-$150 for parts and $100 - $300 on labor, depending on the window size and parts needed. Some parts may be covered by a warranty.

  • What is the standard size of a sliding window?

Sliding windows come in several standard sizes. Sliding window heights average 24”, 36”, and 48” tall. Widths range from 24” to 60”, with an average of 36” to 48”. Standard sizes are designed to fit a space measured in feet. For example, a 23.5” x 35.5” window is designed to fit a standard 2’ by 3’ opening. The average cost of a 36” x 36” sliding window is about $350.

  • How do you fix a sliding window?

Fixing a sliding window depends on what is broken. For parts like the glass, seal, or gasket, the best option is usually to replace the part entirely. If the slide mechanism breaks, fixing it may be as simple as cleaning the track or replacing a roller. For minor repairs, such as replacing a gasket or roller mechanism, expect to pay between $25 and $75. For major repairs like a full window glass replacement, expect costs of $300 to $450, depending on the glass type.​

  • Which is better, casement or sliding windows?

This depends on the space available and homeowner preference. Casement windows swing open on a hinge, which allows them to open all the way, creating a wider window opening. Sliding windows only open part of the width of the window. Sliding windows may have a slight edge in that they have fewer moving parts, which lowers overall maintenance costs. The average cost to install a sliding window is around $725, and the average cost to install a casement window is $855.

  • Can you change the direction of a sliding window?

For most sliding windows, no. With a double-sliding window, it can be opened from either the left or the right. Sliding windows cannot be converted to slide up and down. Windows that open up and down are called single-hung (with one moving pane) or double-hung (with two moving panes) windows.​

Cost to install a sliding window varies greatly by region (and even by zip code). To get free estimates from local contractors, please indicate yours.

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