Alpha Sliding Windows | High-Quality, Energy-Efficient Design

Benefits

Why choose Alpha sliding windows?

Our sliding windows are built with quality craftsmanship and a modern, space-saving design—perfect for areas where swinging windows won’t work. The adjustable lock offers added security and privacy, and every window comes standard with an anti-lift feature to help keep your home safe.

An innovative solution for the block and tackle system.

Our single hung windows are built with a coil balance system. The beauty of this system is that these windows come with 4 coils on each side to evenly distribute weight and avoid the risk of your window falling.

The only company to triple weatherstrip our windows

Most windows have two or less weatherstrips, making it easy for your windows to frost or have condensation. Our sliding windows are triple weatherstripped for you to have extra protection from the elements.

Enjoy an extra set of secure stainless steel rollers

Typical windows have one wheel per roller. Our Alpha sliding windows use four rollers with two stainless steel wheels each—that’s 8 wheels total—for ultra-smooth sliding performance.

EasyClean+ Glass Technology

EasyClean+ is our latest glass technology—designed to resist scratches, reduce cleaning time, and maintain 100% clear views. Your windows stay cleaner, longer, with less effort.

Configurations

Window Designs

Browse our sliding window styles and discover the perfect fit for
your upcoming project.

Download Brochure

Slider

This window easily glides to provide plenty of ventilation with a panoramic view. Perfect for large horizontal spaces and high-traffic areas in your home.

Single Hung

Single hung windows open up and down to give you a clean and classic style. These windows are ideal for areas where a top sash would be hard to open.

Picture

Picture windows are large and fixed, giving you expansive views and extra light. These windows pair well with operable windows for a complete solution.

Bay

Two angled bay windows and one fixed allow fresh air, sunlight, and energy savings.

Bow

Bow windows create panoramic views, offering sunlight, ventilation, and a clear picture of your surroundings.

Options & Hardware

Bring out your imagination

Transform your sliding windows to your liking with our variety of contemporary colour palettes, robust hardware, and innovative trim finishings.

Exterior Laminate Finishes

Laminate is a patented, sophisticated multi-layer vinyl film that is permanently adhered to the vinyl extrusion to make your window scratch resistant, durable, and reflect 80% of near infared heat. This material offers great colour retention with no chance of substrate failure or minimal fading.

Jet Black

Commercial Brown

Iron Ore

Sable

Brushed Silver

Exterior Trims

Choose from our selection of exterior laminate trims to find the perfect match for your project. For architects, click the button to view our CAD files!

2" Brickmould with Sloped Sill

Offers the look and function of a typical wood window. Removable finish strip simplifies installation. Also available in 2" on all four sides.

1 1/2 Brickmould with Sloped Sill

Offers a slimmer profile. Available in 1 1/2" on all four sides

Rebate Flange

Handy solution that can be used at the window sill only, or on all four sides to cover existing material.

Interior Trims

Choose from our selection of interior laminate trims to find the perfect match for your project. For architects, click the button to view our CAD files!

Jamb Extension

Your choice of vinyl, stain grade, or paint grade wood. Available in standard and custom jamb widths up to 12”

U-Channel Return

Easily accepts your choice of 1/2”, 5/8”, or 3/4”material so you can finish as you’d like.

Grilles Between Glass (GBG)

White Grilles

Available in 5/16", 5/8" and 1" widths.

Beige

Available in 5/16", 5/8" and 1" widths.

Pewter

Available in 5/16", 5/8" and 1" widths.

Brown

Available in 5/16", 5/8" and 1" widths.

Black

Available in 5/16", 5/8" and 1" widths.

Black Exterior & White Interior Split Finish

Available in 5/16" and 1" widths.

Brown Exterior & White Interior Split Finish

Available in 5/16" and1" widths.

Simulated Divided Lites (SDL)

1" Simulated Divided Lites

Exterior and interior finish will match your window finish choice.

1/2" Simulated Divided Lites

Exterior and interior finish will match your window finish choice

2 3/8" Simulated Divided Lites

Exterior and interior finish will match your window finish choice

Glass Obscurity Options

Reeded Glass Pattern

Pinhead Glass Pattern

Rain Glass Pattern

Satin Glass Pattern

Grey Glass Tint

Blue Glass Tint

Bronze Glass Tint

Glass Pane Options

Dual Pane Glass

Two individual pieces of glass separated by a sealed airspace. Installing new dual pane windows with our high-performance frames will significantly improve your window

Triple Pane Glass

Three individual pieces of glass separated by two sealed airspaces provides added performance benefits, especially in extreme climates, as it features additional glass and airspace for improved insulation.

Glass Coatings and Technology

Choose the right coating for your window requirements. If you want to learn more about the benefits of Low-E coatings and EasyClean+ Glass Technology, click the button below!

EasyClean+ PDF

SunGainER

Allows more sunlight to come into your home to give you a better ER energy rating. This is a great option if you don’t get much sun and you want to warm up your house.

SolarBlockU

Blocks sun from coming in to give you a better U value. This is a great option for rooms where you get a lot of sun during the morning and afternoon.

SolarBlockU-I

If you can’t have triple pane glass windows due to it’s weight, SolarBlockU-I is the best choice for you! This coating helps to mimic thermal ratings of a triple pane window on a dual pane window.

EasyClean+

EasyClean+ is a new feature on our windows. This glass technology makes cleaning easier, resists scratches, and provides 100% optically-clear views, keeping your windows looking great with less effort.

Gallery

See it for yourself

See the difference that Durabuilt Windows & Doors can make in your home. Browse our collection of window photos and get inspired!

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Warranty

With every purchase

Your house is so much more than just walls and a roof, and we promise to help you protect it after your installation is complete. Summary below is for purchases on or after Jan 1, 2024. Click the button for full details or older warranties.

Transferable Warranty

10-year Service Warranty

20-year Install Warranty

20-year PVC Warranty

Lifetime Hardware Warranty

Pro-Rated 20-Year Seal Failure Coverage

Blog

Tips & news

May 25, 2025

How To Install Replacement Windows

May 25, 2025

A Guide To Window Replacment Renovations

May 25, 2025

Redesigning outdoors: Patio or Garden Doors?

May 28, 2025

Our Guide To Window Replacement In Canada

Need help deciding?

Connect with leading professionals in your area to help you price and source your next project.

Find a Durabuilt showroom

Experience all the possibilities that our windows and doors offer at a Durabuilt Design Gallery.

Find an authorized dealer

Take your project from concept to completion with the help of a Durabuilt authorized dealer.

Product downloads

Connect with a representative to get access to Durabuilt’s product downloads.

Benefits

Why choose Alpha sliding windows?

Our sliding windows are ideal for spaces where swinging windows aren’t practical—offering a sleek, space-saving design with smooth, effortless operation. Built with quality craftsmanship and modern styling, each window includes a multi-position locking system for customizable ventilation, enhanced privacy, and added security. Plus, every unit comes standard with an anti-lift feature to keep your home safe and secure.

An innovative solution for the block and tackle system.

The only company to triple weatherstrip our windows

Enjoy an extra set of secure stainless steel rollers

Typical windows have one wheel per roller. Our Alpha sliding windows use four rollers with two stainless steel wheels each—that’s 8 wheels total—for ultra-smooth sliding performance.

Easier selection and consistent installation

Our Alpha windows are built with the same universal monoframe design so you can seamlessly mix and match our high-quality and stylish windows however you want.

Configurations

Window Designs

Browse our sliding window styles and discover the perfect fit for
your upcoming project.

Download Brochure

Slider

This window easily glides to provide plenty of ventilation with a panoramic view. Perfect for large horizontal spaces and high-traffic areas in your home.

Single Hung

Single hung windows open up and down to give you a clean and classic style. These windows are ideal for areas where a top sash would be hard to open.

Picture

Picture windows are large and fixed, giving you expansive views and extra light. These windows pair well with operable windows for a complete solution.

Bay

Two angled bay windows and one fixed allow fresh air, sunlight, and energy savings.

Bow

Bow windows create panoramic views, offering sunlight, ventilation, and a clear picture of your surroundings.

Options & Hardware

Bring out your imagination

Transform your sliding windows to your liking with our variety of contemporary colour palettes, robust hardware, and innovative trim finishings.

Exterior Laminate Finishes

Jet Black

Commercial Brown

Iron Ore

Sable

Brushed Silver

Exterior Trims

Choose from our selection of exterior laminate trims to find the perfect match for your project.

1 1/4" J-Trim Brickmould

Allows sliding window to neatly tuck away.

3 1/4" Exterior Extender

Moves the window further into the wall, making it ideal for ICF or other wide-wall assemblies.

Exterior Panning

Extends the frame allowing you to install exterior insulation up to the window frame.

Interior Trims

Choose from our selection of interior laminate trims to find the perfect match for your project.

Jamb Extension

Your choice of vinyl, stain grade, or paint grade wood. Available in standard and custom jamb widths up to 12”

U-Channel Return

Easily accepts your choice of 1/2”, 5/8”, or 3/4”material so you can finish as you’d like.

Grilles Between Glass (GBG)

White Grilles

Available in 5/16", 5/8" and 1" widths.

Beige

Available in 5/16", 5/8" and 1" widths.

Pewter

Available in 5/16", 5/8" and 1" widths.

Brown

Available in 5/16", 5/8" and 1" widths.

Black

Available in 5/16", 5/8" and 1" widths.

Black Exterior & White Interior Split Finish

Available in 5/16" and 1" widths.

Brown Exterior & White Interior Split Finish

Available in 5/16" and1" widths.

Simulated Divided Lites (SDL)

1" Simulated Divided Lites

Exterior and interior finish will match your window finish choice.

1/2" Simulated Divided Lites

Exterior and interior finish will match your window finish choice

2 3/8" Simulated Divided Lites

Exterior and interior finish will match your window finish choice

Glass Obscurity Options

Reeded Glass Pattern

Pinhead Glass Pattern

Rain Glass Pattern

Satin Glass Pattern

Grey Glass Tint

Blue Glass Tint

Bronze Glass Tint

Glass Pane Options

Dual Pane Glass

Two individual pieces of glass separated by a sealed airspace. Installing new dual pane windows with our high-performance frames will significantly improve your window

Triple Pane Glass

Glass Coatings and Technology

Choose the right coating for your window requirements. If you want to learn more about the benefits of Low-E coatings and EasyClean+ Glass Technology, click the button below!

EasyClean+ PDF

SunGainER

Allows more sunlight to come into your home to give you a better ER energy rating. This is a great option if you don’t get much sun and you want to warm up your house.

SolarBlockU

Blocks sun from coming in to give you a better U value. This is a great option for rooms where you get a lot of sun during the morning and afternoon.

SolarBlockU-I

EasyClean+

Gallery

See it for yourself

See the difference that Durabuilt Windows & Doors can make for your homes. Browse our collection of window photos and get inspired!

Warranty

With every purchase

The homes you build are so much more than just walls and a roof, and we promise to help you protect it after your installation is complete. To learn more about our product warranty, press the button below!

Transferable Warranty

Lifetime Warranty

After Service Care

Low Maintenance

Premium Materials

Save On Energy Costs

Gallery

Making a difference

Over the 35 years, Durabuilt has grown to a team of over 700 people. This has meant more capacity to give back to the community that once supported us.

Blog

Tips & news

May 25, 2025

How To Install Replacement Windows

May 25, 2025

A Guide To Window Replacment Renovations

May 25, 2025

Redesigning outdoors: Patio or Garden Doors?

May 28, 2025

Our Guide To Window Replacement In Canada

Need help deciding?

Connect with leading professionals in your area to help you price and source your next project.

Find a Durabuilt showroom

Experience all the possibilities that our windows and doors offer at a Durabuilt Design Gallery.

Find an authorized dealer

Take your project from concept to completion with the help of a Durabuilt authorized dealer.

Product downloads

Connect with a representative to get access to Durabuilt’s product downloads.

Sliding Windows

Casement/Awning

Delta Fiberglass

Front Entryway Doors

Sliding Patio Doors

Hinged Patio Doors

Hollow Metal Doors

Sliding Windows

Casement/Awning

Delta Fiberglass

Front Entryway Doors

Sliding Patio Doors

Hinged Patio Doors

Hollow Metal Doors

Sliding Windows

Benefits

Why choose Alpha sliding windows?

An innovative solution for the block and tackle system.

The only company to triple weatherstrip our windows

Enjoy an extra set of secure stainless steel rollers

EasyClean+ Glass Technology

Configurations

Window Designs

Slider

Single Hung

Picture

Bay

Bow

Options & Hardware

Bring out your imagination

Jet Black

Commercial Brown

Iron Ore

Sable

Brushed Silver

2" Brickmould with Sloped Sill

1 1/2 Brickmould with Sloped Sill

Rebate Flange

Jamb Extension

U-Channel Return

White Grilles

Beige

Pewter

Brown

Black

Black Exterior & White Interior Split Finish

Brown Exterior & White Interior Split Finish

1" Simulated Divided Lites

1/2" Simulated Divided Lites

2 3/8" Simulated Divided Lites

Reeded Glass Pattern

Pinhead Glass Pattern

Rain Glass Pattern

Satin Glass Pattern

Grey Glass Tint

Blue Glass Tint

Bronze Glass Tint

Dual Pane Glass

Triple Pane Glass

SunGainER

SolarBlockU

SolarBlockU-I

EasyClean+

Gallery

See it for yourself

Warranty

With every purchase

Transferable Warranty

10-year Service Warranty

20-year Install Warranty

20-year PVC Warranty

Lifetime Hardware Warranty

Pro-Rated 20-Year Seal Failure Coverage

Blog

Tips & news

May 25, 2025

How To Install Replacement Windows

May 25, 2025

A Guide To Window Replacment Renovations

May 25, 2025