FREE Estimates! 425-255-2600
Select Page
Window Installation Awards & Badges
  • Ours was a very small project of 3 basement windows. We were pleased with the excellent communication and updates about the status of our pr... read more - Mark D. - 10/15/2019 

  • Great work! They handled replacing some unusually sized doors and were extremely professional and helpful in making decisions. - Amanda B. - 9/12/2019 

  • Great experience. Beautiful new windows. Crew installed in one day. Customer service was also great. - Jill L. - 9/12/2019 

  • On time professional, friendly. Cleaned up after themselves, courteous. Several of my neighbors have used them as well, and I wouldn’t hesi... read more - Sheila H. - 7/31/2019 

  • I had another quote from a competing window company and Lake Washington Windows had a better price. The competing window company had the s... read more - Salmon K. - 6/18/2019 

Replacement Horizontal Sliding Windows

Horizontal Sliding Windows

Horizontal sliding windows slide left or right, depending on your preference.


Types Of Horizontal Sliding Windows

There are several types of horizontal sliding windows.

  • Aluminum Horizontal Sliding Windows
  • Vinyl Horizontal Sliding Windows
  • Wood Horizontal Sliding Windows

Milgard Horizontal Sliding Windows

Aluminum Series

aluminum series

Aluminum is often used for contemporary homes because of the thin sightlines. However, aluminum windows are also seen on mid-century modern homes.

The Milgard Aluminum Series Features:

  • Sleek
  • Strong
  • Come with Milgard SunCoat Low E-glass – glass windows have a microscopically thin coating that is transparent and reflects heat
  • Aluminum that is thermally improved – provides less heat/cold transfer, so there’s better insulation
  • Full Lifetime Warranty

The Aluminum Series Colors

  • Bronze Anodized (black)
  • Clear Anodized
  • Bronze Anodized
Interior &Exterior Color Options
aluminum series colors

Aluminum Series Glass Types

Sliding Window Obscure Glass

  • Aquatex
  • Clear 42
  • Cross Reed
  • Delta Frost
  • Frosted Glue Chip
  • Clue chip
  • Matelux
  • Narrow Reed
  • P516
  • Rain
aluminum series glass types

Sliding Window Tinted Glass Types

  • Azurelite
  • Cardinal Low-E
  • Evergreen
  • Solar Bronze
  • Solar Gray
aluminum series tinted glass types

Essence Series

essence series

The Milgard Essence Series combines the beauty of wood and the durability of fiberglass. If your home interior requires wood to finish off the look, then the Essence Series is an excellent option.

Wood windows are known to look great and insulate well, but lack exterior durability. Exposure to the elements wares down the wood and its appearance fades. The Essence Series gives you all of the benefits by giving you the look of wood and the weather resistant strength of fiberglass.


Solid Wood Window Interior Types

  • Douglas Fir
  • Natural Pine
  • Primed Pine
  • Primed Wood – paint it your favorite color

Exterior Frame Colors

Milgard offers 16 colors for fiberglass windows.

milgard fiberglass 16 exterior window colors

Style Line Series

style lines windows

Milgard created the Style Line Series to offer homeowners a way to make their home look more expansive. They also made it with high quality and affordable vinyl for great durability, aesthetic, and pricing.

Style Line Exterior Vinyl Window Colors

There are eight premium vinyl colors to choose from.

premium vinyl window frame colors

There are three standard colors.


Trinsic Series

trinsic series

Trinsic was built to accommodate contemporary home styles, and homes with beautiful views. The windows are so low profile that homeowners and guests barely notice the window as the new expanded view captivates them.

Trinsic windows are

  • Vinyl
  • Narrow
  • Energy efficient

You get a sleek style, durability, and the maximum outside view.

Trinsic Exterior Vinyl Frame Colors

Milgard vinyl windows come in eleven exterior frame colors – three standard, and 8 premium. These are the same colors as the Style Line Series above.

Tuscany Series

trinsic series

The Tuscany Series is our premium vinyl window offering. With Tuscany you get can the look of a traditional wood window with the benefits of vinyl. The frame is vinyl, and wide enough that it mimics the look of wood frames.

Tuscany Series windows come in the eleven colors previously mentioned.

Quiet Line Series

Quiet Line Series was created for those homeowners who want as little outside noise as possible. It has exceptional noise protection, so they’re great for high traffic areas like airports, highways, or downtown areas.

The windows are triple glazed and utilize the perfect amount of space to reduce sound. For homes in very busy/loud areas, we have laminated glass and heavier glazing options.


Ultra Series

ultra series

Ultra Series is our premium fiberglass window. It’s built to resist swelling, rotting, and warping. It’s the choice for long-lasting windows.

Andersen Horizontal Sliding Windows

100 Series


The Andersen 100 series is the most economical and eco-friendly offering of sliding windows. It’s made with the composite material Fibrex.

Fibrex is an alternative to vinyl windows that is:

  • 2x as strong as vinyl
  • Does better in extreme temperatures
  • Uses reclaimed wood and reclaimed thermoplastic polymer
  • Reduce VOC emissions
  • Won’t rot, decay, have fungal growth, flake, blister, peel, pit, or corrode



The Andersen E-Series is the most customizable and least economical option. Unlike the other series options, the E-Series is made of wood and protected by aluminum exterior. You can choose custom colors, interior woods, and stains.

Benefits of Horizontal Sliding Windows

Sliding a window sideways is often easier than lifting a window to open it. Windows that open vertically can also close quickly, and either scare or injure people unprepared for it.

  • Free In-Home Estimate

  • This field is for validation purposes and should be left unchanged.

2019 Best of Bellevue Award
Best Window companies in Seattle
Call Now Button