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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 

Patio Door Replacement & Installation

Patio door replacement can improve your home’s exterior appearance and energy efficiency. It can also allow more light in, dramatically brightening your home’s interior.

Patio Door Styles and Configurations

Doors For Small Interior Spaces

Sliding glass or French ‘swing-out’ style patio doors are popular choices – especially for rooms where interior space is limited.

Sliding glass doors

Sliding glass doors are extremely functional and don’t use valuable space. They are available in

  • 2-panel
  • 3-panel and even
  • 4-panel configurations up to sixteen feet wide.

Sliding doors are also low-maintenance because they involve less hardware, compared to a swinging door. Today’s sliding glass doors are extremely durable, and come equipped with high-quality hardware and new multi-point locks that provide added security.

Swing Out Doors

Like sliding doors, Out-swing French doors do not interfere with valuable interior space.

French Door Styling

Sliding French Door Look

Like French Doors? Check out our sliding door models with widened stiles and rails designed specifically to emulate French Door styling.

Swing French Door Look

Sliding doors can emulate a French Door look, but the hinged Out-swing French doors feature a more traditional French door look.

Out-swing doors are available in

  • 2-panel
  • 3-panel and
  • 4-panel configurations

Similarly, in-swing patio French doors come in multiple configurations and also offer the same traditional French door look.

Why Replace my Patio Door?

In addition to aesthetic appeal, there are other compelling reasons to consider replacing aging patio doors.

Save On Energy Costs

Prevent drafts and improve energy efficiency. Modern doors incorporate recently developed energy-saving improvements such as “Low-E” glass options and improved frame-seal construction… It’s not uncommon to notice a draft standing next to an older patio door.

Strong Door Locks = Home Security & Safety

Dramatically reinforce your home’s security with improved lock designs. Jamming a stick in the frame of your old sliding door may work, but why rely on that? Use the stick, and also secure your home by adding an extra line of defense – better locking doors.

Additional Options

examples of different types of patio doors

Patio Door configuration examples: from left to right, single swing-out, dual-sliding, and double, triple, quadruple swing-out styles represent just a small sample of the options available – We’re always happy to assist you in finding the perfect match for your home – just ask!

Whatever style of sliding or swinging patio door you’re considering, most are available with countless options (i.e. handle styles, lock types, “Low-E” glass, etc.), to meet your performance and security requirements.

At Lake Washington Windows & Doors, we offer the latest patio door models from respected manufacturers, including Milgard, Therma-Tru, and Simpson.

Lake Washington Windows has proudly partnered with Milgard, Therma-Tru and Simpson to provide you with patio doors (as well as entry doors) of the highest quality, durability, and aesthetic appeal.

Patio Door Gallery

Free Replacement Estimate

Start saving energy, lower your heating bill, and improve the appearance of your home. Call the Certified Window and Door Replacement Specialists at Lake Washington Windows at (425) 255-2600 for a Free Estimate! We offer financing and payment plans too.


  • Free In-Home Estimate

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