Specialty Windows: Uniquely Shaped Replacement Windows

If you are looking for something out of the ordinary, Signature can make it happen.

We offer bay windows and bow windows, which expand your space without expanding your square footage footprint or requiring an expensive remodel.

Bay windows have 35- or 45-degree angles. Bow windows have 3 or more windows and are connected at 10-degree increments. Both bow and bay windows can be designed with a variety of operating styles, from fixed to casement, etc.

Polygon shape window options include round top, half round, true round, 90⁰ triangle, isosceles triangle, trapezoid, rectangle, narrow profile rectangle, and octagon.

Geometric shapes can be used as stand-alone statement windows or as part of a larger grouping. Individual windows can be built to your specification in sizes up to 49 sq. ft.

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Our specialty windows are available in fiberglass, vinyl, or wood-clad. Multiple finishes available, based on the materials selected.

Divided lite options are also available.

Even the highest quality windows are only as good as their installation. This can be particularly challenging for uniquely shaped windows. We use master craftsmen to install your specialty windows correctly — the first time.

Signature carries product lines that offer outstanding warranties. On top of those manufacturer warranties, we offer the Signature Lifetime Installation Guarantee. For as long as you own your home, you are covered for materials, labor, and glass breakage.

Call us to today to schedule your free in-home consultation 253-887-7792

View Our Amazing Work

Discover The Beauty And
Craftsmanship Behind Each
Of Our Projects

At Signature Window & Door Replacement, we’re proud of our success stories. Our team works hard to create amazing home transformations with new windows and doors. Our customers have often told us how big a difference their new installations have made.

We have a gallery of our window, door, and installation projects for you to see. From single replacements to whole-home transformations, you can see all kinds of successful projects we’ve handled.

Please review our gallery page to discover what we can do for your home.

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MARCH SPECIAL Up to 15% Off Entire Order Plus Flexible Payment Options Redeem Offer Expires 03/31/2026 2 Windows or 1 Door Minimum

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Signature Window & Door Replacement

4.9

Based on 184 reviews

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rachel mf

17:04 06 Mar 26

I cannot praise Signature highly enough. We hired them in 2012 to replace all of our windows and two sliding doors - the work was excellent and we love our Simonton windows. We just hired them again to rebuild our two-story entryway and install a Perva door and new windows. From the very thorough conversations with our salesperson, Vitaliy, to the scheduling with the office staff, to the actual installation - everything is as professional and high quality as you can find. We gathered quotes from three other companies but none of them went to any effort to truly lay out how the job would be accomplished. Photos show the old & new interior side, and the new exterior. Still needs painting but we're so happy!

G Zenkin

04:19 04 Mar 26

After an extensive vetting process and comparing multiple options, I confidently chose Signature Windows & Doors for my home, and they absolutely delivered. The Marvin brand windows they installed are beautiful and of incredibly high quality—the craftsmanship speaks for itself. Beyond the great product, the installation process was truly exceptional. The crew was professional, precise, and made the entire project seamless from start to finish. I highly recommend them to anyone looking for top-tier windows and flawless execution. I had a fantastic experience with Signature Windows & Doors.

Michele V

00:13 26 Feb 26

We called our project "The Window From Hell." It was a HUGE trapezoid window up high in a 2-story living room, and it needed to be replaced after its seal failed. I got bids, and was the most impressed with Danny L at Signature Windows. We had a tight deadline because the home was going on the market and access to the window, especially in the rain, was really challenging. Meeting the deadline, and the safety of the installers, were non-negotiable. Danny came out the very next day to measure the Window From Hell and, not only did he give me the best price, but his company was the only one that had all the scaffolding equipment readily available at no extra charge. The window arrived sooner than expected, and installation was quickly scheduled to meet the deadline. Then we hit a snag: some epic rain made the cedar roof too slippery for safe conditions. Brent and his crew of expert (and very brave) installers rigged up a safe way to haul this brand-new Mother of ALL Windows up to the second floor and install it using very long ladders, secure scaffolding, and harnesses. I think we had 4 or 5 installers for this job. It took all day to get the old Window From Hell out and the new Mother of All Windows installed. But what a job! Perfect caulk lines, perfect cleaning of the glass, perfect clean-up of the job site, indoors and out. Job done ON TIME, SAFELY, and at an excellent price. If Signature can handle my Window From Hell, I am very confident they can install ordinary double-hung windows that exceed your expectations for quality, price, timeliness, and workmanship. I highly recommend Signature Windows.

Robert Horn

01:35 19 Feb 26

I highly recommend Signature. Windows look great, we are really happy with our installers too, they picked up everything each day and were real craftsmen, they took pride in the work they were doing for us.

Leanne Bough

23:41 12 Feb 26

Signature windows was wonderful to work with from the sale through the installation.

Dana B

18:02 25 Nov 25

Everything from the initial consultation, regular updates on my order and installation was wonderful. The most recent installation was the third time I've had Signature replace old windows and I've been so pleased every time. They took the time to explain which windows needed replacement and provided options without any sales pressure. It's so nice to work with a company that believes in great customer service and offers quality products.

Amy Dahlin

16:47 23 Oct 25

We have chosen to work with Danny and his team at Signature Window & Door twice now. We love the quality of the windows and the help they provide in the design process all the way to the finished installation. We put in a 15' folding door at our last home. It was a showstopper! Highly recommend them to bring your home back to life with beautiful windows that are built to last!

Pam Moser

22:08 18 Feb 25

We bought a house that needed all new windows & sliding glass doors replaced. So we did our research and visited window replacement companies to see & touch different window & screen types. We decided to work with Signature Window primarily based on customer service as we received during the research & planning process with Office personnel (friendly, helpful, responsive) & Sales team (product knowledge, design assistance, open & honest).

1st Project (Aug 24) - 8 windows & 1 Sliding Door
2nd Project (Feb 25) - 1 ceiling to floor large window & 2 windows
Product of windows & door was excellent - we are extremely happy.

The customer service experience was superb. We worked with Sales Rep, Scheduler, Window Measuring Rep & Installers - all were friendly, open & honest, communicative, assisted with design & product knowledgeable. Installers did an awesome job with project cleanliness & kept busy all day long.

We are extremely satisfied with our overall experience with window replacement with Signature Windows 🥰

What To Expect Discover The Signature Difference

Local & Family-Owned and Operated Since 1999

Lifetime Product Warranty

Lifetime installation Warranty

Infinity From Marvin® regional dealer

ProVia fiberglass and steel door partner

100% satisfaction guarantee

ABOUT US

Specialty Windows: Uniquely Shaped Replacement Windows

View Our Amazing Work

Discover The Beauty AndCraftsmanship Behind EachOf Our Projects

Sidebar

Our Services

Our Services

Our Reviews

See What Your Neighbors Are Saying

Discover The Beauty And
Craftsmanship Behind Each
Of Our Projects