Seattle Window Replacement: From Design to Installation, WindowStrong’s Got You Covered.

Our Window Replacement Service Will Put a Smile on Your Face & Bring a Whole New Look to Your Home

You Have a Choice
At WindowStrong, we understand that there are a number of Bellevue and Seattle window and door companies you can choose from. That’s why we set ourselves apart by offering unparalleled customer service and product support. After all, we know that you’re our most important asset.

The Science of Windows & Doors
Here’s a secret: Window and door installation are almost never as easy as 1, 2, 3. That’s why WindowStrong has developed one of the most streamlined processes in the industry, which saves you time, money, and perhaps most importantly, frustration. From A-Z, we’ve got it covered.

Our Commitment to You
On top of manufacturer’s warranties, every window and door installed by WindowStrong come with a one-time, completely free glass repair or replacement, as well as a one-year craftsmanship warranty against installation defects. We’re the best at what we do, and we stand behind it.

Request an Estimate

Schedule your no obligation in-home consultation today, and then take 3 days to decide. We guarantee that the price won’t increase, and you won’t find a lower price or more comprehensive installation process!

We Install Windows, Doors & Decks


Whether you need better energy performance or are looking to frame that perfect view, WindowStrong’s one-of-a-kind window installation process and intense focus on value means you can get what you want, headache-free.



Patio or French? Sliding or hinged? Wood, fiberglass, or vinyl? Standard, or custom? Whatever you need your doors to achieve, WindowStrong has a tried and true solution crafted and finely honed over years of experience.


Deck / Patio

Extend your home’s living space while increasing its value with a fully customized WindowStrong deck or patio. Go ahead and invite your friends and family over now, because we’ll be completed in no time flat.



13 Different Styles of Windows: Which is the Right One for You?

13 Different Styles of Windows: Which is the Right One for You?

October 11, 2015

Types Of Windows To Consider #1 Awning Windows– These open up & out and are the perfect way of adding accents to any room. They add to the aesthetics of the interior & exterior of your home and are available in very easy-to-operate installations. If you like, you can also use a combination of fixed […]

Choosing The Right Window Contractor

Choosing The Right Window Contractor

October 4, 2015

How to find an experienced window contractor References- In many ways, this is the best method of choosing the right window contractor in Renton WA. When you contact the company, ask for a minimum of 3 references and preferably get a phone number for these people. Call each of them and ask clear and simple questions […]

10 Most Popular Windows Manufactures and Their Differences

10 Most Popular Windows Manufactures and Their Differences

September 28, 2015

1. Andersen Andersen markets several different product lines of windows; American Craftsman and Renewal, to name a few. This manufacturer’s products are the priciest option available in the market today. You can expect to get your money’s worth. The company is known for the quality of their products, the construction, and different design and material […]


Finely tuned installation process, and impeccable project management

Instead of waiting around for something to go wrong, we take a proactive approach and put a stop to problems before they can occur. From coordinating delivery to arriving on time; from having the right tools to making sure our employees represent the utmost in professionalism, we’re constantly working to make this the best window replacement experience you’ll ever have.And when the unexpected happens, we move swiftly to solve the problem. We get things done fast, and we’ll never leave you hanging.

Decades of experience

You’re spending good money on great windows and doors, and you want to make sure that the installation process reflects this same level of (value). Experience is everything in this industry, and with thousands of installations under our belts, we’ve got what it takes to deliver.

Budget conscious

Because we’re focused on creating lifetime relationships with our clients, we’re not out to make a quick buck, or to sell you something that you don’t need. In fact, with our high-quality product selection, we guarantee that you’ll experience many of the same benefits provided by the big name-brand windows and doors, but at significant savings.