Certified Milgard Window Dealer in Seattle
Looking for high-performance windows built for the Pacific Northwest? As a Platinum-Level Milgard dealer, we offer expert guidance, professional installation, and access to one of the most advanced home replacement window lines available.
Why Milgard Is Our Top Choice For Seattle Window Upgrades
As one of the leading replacement window manufacturers in the nation, Milgard Windows & Doors stands out for its premium-quality replacement windows and doors.
Founded in Tacoma, Washington, in 1958, Milgard’s dedication to excellence and its significant local footprint have garnered nationwide recognition. What sets Milgard apart is the meticulous control over every production stage that guarantees superior quality window products, supported by the industry’s most comprehensive warranties.
Our Endorsement of Milgard Is Rooted in Firsthand Experience
Our founder, Adrian Au, spent nearly two decades at Milgard, honing his expertise in window installation and sales across the United States. His insight into Milgard’s rigorous manufacturing standards and customer-first approach is the foundation of our partnership.
Today, as one of the leading installation dealers in Western Washington, we proudly recommend Milgard for its innovative designs, durability, and industry-leading warranties. Every window we sell comes with our proprietary Leak Armor Guarantee, which ensures all Milgard products we install provide the strongest resistance to leaks and water damage, further protecting your investment.
Our Selection Covers All Your Seattle Replacement Window Needs
At Lake Washington Windows & Doors, we offer the highest-quality fiberglass windows designed to meet the needs of Seattle homeowners. Whether you’re looking for energy efficiency, design flexibility, or long-term durability, we’ve got the right fit for your home, and our top fiberglass recommendation for the Pacific Northwest is the Milgard Ultra Series.
Milgard Ultra Series C650 Fiberglass Windows
Milgard’s Ultra Series C650 fiberglass windows offer exceptional durability, energy performance, and design flexibility, making them a perfect choice for Seattle homeowners. Crafted from exceptionally strong and low-maintenance fiberglass, these frames expand and contract at nearly the same rate as the window glass itself, minimizing seal failures and maximizing long-term stability. These windows resist swelling, rotting, and warping, even through the Pacific Northwest’s temperature swings and high moisture levels.
Key Features and Benefits
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Built to last: Fiberglass frames are extremely strong and durable, with a projected lifespan of up to 80 years.
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Supports custom sizes: The structural strength of fiberglass allows for larger window openings without compromising stability.
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Paintable to match your home: The frames can be repainted any time to match new paint schemes or updated design preferences.
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Stable across extreme temperatures: With a low expansion and contraction rate through 100-degree temperature changes, these windows reduce the risk of glass or caulking failure over time.
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Designed for Seattle’s climate: Every Ultra Series window includes an ENERGY STAR package specifically tailored to improve efficiency in the Seattle region.
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Custom options available: Choose from a wide selection of frame colors, glass types, and hardware finishes to complement your home’s style.
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Configurations |
Color Options |
Glass Textures |
Grid Options |
Hardware Features |
Tint Options |
Screen Options |
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Interior Colors |
Obscure Aquatex |
Interior Grids |
Positive Action® Lock |
Cardinal Low-E |
Standard Mesh |
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White (any exterior color) |
Obscure Clear 42 |
Flat GBG Grid |
Cam Lock (optional) |
Solar Bronze |
PureView Mesh |
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Harmony (harmony exterior only |
Obscure Delta Frost |
Sculptured GBG Grid |
Sash Pull |
Solar Gray |
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Bark (bark exterior only) |
Obscure Frosted Glue Chip |
3/4″ Vintage SDL |
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Black bean (black bean exterior only) |
Obscure Glue Chip |
1-1/8″ Vintage SDL |
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Exterior Colors |
Obscure Matelux |
1-1/8″ Craftsman SDL |
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Frost |
Obscure Narrow Reed |
1-1/8″ Legacy SDL |
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Harmony |
Obscure P516 |
Exterior Grids |
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Bark |
Obscure Rain |
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Black bean |
High-Performance Features and Energy Efficiency Designed for Seattle Homes
Milgard Ultra Series is engineered with durable fiberglass, tailored energy packages, and versatile design options to meet the unique demands of homes in the Pacific Northwest. Every component is crafted to support long-term comfort, performance, and curb appeal.
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Feature |
Description |
Benefits |
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Fiberglass frame construction |
Constructed with fiberglass inside and out, the frame resists moisture damage and expands at nearly the same rate as the insulated glass for lasting performance. |
Provides long-term durability in Seattle’s changing weather while protecting window seals for consistent energy performance. |
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Smooth and reliable operation |
Single and double-hung windows use a full counterbalance system, and sliding windows feature stainless steel rollers. |
Opens and closes easily every time, ideal for everyday use with minimal wear over time. |
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Multi-point locking hardware |
Includes Positive Action™, Cam, and sash locks that exceed forced entry resistance standards. |
Increases home security while offering peace of mind and clean interior aesthetics. |
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Energy-efficient glass packages |
Low-E coatings, argon gas fills, and warm-edge spacers are tailored to regional ENERGY STAR standards. |
Reduces unwanted heat transfer, enhances insulation, and keeps interior temperatures stable year-round. |
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Classic and contemporary design |
Even sightlines, traditional frame profiles, and dark frame finishes are available. |
Blends with modern and timeless architecture, including the popular black-on-black look. |
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Flexible installation configurations |
Available with Nail Fin, Block, or Z-Bar frame profiles to suit new construction or replacement projects. |
Accommodates any retrofit or full-frame install without disturbing trim. |
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Extensive style and size options |
Choose from an extensive range of window styles in standard and custom sizes, plus French swing or sliding patio doors. |
Matches any room layout and maximizes light and views with large custom sizes. |
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Custom hardware and finishes |
Choose from a range of interior and exterior color combinations and hardware finishes to match your home’s style. |
Achieves seamless visual harmony with your home’s color palette. |
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Grid, screen, and glass choices |
Includes flat or sculptured grids, simulated divided lites, obscure glass options, and PureView® screen mesh. |
Enhances privacy, improves views, and supports architectural detailing across all window styles. |
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20-year Limited Lifetime Warranty |
Backed by Milgard’s comprehensive coverage for materials and manufacturing. |
Offers long-term peace of mind and shows confidence in performance and reliability. |
Get Started With a Certified Milgard Dealer You Can Trust
If you’re ready to upgrade your home with high-quality Milgard fiberglass windows, Lake Washington Windows & Doors is here to assist and answer your questions as you navigate the process. As platinum-level certified Milgard dealers and product experts, we bring expert knowledge, factory-trained installation techniques, and a deep commitment to customer satisfaction on every project.
We’ve earned the trust of homeowners across King, Pierce, Kitsap, and South Snohomish Counties with our A+ Rating from the Better Business Bureau, multiple Angie’s List Super Service Awards, and a feature on HGTV’s House Crashers.
Contact us today to schedule your free in-home consultation or visit our closest showroom location to browse our replacement window selection. Before you know it, you’ll be enjoying the peace of mind that comes with Milgard’s Limited Lifetime Warranty and our exclusive Leak Armor Guarantee.
FAQs – Milgard Replacement Windows
Are Milgard Ultra Series windows available in matching patio doors?
Yes. The Ultra Series includes fiberglass sliding and French patio doors that match the window line in color, finish, and performance, to create a unified look across your home.
Can Milgard Ultra Series windows be custom-sized for unique openings?
Absolutely. Milgard manufactures Ultra Series windows in custom sizes to fit nearly any opening, making them ideal for both standard replacements and unique architectural features.
Do Milgard Ultra Series windows help reduce noise from busy streets or highways?
Yes. With available sound-controlling glass and the dense fiberglass frame construction, Milgard Ultra Series windows can significantly reduce outside noise, making them an excellent choice for urban and high-traffic areas.
How long does it take to order and install Milgard Ultra Series windows?
Lead times vary by season, but most Milgard Ultra orders are installed within six to 10 weeks from purchase. We’ll provide an estimated timeline at your consultation and keep you informed every step of the way.
Is professional installation required for Ultra Series fiberglass windows?
To ensure optimal performance and preserve your warranty, Milgard strongly recommends you get your windows installed by a professional installation team.
Can I replace only a few windows with Ultra Series, or do all the home windows need to match?
You can absolutely replace just a few windows with the Ultra Series. Many homeowners begin replacing windows with a key room or trouble area and phase in additional replacements over time. That said, be aware that it can be significantly more cost-effective to do all your windows at once.
What does Milgard’s Limited Lifetime Warranty for the Ultra Series cover?
Milgard’s Limited Lifetime Warranty for the Ultra Series window and door products covers the main window frame for as long as you own your home, including parts to correct any manufacturing defects. It also provides 20 years of coverage for insulated glass units (IGUs) and hardware components. For homeowners within Milgard’s service territory, skilled labor and shipping costs are also included for up to 10 years from the date of manufacture. The warranty is transferable, offering 10 years of coverage to the next homeowner, and applies to residential dwellings such as single-family homes, condos, and townhomes. Commercial applications receive 10-year coverage on all parts.
Are financing options available for Milgard Ultra window projects?
Yes. We offer convenient financing plans through approved partners, helping you save on select windows and patio doors while investing in long-term energy savings and comfort without paying everything up front.
Do you offer Milgard Ultra Series windows to contractors or builders?
Yes. We work with licensed contractors and builders through our dedicated contractor sales program. If you’re managing a project in Western Washington, we can provide product guidance, job site delivery, and support throughout the process.
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COMMERCIAL-GRADE Installation
Leak Armor Lifetime Installation Guarantee
When it comes to preserving the lifespan of your new windows and doors, installation matters. Thousands of window and door installations have honed our replacement process to perfection. For each project, our team follows a streamlined 3-step process to ensure you experience minimal delays and inconvenience before enjoying the benefits of your new window or door.
Top-Rated Window & Door Replacement Services
At Lake Washington Windows and Doors, we offer the highest quality windows and unparalleled customer service, with over 800 5-star reviews. With each installation, our exclusive Leak Armor Installation provides superior protection around your window openings. When you choose us for your window installation project, you can be sure that you’re getting the best.
Financing Options with Convenient 10 Minute Approvals
In addition to special offers and promotions, ask our sales representative about our quick, digital financing application process. From low-interest traditional loans to no down-no payment-no interest deferred financing plans, we can help you fund your replacement window project so you can mobilize your cash for other investments. We are a proud partner of GreenSky, one of the largest lenders for the home improvement industry. See how much you can be pre-approved for.
Every Window Includes a Limited Lifetime Warranty
The beauty of working with the top window manufacturers in the industry is the support you can expect before, during, and after installation. Milgard offers a limited lifetime warranty, though the likelihood of needing to utilize this warranty is low.
Milgard Lifetime Warranty Guarantee
Milgard’s award-winning windows and doors are built to last. However, if you ever encounter an unexpected problem, you can rest assured that their lifetime warranties cover your purchase.
Receive Our Patented Leak Armor Protection with Every Installation
We include our patented Leak Armor protection with every window we install. Developed through thousands of customer installations and years of experience, we utilize layers of flashing, pans, and sealants in a specific manner to provide commercial-grade sealing to residential homes.