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 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.
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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.
- Consistency of quality and service over the years
- Level of warranty support to you
- Industry longevity
- Product innovation
- Consistency of quality and service over the years
- Level of warranty support to you
- Industry longevity
- Product innovation
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.
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Our Product Lines
Milgard C700 Series Single Hung Windows
Milgard C700 Series Fiberglass Single-Hung Windows
The Milgard C700 Series single-hung window brings advanced fiberglass construction to a timeless window style. Designed for homeowners who value durability, clean design, and reliable performance, the C700 uses fiberglass frames that are built to handle decades of real-world conditions. Fiberglass is one of the most resilient and energy-efficient frame materials available today. Formed primarily from silica sand, it expands and contracts at nearly the same rate as glass, helping maintain tight seals that reduce drafts and limit long-term stress on caulking and surrounding materials. With its streamlined profile, expanded color palette, and improved thermal performance, the C700 single-hung window offers a premium replacement option well suited for homes across the Pacific Northwest.
Key Features
Built for decades of dependable performance. Fiberglass is one of the most durable window frame materials available, able to withstand years of Pacific Northwest rain, temperature swings, and moisture without swelling, rotting, or warping. Once installed, it requires minimal upkeep and continues performing reliably year after year.
Improved thermal efficiency comes standard. Every C700 window includes Milgard SunCoat® Low-E2 glass and delivers up to 10% better thermal performance than the previous generation. This helps maintain comfortable indoor temperatures while reducing the strain on your heating and cooling systems.
Helps reduce outside noise. Optional laminated glass packages help dampen exterior sound. Homes located near busy roads, flight paths, or active neighborhoods can experience a noticeable improvement in interior quiet once the window is closed.
A style that blends with your home. Six frame color options, coordinated hardware finishes, and a refined modern frame profile allow the C700 to complement a wide range of architectural styles, from traditional Craftsman homes to contemporary designs.
Backed by a trusted warranty. The C700 is protected by Milgard’s Limited Lifetime Warranty for residential homeowners, with the option to upgrade to a Full Lifetime Warranty at the time of purchase, offering added protection for a long-term investment.
Specifications
| Available Styles | Frame Color | Grid Styles | Grid Patterns | Hardware Features | Hardware Finishes | Screen Options |
|---|---|---|---|---|---|---|
| Horizontal Slider | White | 5/8" Flat | Standard | SunCoat® Low-E2 (standard) | SmartTouch® auto-locking hardware | White |
| Single Hung | Black | 15/16" Sculpted | Standard Half | SunCoatMAX® | Casement: dual-arm steel rotary operator, multi-point lock | Black |
| Casement | Bronze | Simulated Divided Lite (SDL) | Valance | Tinted Glass Options | Awning: single-arm scissor operator, dual lever lock | Bronze |
| Awning | Bark | 2-3/8″ Check Rail | Perimeter Pane | Obscure Glass Options | Bark | |
| Picture | Adobe | Perimeter Corner | Adobe | |||
| Steel Gray | Steel Gray | |||||
| Satin Nickel (upgrade) | ||||||
| Oil Rubbed Bronze (upgrade) |
Milgard C700 Series Picture Windows
Milgard C700 Series Fiberglass Picture Windows
The Milgard C700 Series represents a new generation of fiberglass picture window design created for homeowners who want lasting durability, refined aesthetics, and dependable performance. Fiberglass frames are among the strongest and most energy-efficient materials available for residential windows. Manufactured primarily from silica sand, fiberglass expands and contracts at nearly the same rate as the glass it holds. This similar movement helps maintain tighter seals, reduces air leakage, and places less stress on sealants and surrounding materials over time. With a sleek contemporary frame profile, broader color selections, and improved energy performance, the C700 picture window is a premium replacement option well-suited for homes throughout the Pacific Northwest.
Key Features
Engineered for long-term durability. Fiberglass is one of the strongest window frame materials available, built to handle decades of wet Pacific Northwest weather without swelling, rotting, or warping. Once installed, it requires very little maintenance and continues performing year after year.
High-efficiency glass comes standard. Every C700 window includes Milgard SunCoat® Low-E2 glass and offers thermal performance improvements of up to 10% compared to the previous generation. The result is more consistent indoor temperatures and better energy efficiency throughout the year.
Helps create a quieter interior. Optional laminated glass packages significantly reduce outside noise. Homes located near highways, flight paths, or busy streets can experience a noticeable difference in sound levels once the windows are closed.
Low expansion/A design that fits any home. With six frame color options, coordinated hardware finishes, and a clean contemporary frame profile, the C700 blends easily with a wide range of architectural styles, from traditional Seattle Craftsman homes to modern new construction.contraction rate through 100-degree temperature changes means less glass and caulking failure over time
Warranty protection you can rely on. The C700 is covered by Milgard’s Limited Lifetime Warranty for residential homeowners, with the option to upgrade to a Full Lifetime Warranty at the time of purchase. Milgard stands behind the product to help protect your investment.
Specifications
| Available Styles | Frame Color | Grid Styles | Grid Patterns | Hardware Features | Hardware Finishes | Screen Options |
|---|---|---|---|---|---|---|
| Horizontal Slider | White | 5/8" Flat | Standard | SunCoat® Low-E2 (standard) | SmartTouch® auto-locking hardware | White |
| Single Hung | Black | 15/16" Sculpted | Standard Half | SunCoatMAX® | Casement: dual-arm steel rotary operator, multi-point lock | Black |
| Casement | Bronze | Simulated Divided Lite (SDL) | Valance | Tinted Glass Options | Awning: single-arm scissor operator, dual lever lock | Bronze |
| Awning | Bark | 2-3/8″ Check Rail | Perimeter Pane | Obscure Glass Options | Bark | |
| Picture | Adobe | Perimeter Corner | Adobe | |||
| Steel Gray | Steel Gray | |||||
| Satin Nickel (upgrade) | ||||||
| Oil Rubbed Bronze (upgrade) |
Milgard C700 Series Casement Windows
Milgard C700 Series Casement Windows
The Milgard C700 Series casement window harnesses the resilience of fiberglass in a side-hinged, crank-operated design built for full ventilation. Fiberglass is among the toughest frame materials available, engineered from silica sand to flex at nearly the same rate as glass, keeping seals intact, drafts out, and weatherproofing performing for the long haul. A narrow modern frame, a broader range of exterior colors, and strong energy efficiency make the C700 casement an exceptional upgrade for Pacific Northwest homeowners.
Key Features
Durability designed for the long haul. Fiberglass frames resist swelling, rot, and warping through decades of Pacific Northwest rain and temperature swings, with minimal maintenance required.
Strong energy efficiency from day one. Standard Milgard SunCoat® Low-E2 glass delivers up to 10% better thermal performance than the previous generation, helping keep energy costs down year-round.
Quieter interiors when you need it. Available laminated glass options reduce outside noise, making a noticeable difference for homes near busy roads, flight paths, or high-traffic areas.
A design that fits many home styles. Six frame colors, coordinated hardware finishes, and a clean contemporary profile complement everything from Craftsman homes to modern new construction.
An Energy Star package calibrated for the Seattle region. Meets regional efficiency standards to help homeowners qualify for available rebates and reduce long-term energy costs.
Specifications
| Available Styles | Frame Color | Grid Styles | Grid Patterns | Glass Options | Hardware Features | Hardware Finishes |
|---|---|---|---|---|---|---|
| Horizontal Slider | White | 5/8" Flat | Standard | SunCoat® Low-E2 (standard) | SmartTouch® auto-locking hardware | White |
| Single Hung | Black | 15/16" Sculpted | Standard Half | SunCoatMAX® | Casement: dual-arm steel rotary operator, multi-point lock | Black |
| Casement | Bronze | Simulated Divided Lite (SDL) | Valance | Tinted Glass Options | Awning: single-arm scissor operator, dual lever lock | Bronze |
| Awning | Bark | 2-3/8″ Check Rail | Perimeter Pane | Obscure Glass Options | Bark | |
| Picture | Adobe | Perimeter Corner | Adobe | |||
| Steel Gray | Steel Gray | |||||
| Satin Nickel (upgrade) | ||||||
| Oil Rubbed Bronze (upgrade) |
Milgard C700 Series Horizontal Sliding Windows
Milgard C700 Series Fiberglass Sliding Windows
The Milgard C700 Series sliding window harnesses the resilience of fiberglass in a smooth, panel-gliding design built for easy operation and lasting performance. Fiberglass is among the toughest frame materials available, engineered from silica sand to flex at nearly the same rate as glass, keeping seals intact, drafts out, and weatherproofing performing for the long haul. A narrow modern frame, a broader range of exterior colors, and strong energy efficiency make the C700 slider an exceptional upgrade for Pacific Northwest homeowners.
Key Features
Durability designed for the long haul. Fiberglass frames hold up against decades of Pacific Northwest moisture and temperature swings without swelling, rotting, or warping, and require very little upkeep over time.
Strong energy efficiency from day one. Standard Milgard SunCoat® Low-E2 glass provides up to 10% better thermal performance than the previous generation, keeping indoor temperatures stable and energy bills lower.
Quieter interiors when you need it. Available laminated glass options cut down on outside noise, offering a calmer indoor environment for homes near highways, flight paths, or busy streets.
A design that fits many home styles. Six frame color options, coordinated hardware finishes, and a clean contemporary profile pair well with everything from classic Craftsman architecture to modern new construction.
An Energy Star package calibrated for the Seattle region. Meets local efficiency standards to help homeowners take advantage of available rebates and lower long-term energy costs.
Specifications
| Available Styles | Frame Color | Grid Styles | Grid Patterns | Glass Options | Hardware Features | Hardware Finishes |
|---|---|---|---|---|---|---|
| Horizontal Slider | White | 5/8" Flat | Standard | SunCoat® Low-E2 (standard) | SmartTouch® auto-locking hardware | White |
| Single Hung | Black | 15/16" Sculpted | Standard Half | SunCoatMAX® | Casement: dual-arm steel rotary operator, multi-point lock | Black |
| Casement | Bronze | Simulated Divided Lite (SDL) | Valance | Tinted Glass Options | Awning: single-arm scissor operator, dual lever lock | Bronze |
| Awning | Bark | 2-3/8″ Check Rail | Perimeter Pane | Obscure Glass Options | Bark | |
| Picture | Adobe | Perimeter Corner | Adobe | |||
| Steel Gray | Steel Gray | |||||
| Satin Nickel (upgrade) | ||||||
| Oil Rubbed Bronze (upgrade) |
Milgard C700 Series Awning Windows
Milgard C700 Series Fiberglass Awning Windows
The Milgard C700 Series awning window delivers the strength and efficiency of fiberglass in a versatile venting design. Fiberglass is one of the most durable window frame materials available, made primarily from silica sand and engineered to expand and contract at nearly the same rate as glass. This helps maintain tight seals, reduce drafts, and limit long-term wear on caulking. With a slim modern profile, expanded color options, and improved energy performance, the C700 awning window is a premium replacement choice designed for the demands of Pacific Northwest homes.
Key Features
Durability designed for the long haul. Fiberglass frames are built to handle decades of Pacific Northwest weather, resisting swelling, rot, and warping even through constant rain and shifting temperatures. Once installed, they require very little maintenance to keep performing well.
Strong energy efficiency from day one. Every C700 window is equipped with Milgard SunCoat® Low-E2 glass and provides up to 10% better thermal performance than the previous generation, helping keep indoor temperatures more stable and energy use lower.
Quieter interiors when you need it. Laminated glass options are available to help reduce exterior noise. Homes near highways, flight paths, or active streets can enjoy a noticeably calmer indoor environment.
A design that fits many home styles. With six frame color choices, coordinated hardware finishes, and a clean modern frame shape, the C700 works well with everything from classic Craftsman architecture to modern homes.
An Energy Star package tailored to the Seattle region for optimal energy efficiency.
Specifications
| Available Styles | Frame Color | Grid Styles | Grid Patterns | Glass Options | Hardware Features | Hardware Finishes |
|---|---|---|---|---|---|---|
| Horizontal Slider | White | 5/8" Flat | Standard | SunCoat® Low-E2 (standard) | SmartTouch® auto-locking hardware | White |
| Single Hung | Black | 15/16" Sculpted | Standard Half | SunCoatMAX® | Casement: dual-arm steel rotary operator, multi-point lock | Black |
| Casement | Bronze | Simulated Divided Lite (SDL) | Valance | Tinted Glass Options | Awning: single-arm scissor operator, dual lever lock | Bronze |
| Awning | Bark | 2-3/8″ Check Rail | Perimeter Pane | Obscure Glass Options | Bark | |
| Picture | Adobe | Perimeter Corner | Adobe | |||
| Steel Gray | Steel Gray | |||||
| Satin Nickel (upgrade) | ||||||
| Oil Rubbed Bronze (upgrade) |
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.
| Feature | Description | Benefits |
|---|---|---|
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
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.
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.
Limited Time:
November Offers
Select your preferred discounts to get started with your free consultation:
Your Selected Offers
Schedule Your Free Consultation
Our Window Styles
Picture
Casement
Horizontal Sliding
Awning
Single Hung
Double Hung
Bay
Garden
Basement Hopper
Transom
Free In-Home Consultation
It all begins with a complimentary, no-pressure, in-home consultation where one of our window and door experts will assess your current design goals and functional needs, answer any questions you may have, and ask a few of their own before recommending the best premium quality window and door solutions.
Critical Measure
Next, our measurement technicians will visit your home at a time of your choosing to take exact measurements so we can place your order with exact specifications. Then, they will help to prepare you for your installation date.
Expert Installation
Finally, our installation experts will arrive on the scheduled date to replace your windows and doors, each equipped with our patented Leak Armor Guarantee, with thorough attention to detail. Once we finish installation, we’ll leave your property spotless, recycle your old materials, and leave you to enjoy your newly upgraded home.