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Top Sliding Glass Door Replacement & Installation in Redmond, Washington Ranked
Replacing a sliding glass door is a significant home upgrade that can dramatically improve your living space. A new patio door enhances natural light, provides better access to your yard or patio, and can significantly boost your home's energy efficiency, curb appeal, and security. For Redmond homeowners, navigating the choices in styles, materials, and energy features can be complex. This guide will help you understand your options, from budget-friendly vinyl to premium fiberglass, and how to find qualified local professionals to handle the installation for a seamless result.

Emerald City Energy Windows & Doors
3225 S 116th St # 117, Tukwila, WA 98168
Emerald City Energy Windows & Doors is a family-owned window and door replacement company based in Seattle, WA. They specialize in installing and replacing windows and sliding glass doors, offering expert design recommendations and partnering with leading brands to provide quality products. Serving homeowners in the greater Seattle area, they focus on personalized consultations and professional installations to meet each client's unique needs.

Emerald City Energy Windows & Doors
23905 Meridian Ave S, Bothell, WA 98021
Emerald City Energy Windows & Doors is a family-owned window and door replacement company based in Seattle, WA. They specialize in installing and replacing windows and sliding glass doors, offering expert design recommendations to fit each home. Serving homeowners in the greater Seattle area, they provide personalized consultations and partner with leading brands to ensure quality and long-term value. Established in 1997, they focus on a hassle-free service experience tailored to individual needs.

Lake Washington Windows and Doors
4500 9th Ave NE Suite 300, Seattle, WA 98105
Lake Washington Windows and Doors is a window repair, replacement, and sliding glass door installation company based in Seattle, WA. They offer a range of premium window and door products, including fiberglass and vinyl windows, with a patented Leak Armor lifetime installation guarantee. Serving residential customers across Western Washington, they provide free in-home consultations and expert installation services.

Renewal by Andersen of Western Washington
700 S Renton Village Pl Suite 600, Renton, WA 98057
Renewal by Andersen of Western Washington is a window replacement and sliding glass door installation company based in Seattle, WA. They specialize in custom-made, energy-efficient windows and doors designed to enhance home aesthetics and functionality. Serving the Western Washington area, they offer a range of window styles and door types, with professional installation by certified installers.

Sound View Window & Door Inc
13555 NE Bel Red Rd Suite 207, Bellevue, WA 98005
Sound View Window & Door Inc is a window replacement and sliding glass door installation company based in Seattle, WA. They specialize in the sales and installation of replacement windows, doors, and skylights, serving both homeowners and contractors. Their team emphasizes proper installation techniques to ensure manufacturer warranties and long-lasting satisfaction.
Why Consider a New Sliding Patio Door?
An outdated or malfunctioning sliding glass door is more than just an eyesore. It can be a major source of energy loss, leading to higher heating bills during our cool, damp winters and making it harder to keep your home comfortable in the summer 1. Drafts, condensation between panes, and difficulty opening or closing the door are clear signs it's time for a replacement. Modern sliding doors offer superior insulation, advanced security features, and durable, low-maintenance materials that stand up to the Pacific Northwest climate. Upgrading is a smart investment that improves your daily quality of life and can increase your home's value.
Popular Styles and Configurations
The classic two-panel sliding door, with one fixed panel and one that slides, remains the most common and cost-effective choice for standard openings 2. However, your Redmond home might benefit from other configurations:
- Multi-Panel or Bypass Doors: These systems feature three or more panels where two or more slide past fixed panels. They are ideal for creating exceptionally wide openings to blend indoor and outdoor living spaces seamlessly 3.
- French Sliding Doors: For a more traditional aesthetic, these units feature hinged doors that swing open. While they offer a classic look, they require adequate swing space both inside and outside your home 4.
- Integrated Features: Don't forget the screen! Retractable or sliding screens are essential for enjoying bug-free ventilation. Also, consider the hardware-modern locks and handles offer enhanced security and can complement your home's style 2.
Choosing the Right Door Material
The frame material is a critical decision that affects the door's appearance, durability, insulation, and price.
- Vinyl: A top choice for budget-conscious and efficiency-minded homeowners. Vinyl frames are affordable, require virtually no maintenance (no painting or staining), and provide excellent thermal insulation, which is crucial for energy efficiency 1 5. They are a practical and popular option in Redmond.
- Aluminum: Known for strength and slim sightlines, aluminum doors offer a modern, minimalist look. Standard aluminum is less insulating but "thermally broken" aluminum frames include a plastic barrier to reduce heat transfer, improving energy performance 6 5.
- Wood: Nothing beats the natural beauty and warmth of a wood patio door. Wood offers superior natural insulation but comes with a higher price tag and requires regular maintenance like painting or sealing to protect it from moisture 1 6.
- Fiberglass: This premium material combines the strength of aluminum with the insulating properties of wood. Fiberglass doors are incredibly durable, resist warping and denting, and can be textured to mimic wood grain. They offer excellent energy efficiency and long-term performance 6 5.
Glass and Energy Performance: A Key Consideration
The glass package is where you'll see the biggest impact on comfort and energy bills. In our climate, prioritizing insulation is key.
- Glass Panes: Double-pane glass with an air or gas fill is the standard and minimum recommendation. For maximum efficiency, especially in colder areas, triple-pane glass provides an additional layer of insulation and sound dampening 1 7.
- Low-E Coatings: A microscopically thin, invisible metallic coating on the glass reflects interior heat back inside during winter and blocks solar heat gain in the summer. This is a highly recommended feature for year-round comfort and energy savings 6 7.
- Gas Fills: The space between glass panes is often filled with inert gases like Argon or Krypton, which are denser than air and provide better insulation than plain air 7.
- Understanding Ratings: Look for the U-factor (measures heat loss; lower is better) and Solar Heat Gain Coefficient (SHGC; measures heat gain; lower blocks more summer heat). Choosing glass with a low U-factor is particularly important for Redmond winters 6.
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Understanding the Investment: Cost Factors
The total cost for a sliding glass door replacement in Redmond varies widely based on your selections. A basic, standard-sized vinyl door with double-pane glass can start around $1,000 to $2,000 installed 1 8. For a mid-range fiberglass or clad-wood door with Low-E glass and better hardware, expect to invest $2,000 to $4,000 9 2. Premium projects involving large custom sizes, triple-pane glass, impact-resistant laminated glass, or complex installation (like structural modifications) can easily reach $5,000 or more 1 8.
The price breaks down into material costs and professional installation labor, which typically ranges from $300 to $800+ for a straightforward replacement 10 11. More complex jobs, like installing a door in a new opening or dealing with rot repair, will increase labor costs. Always factor in the quality of the glass and energy features, as these contribute significantly to the long-term value and operating costs of your home 5.
The Professional Installation Advantage
A precise, weather-tight installation is just as important as the quality of the door itself. Professional installers ensure the door is perfectly level, square, and sealed. They properly flash the unit to prevent water intrusion-a critical step in our rainy climate-and insulate around the frame to eliminate drafts. They also handle the safe removal and disposal of the old, heavy door. A proper installation guarantees the door operates smoothly, locks securely, and delivers the full energy performance promised by its ratings.
Maintaining Your New Sliding Door
To ensure longevity and smooth operation, simple maintenance goes a long way. Regularly clean the tracks of debris and dirt that can impede rolling. Lubricate the rolling mechanism and locks annually with a silicone-based lubricant. Check the weatherstripping seals periodically for wear and tear, and clean the glass and frame with appropriate, non-abrasive cleaners. For wood doors, adhere to the manufacturer's recommended re-staining or painting schedule to protect the material.
Frequently asked questions
Sources
Footnotes
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Cost of Replace Sliding Glass Door: Real Prices from Local ... - https://reecewindows.com/blog/cost-of-replacing-sliding-glass-doors/ ↩ ↩2 ↩3 ↩4 ↩5 ↩6
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What Will it Cost to Replace My Sliding Glass Door? - https://www.thompsoncreek.com/blog/what-will-it-cost-to-replace-my-sliding-glass-door/ ↩ ↩2 ↩3
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Breaking Down the Cost: Investing in a Sliding Glass Door ... - https://www.eurolinesteelwindows.com/breaking-down-the-cost-investing-in-a-sliding-glass-door-replacement/ ↩
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Sliding Glass Door Installation Cost - Houzz - https://www.houzz.com/cost/64-cost-to-replace-a-sliding-glass-door ↩
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How Much Does It Cost to Replace a Sliding Glass Door in 2026? - https://www.nerdwallet.com/home-ownership/windows/learn/cost-to-replace-sliding-glass-door ↩ ↩2 ↩3 ↩4
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7 Powerful Sliding Glass Door Choices to Transform Your Home - https://howepatio.com/sliding-glass-door/ ↩ ↩2 ↩3 ↩4 ↩5
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Sliding Glass Doors: A Homeowner's Guide - https://advancedwindowsusa.com/sliding-glass-doors-a-homeowners-guide/ ↩ ↩2 ↩3
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Sliding Glass Doors Cost Guide 2025: What to Expect - https://www.joneswindow.com/blog-posts/sliding-glass-doors-cost ↩ ↩2
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How Much Does Patio Door Replacement Cost? | WW Tri-Cities - https://www.windowworldtricities.com/article/how-much-does-it-cost-to-replace-a-patio-door ↩
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Sliding Patio Door Installation Everett WA - R&L Windows - https://rnlwindows.com/sliding-patio-door/ ↩
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Cost to Install a Sliding Glass Door | Styles and Materials - Modernize - https://modernize.com/doors/sliding-glass ↩