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Top Sliding Glass Door Replacement & Installation in Simi Valley, California Ranked
Upgrading your sliding glass door is more than just a home improvement project; it's an investment in your comfort, your home's energy efficiency, and your connection to Southern California's beautiful outdoors. Whether you're looking to replace a worn-out patio door, enhance your view, or improve your home's insulation against Simi Valley's warm summers and mild winters, choosing the right door and installer is crucial. This guide will help you understand your options for materials, styles, and features, and connect you with local expertise to ensure a seamless installation that meets your needs and budget.

Approved Contractor, Inc.
9015 Eton Ave Suite D, Canoga Park, CA 91304
Approved Contractor, Inc. is a window replacement and sliding glass door installation company based in Los Angeles, CA. They provide exterior remodeling services including siding replacement, window installation, and stucco remediation. Serving the Greater Los Angeles area and surrounding counties, they specialize in using manufacturer best practices to ensure reliable, long-lasting results. With over 10 years in business, they focus on residential projects and offer a transparent, customer-focused process.

KNR Sliding & Glass Doors
13713 Moorpark St, Sherman Oaks, CA 91423
KNR Sliding & Glass Doors in Los Angeles, CA specializes in manufacturing and installing custom high-end interior sliding doors for residential and commercial spaces. They offer fully customizable glass or wood doors with patented sliding wheel systems, providing solutions for closets, room dividers, office partitions, and more. Their products are made in the USA and available with professional installation across California.

Fast Glass & Windows Repair by Olwin
1730 Westwood Blvd, Los Angeles, CA 90024
Fast Glass & Windows Repair by Olwin is a window and door repair and installation company based in Los Angeles, CA. They specialize in repairing and replacing window glass, sliding glass doors, and storefronts, including emergency 24/7 board-up services. Their expertise includes handling single and double-pane glass, tempered and laminated safety glass, and energy-efficient insulated glass units for residential and commercial properties.

Alpha One Construction Inc
5827 Franklin Ave, Los Angeles, CA 90028
Alpha One Construction Inc is a licensed general contractor based in Los Angeles, CA, offering window replacement and sliding glass door installation among a wide range of construction services. They specialize in energy-efficient home improvements including solar panel installation, roofing, and insulation. The company serves residential clients and covers multiple service areas in and around Los Angeles.

Anytime Windows and Doors
10746 Burbank Blvd Suite B, North Hollywood, CA 91601
Anytime Windows and Doors is a window replacement and sliding glass door installation company based in Los Angeles, CA. They specialize in energy-efficient, Energy Star-certified vinyl windows and doors, offering full installation services performed by their in-house professional team. The company serves homeowners looking to improve comfort and energy efficiency with high-quality window and door solutions.
Understanding Your Sliding Door Options
The first step in any replacement project is deciding on the configuration that best fits your space and lifestyle. The most common choice is the classic 2-panel sliding door, which features one stationary panel and one that slides open. This is an excellent, space-saving option for standard patio openings, typically around 6 feet wide 1.
For homeowners seeking to maximize natural light and create a more expansive indoor-outdoor feel, 3-panel sliding doors (with two operable panels) or even 4-panel systems are fantastic choices. These are ideal for wider openings and are a hallmark of modern, open-concept living 2 3. Beyond traditional sliders, local providers also offer specialty options like bifold doors that concertina open or stylish barn-style sliding doors for a unique aesthetic 1.
Choosing the Right Material for Your Simi Valley Home
The material of your sliding patio door frame significantly impacts its appearance, durability, maintenance needs, and cost. Here's a breakdown of the most popular choices available from Simi Valley installers:
- Vinyl: This is a top contender for value and performance. Vinyl doors are affordable, require virtually no maintenance, and offer excellent energy efficiency, which is key for managing indoor temperatures 4 5. They are a practical and popular choice for many homeowners.
- Aluminum: If you prefer a sleek, modern look with a very slim frame profile that maximizes glass area, aluminum is a strong option. It's incredibly durable and strong but is generally less energy efficient than other materials unless it includes a thermal break 4 6.
- Wood: For timeless beauty and superior natural insulation, wood sliding doors are unmatched. They offer a warm, classic look but come with a higher price tag and require regular maintenance like staining or painting to protect them from the elements 5 6.
- Fiberglass: Known for its exceptional durability and strength, fiberglass can mimic the look of wood grain while providing excellent energy efficiency and requiring less maintenance. It is often positioned as a premium material option 5 6.
- Composite: These doors blend materials, often offering the aesthetic appeal of wood with enhanced durability and resistance to warping or rotting. They present a solid mid-range option in terms of cost and performance 6.
Prioritizing Energy Efficiency and Comfort
Given Simi Valley's climate, investing in energy-efficient features for your new sliding glass door can lead to significant savings on utility bills and enhance year-round comfort.
The core of efficiency lies in the glass package. Dual-pane or even triple-pane insulated glass units are standard for reducing heat transfer 1. For optimal performance, look for doors with Low-E (low-emissivity) glass coatings. This nearly invisible coating reflects infrared heat, helping to keep your home cooler in the summer and warmer in the winter without compromising natural light 7.
Equally important is the installation and sealing. High-quality weatherstripping and proper installation by a professional are essential to prevent drafts and ensure the door operates smoothly and seals tightly 1.
Noise Reduction Considerations
For homes near busier streets or seeking a quieter indoor sanctuary, the sound-dampening qualities of your sliding door matter. Materials like wood and fiberglass naturally provide better sound insulation than aluminum due to their density 8. Furthermore, opting for thicker glass or specialized acoustic glass packages can significantly reduce outside noise infiltration, making this a valuable feature for many Simi Valley residents 8.
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What to Expect: Investment and Installation
The total cost for a sliding glass door replacement in Simi Valley varies widely based on your selections. A basic, professionally installed vinyl 2-panel door typically starts in the range of $1,000 to $2,200 1 9. Moving into mid-range aluminum, composite, or wood doors often brings the project cost to between $2,000 and $4,000+ 1 3.
For premium, large, custom, or high-performance fiberglass doors, or those with impact-resistant glass, homeowners should budget from $4,000 to $6,500 or more for a complete installation 9 10 11. It's important to view professional installation not just as a labor cost (often $300-$800+) but as a critical component that guarantees the door's performance, warranty, and energy-saving potential 1 4.
Finding a Trusted Local Installer
A successful installation hinges on the skill of the professional you choose. Look for established, licensed, and insured companies in the Simi Valley area with strong reputations for quality workmanship. Providers such as Quality Windows & Doors, The Sliding Door Company, and Preferred Glass & Windows have a local presence and specialize in door installations 5 2 12. Always check recent customer reviews on platforms like Yelp to gauge reliability, communication, and the quality of finished projects 13. Obtaining multiple detailed quotes will help you compare not just price, but the scope of work, products offered, and warranty terms.
Frequently asked questions
Sources
Footnotes
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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 ↩4 ↩5 ↩6 ↩7
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Simi Valley Sliding Door Company - https://www.slidingdoorco.com/sliding-doors-simi-valley/ ↩ ↩2
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Sliding Glass Door Cost Guide 2025 - APRO - https://www.aprodoor.com/sliding-glass-door-cost/ ↩ ↩2
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Cost of Replace Sliding Glass Door: Real Prices from Local Experts - https://reecewindows.com/blog/cost-of-replacing-sliding-glass-doors/ ↩ ↩2 ↩3
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Simi Valley, CA Replacement Windows and Doors - https://www.qualitywindows-doors.com/replacement-windows-doors-simi-valley-ca.php ↩ ↩2 ↩3 ↩4
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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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The Best Sliding Patio Doors for Your Southern California Home - https://ameristarwindows.com/blog/best-sliding-patio-doors-southern-cal/ ↩
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Best Noise-Reducing Sliding Door Brands for Every Budget - https://apaclosetdoors.com/best-noise-reducing-sliding-door-brands ↩ ↩2
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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 It Cost to Install Sliding Glass Doors? | Angi - https://www.angi.com/articles/sliding-door-cost.htm ↩
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Cost to Install a Sliding Glass Door | Styles and Materials - Modernize - https://modernize.com/doors/sliding-glass ↩
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Door and Windows - Preferred Glass and Windows - https://preferredglassandwindows.com/doors-and-windows/ ↩
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TOP 10 BEST Sliding Glass Door Installation & Replacement in Simi ... - https://m.yelp.com/search?find_desc=Sliding+Glass+Door+Installation+%26+Replacement&find_loc=Simi+Valley%2C+CA ↩