
Patio Doors That Connect Your Home to the Outdoors
A well-designed patio door does more than provide access to your backyard. It enhances natural light, improves energy efficiency, and creates a seamless connection between indoor and outdoor living spaces.
Alexander Company specializes in replacement sliding, French, and multi-panel patio doors for homeowners across the San Francisco Peninsula, including Burlingame, San Mateo, Redwood City, and Hillsborough. With over 50 years of experience, our team delivers expert guidance and precise installation for long-lasting performance.
Not sure where to start? We’ll walk you through the options.
Why Choose Alexander Company?
For homeowners across the San Francisco Peninsula, Alexander Company is a trusted choice for high-quality patio door replacement. With decades of experience, we deliver expert installation, premium products, and dependable service.
Here’s why homeowners choose us:
- Expert Installation – Precision work from an experienced, in-house team
- Premium Products – Milgard, Simonton, Andersen, and Marvin options built to last
- Complex Project Expertise – Structural work, permits, and custom solutions handled with confidence
- Customer-First Service – Clear communication from consultation to completion
- Family Owned & Operated – Serving Burlingame and the Peninsula with a strong reputation for quality
Refresh your home with a beautiful, energy-efficient patio door that enhances both function and style, creating a seamless indoor-outdoor connection.

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Patio Door Replacement Options
We offer a wide range of patio door styles designed to enhance indoor-outdoor living while improving energy efficiency and security. Our selection includes high-quality options from Milgard, Simonton, Andersen, and Marvin.
Customizable frame materials, glass packages, and finishes, let you find the perfect patio door solution for your home.
Patio Door Styles
Swipe left or tap the arrows to explore different window styles.

Sliding Glass Doors
Modern sliding glass doors are ideal for high-traffic areas. They glide smoothly and provide expansive views without requiring additional space.
- Milgard – All series
- Andersen – 100, 200 & 400 series
- Marvin – All series
- Simonton – Contemporary & French Sliding

French Style Sliding Doors
These doors combine the traditional look of French doors with the convenience of a sliding design, offering both elegance and efficiency..
- Milgard V400 Tuscany
- Milgard C700 Fiberglass
- Marvin Ultimate
- Simonton French Sliding
- Andersen 400 Series Frenchwood

Inswing/Outswing Doors
Swinging patio doors create a timeless, upscale look. Choose inswing, outswing or French door configurations with optional sidelites and transoms.
- Milgard – All Series
- Andersen – 100, 200 & 400, A and E series
- Marvin – All series

Mult-slide/Multi-Stack Patio Doors
Multi-slide patio doors feature multiple panels that glide and stack neatly to create large openings. They are ideal for maximizing views, light, and access to outdoor spaces.
Note: Available for purchase by homeowners and contractors; installation not included.
- Milgard Series: AX650, VX350 and AX450 Moving Glass Walls
- Marvin Ultimate Multi-Slide and Modern Multi-Slide
- Andersen – A-Series MultiGlide™

Bi-Folding Patio Doors
Bi-fold patio doors open accordion-style to create wide, unobstructed openings. They are ideal for maximizing space, natural light, and indoor-outdoor living.
Note: Available for purchase by homeowners and contractors; installation not included.
- Milgard AX550 Moving Glass Walls (Purchase only, No Installation)
- Marvin Ultimate & Elevate
- Andersen 200, 400, A & E Series

Pocket Patio Doors
Pocket patio doors slide into the wall cavity, disappearing from view for a clean, modern look. They are ideal for creating seamless indoor-outdoor connections.
Note: Available for purchase by homeowners and contractors; installation not included.
- Milgard Series: AX650, VX350 and AX450 Moving Glass Walls
- Marvin Ultimate Multi-Slide and Modern Multi-Slide
- Andersen – A-Series MultiGlide™
The Right Patio Door Makes All the Difference
Function, Form, and Fit—Patio Doors Done Right
Upgrade your patio door for comfort, style, and energy efficiency. Whether you’re replacing a door that sticks, leaks drafts, or shows visible wear, Alexander Company offers premium options from trusted brands like Milgard, Simonton, Andersen, and Marvin. With expert installation and personalized service, we make the process seamless from selection to completion.
Ready to transform your home? Contact us today to explore options and schedule your free consultation.
Patio Door FAQs – San Francisco Peninsula Homeowners
Sliding Glass Patio Doors
Yes. Sliding doors offer wide views, natural light, and smooth indoor-outdoor flow without taking up extra space. They are ideal for homes in Burlingame, San Mateo, Redwood City, and Hillsborough.
Quality doors from Milgard, Andersen, and Marvin have tight weather-stripping and energy-efficient glass. This reduces drafts, condensation, and noise from coastal winds.
Yes. Modern sliding doors with insulated frames and energy-efficient glass help keep homes warmer in winter and cooler in summer, which is important in Peninsula microclimates.
French-Style Sliding Patio Doors
French-style sliding doors combine the classic look of French doors with sliding functionality. They feature wider stiles, grid patterns, and traditional styling while saving space.
Yes. They slide rather than swing, so they do not require clearance, making them ideal for compact patios or decks common in Burlingame, Hillsborough, and San Mateo homes.
Use corrosion-resistant hardware and aluminum-clad or fiberglass frames. Clean tracks and hardware regularly to prevent issues from fog and moisture.
Swing Patio Doors (Including French Doors)
Swing doors open on hinges, either inward (inswing) or outward (outswing). French doors are a type of swing door installed in pairs that open from the middle, providing a wide and elegant entryway.
Yes. They work well on patios, decks, or balconies in Burlingame, San Mateo, Redwood City, and Hillsborough, as long as there is enough space for them to swing fully.
Inswing doors need clearance inside, outswing doors need room outside. Proper weatherproofing prevents drafts from coastal fog and wind. French doors give the same benefits but offer a wider opening and classic style.
Yes. Swing doors with multi-point locking systems are very secure and can outperform older sliding doors, especially in busy neighborhoods.
Tips for Selecting a Patio Door
Choosing the right patio door can improve your home’s comfort, style, and energy efficiency. Here are some key considerations for homeowners on the San Francisco Peninsula:
- Choose low-maintenance materials like fiberglass, aluminum-clad wood, or vinyl to handle coastal moisture.
- Use double-pane or Low-E glass to reduce condensation and improve energy efficiency.
- Match grid patterns and finishes to local architectural styles such as Victorian, Mediterranean, or mid-century homes.
- Check permit requirements for larger replacements or structural modifications, especially in Hillsborough and San Mateo.
Patio Door Styles for Every Home
Choose from a variety of patio door styles designed to suit traditional, transitional, and modern homes.
We help you evaluate materials, configurations, and glass options to create the right balance of function, light, and style.






