Sliding glass doors and patio doors installed by licensed East Bay professionals with 20+ years of experience. Free estimates, in-home or remote.
Get a Free Patio Door EstimateA patio or sliding glass door is one of the most impactful upgrades you can make to a Bay Area home. The right door floods your living space with natural light, creates a seamless indoor-outdoor flow, and — when properly installed with quality materials, keeps your home comfortable and energy efficient year-round. Windows 4U installs premium systems built specifically for California's climate.
Sliding Glass Door
Sliding glass doors are the most popular patio door choice in the Bay Area, and for good reason. They glide open effortlessly on a smooth track, take up zero swing space, and deliver wide, unobstructed glass panels that bring in maximum natural light and create a true indoor-outdoor connection.
We install two-panel, three-panel, and four-panel sliding systems in vinyl, aluminum, and fiberglass. Options include standard widths, wide-span configurations, and multi-slide systems that stack completely out of the way. Low-E glass and multi-pane options are available for maximum energy efficiency.
Patio / French Door
Patio doors, also called French doors, swing open on hinges rather than sliding, giving your home a classic, elegant look that pairs beautifully with traditional, craftsman, and Mediterranean home styles common throughout the East Bay.
Available as in-swing or out-swing configurations, single active panel, or double active panels. French-style grilles, decorative glass, and transoms can be added for a custom, architectural look. Fiberglass and steel options provide excellent insulation and low maintenance.
We'll recommend the right frame material based on your home's style, your energy goals, and your budget.
Most popular choice. Low maintenance, excellent thermal performance, and moisture-resistant. Won't warp, rot, or corrode in Bay Area weather. Very affordable.
Slim sightlines, modern aesthetic, and exceptional strength. Ideal for contemporary homes and large openings where a thin frame is preferred. Very durable and low maintenance.
Premium performance and longevity. Won't warp, expand, or contract with temperature changes. Best thermal insulation values. Ideal for energy-conscious homeowners.
Real jobs completed by our crew across the East Bay.
The glass in your patio or sliding door plays a major role in your home's energy performance. We offer a range of glass upgrades that reduce heat gain in summer, prevent heat loss in winter, and eliminate cold drafts, keeping your home comfortable year-round and your energy bills lower.
The East Bay's climate ranges from cool, foggy mornings to hot summer afternoons, often in the same day. Patio doors with low-quality glass can become major heat loss and heat gain points that force your HVAC to work overtime. A properly specified, properly installed patio door pays for itself in energy savings.
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