Western Window Systems Windows and Multi-Slide Door

PREMIUM WINDOWS. PRO-TO-PRO SERVICE.

Partner with the pros in premium windows to enhance the comfort, performance and beauty of the homes you build. Explore high-quality windows from national brands, with local experts on hand to find just the right fit for extraordinary performance, durability and style.

Explore Premium Windows

Pella 250 Series Vinyl Fixed Windows

House Courtyard featuring LaCantina Folding Doors and V2 Direct Set Windows

LaCantina Windows and Folding Doors

PlyGem Windows and Patio Doors

THE WINDOW PARTNER THAT PROS TRUST

From design to delivery and installation, we offer comprehensive window solutions for custom homes or any residential build or remodel.

Unmatched Selection

From high-end windows to cost-efficient options at scale, we work with the nation’s most trusted brands.

Trusted Expertise

Our window specialists know all the best products to meet local requirements and bring your vision to life.

Welcoming Showrooms

Streamline decisions by bringing your customers to see and feel the differences and make selections firsthand.

Reliable Service

Count on competitive pricing, jobsite-ready deliveries, and skilled window replacement and installation if you need it.

Get a Quote Find a Location

Living area featuring Andersen multi-slide, glass-paneled doors with ocean view.

Andersen Multi-Slide Doors

PREMIUM WINDOW BRANDS

We carry the highest-quality windows from premium brands you know and trust.

Product availability varies by market. Contact your Builders FirstSource rep for details.

CENTRALIZED PROJECT MANAGEMENT

Use myBLDR to manage your project. You can track shipments, schedule deliveries, manage payments and more through your personalized dashboard.

PUT OUR TEAM BEHIND YOU

Gather window ideas from our featured vendors to bring your plans to life.

See how these builders saved time, reduced hassle, and lowered costs with our premium window services.

Let our team do the install for you and ensure your materials and labor are ready to go when you are.

HOW CAN WE HELP?

CUSTOM MILLWORK

We can bring any unique design idea to reality.
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GET INSPIRED

Sneak a peek at finished designs featuring top products.
Explore Designs

TALK TO AN EXPERT

Still have questions? Our team is here to help.
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FREQUENTLY ASKED QUESTIONS

ARE ALL WINDOW BRANDS AVAILABLE FROM EVERY BFS LOCATION?

Product availability can vary by market due to regional manufacturing, code requirements and climate considerations. BFS’s national footprint allows access to a broad range of window solutions, even when availability differs locally.

WHAT WINDOW MATERIALS ARE AVAILABLE?

Builders FirstSource supplies a full range of window materials, including vinyl, composite, wood, clad wood, aluminum and steel.

HOW DO I CHOOSE THE RIGHT WINDOWS FOR MY PROJECT?

The right windows depend on your design goals, performance requirements, budget and project timeline. Contact your BFS windows specialist for assistance in selecting the best materials.

WHAT PERFORMANCE RATINGS SHOULD I CONSIDER WHEN SELECTING WINDOWS?

Key factors include U-factor, solar heat gain coefficient (SHGC), air infiltration and structural ratings. These metrics affect energy efficiency, comfort and long-term performance. Builders and architects often require detailed performance data, while homeowners benefit from simplified comparisons.

ARE ALL WINDOWS WITHIN THE SAME MATERIAL CATEGORY EQUAL?

No. Quality can vary significantly within the same material. For example, wood windows range from entry-level products to fully custom systems designed for high-end homes. Understanding product differences is essential to avoiding performance or durability issues later.

DOES BUILDERS FIRSTSOURCE OFFER PROFESSIONAL WINDOW INSTALLATION AND/OR REPLACEMENT SERVICES?

In many markets, yes, BFS does provide professional installation and replacement services. Contact your local store or sales rep for information for your location.

HOW LONG DO CUSTOM WINDOWS TAKE TO MANUFACTURE?

Lead times vary by product type, material and manufacturer.

CAN BUILDERS FIRSTSOURCE SUPPORT WINDOW SPECIFICATIONS AND TECHNICAL DOCUMENTATION?

Yes. BFS can provide cut sheets, performance data and technical details to support architectural specifications and construction planning.

WHAT ARE “BIG DOORS” AND WHY ARE THEY OFTEN INCLUDED AMONG WINDOWS?

“Big doors” include multi-slide, bifold, lift-and-slide and pivot door systems. They’re included in the windows category because they’re engineered and specified as part of the building envelope, using the same glazing, performance ratings and installation standards as windows.

From a design and construction standpoint, big doors are treated as large architectural openings, not standard entry doors, and are typically selected alongside windows to ensure consistent performance and aesthetics.