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Quantam Windows and Doors

Quantam Windows and Doors

Handcrafting custom architectural wood, clad and steel fenestration for discerning architects, builders and homeowners. From design innovation to fabrication, Quantum takes an amazingly interactive approach to producing some of the best windows and doors in North America.

Who We Are

Quantum is a throwback to a time when people "crafted" products and demonstrated a vested interest in their work. Quantum was founded in 1982 as a response to the industry's demand for better built custom wood windows. Quantum's founders were general contractors dissatisfied with the mass produced windows available.

From humble beginnings in a general contractor's garage Quantum has become a national leader in the custom residential and commercial fenestration industry.

What We Do

As an industry leader, Quantum sets the standard for others in architectural fenestration. Our products appear in award winning, internationally acclaimed projects. Our name has become synonymous with luxury and sustainability.

From design innovation to fabrication, Quantum has developed a national reputation for handcrafting the finest custom architectural windows and doors. Blending contemporary production techniques with intensive hand detailing, Quantum satisfies both industry demands and client vision.

Our Products


  • Signature Series Windows
  • Classic Series Windows
  • Legacy Series Windows
  • Euro Series Windows


  • Hinged & Pivot Doors
  • Lift & Slide Doors
  • Slide & Fold Doors

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Happy Clients & Vendors

Testimonial by Roesner Building & Design

I initially hired Tim Bradshaw from Associated Building Supply to supply windows and components for a high end remodel in Carmel. He was a true professional, and made what could have been a troubling hybrid door & window install flow seamlessly.

In the years since that project, I have used Tim & Associated Building Supply to provide doors and windows for several other projects. He has consistently surpassed and exceeded all of my expectations, and I highly recommend him.

Roesner Building & Design | Project Date: January 2013 | Project Price Range: $50,000-$100,000 [Review on Houzz]

Your local supplier statewide

Oxnard • Torrance • Costa Mesa • Truckee • Burlingame • San Jose • Santa Rosa • Dublin