Contact Us for a Free Estimate

Contact Us for a Free In-Home Estimate

We feature competitive pricing on all of our highly crafted products

Cornerstone Windows banner - Serving the South Bay for 25 years


Showroom Open

by Appointment Only

Please no drop-ins

Monday-Friday: 9:00am – 5:00pm
Saturday: 9:00am –5:00pm
Sunday: Closed

[email protected]
Call us: (310) 325-4700

At Cornerstone Windows, our expert estimators, office personnel, and installers are committed to providing skilled and satisfying service. We feature competitive pricing on all of our highly crafted products. Increase the beauty, value, security and improve energy efficiency of your home with new windows & doors. Please submit your contact form for a free estimate. We’re also available on weekends by appointment only.

Our Showroom

Cornerstone transforms homes with our large selection of:

  • Windows: High quality vinyl replacement windows
  • Folding & Multislide Patio Doors
  • Sliding and swinging patio doors
  • Garden Windows
  • Entry, Back, & Side Doors
  • French Doors

CONTACT US

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Name
Tony Szik's Cornerstone Doors & Windows, Inc., Door Installation, Torrance, CA