Quick Estimate

Quick Estimate


Replacement Windows
& Patio Doors

Custom Windows Plus

Family Owned & Operated
Serving Wisconsin Since 2007

Custom Windows Plus, LLC serves customers throughout Wisconsin by providing high-quality custom vinyl replacement windows and patio doors that stand up to the harshest weather, increase curb appeal, and stand the test of time.

If you’re looking for replacement windows, we supply bay windows, casement windows, awning windows, double hung windows, and slider windows. For your exterior door needs, we offer three types of patio doors: sliding, french, and terrace patio doors.

Experience Applied With Integrity

Our staff has many years of experience in helping people just like you choose the right custom replacement window and/or patio door for every application.

They know the different variables that go into selecting a quality custom replacement window or door, and they understand how to explain the differences in a manner that provides peace of mind when making a final selection.

Our installers treat your home as if it were their own, paying special attention to all the little details that make such a huge difference in the interior and exterior appearance of your windows & doors.

We take a real, personal pride in providing you superior windows with world-class service, all at competitive prices. If you’re interested in increasing the comfort level in your home & lower your energy bill, please contact us today!

Why Custom Windows Plus?

10 Great Reasons to Choose Us

1. Quality Custom Windows

  • Virgin Vinyl is Maintenance-Free
  • Fusion-welded corners
  • Three coats of Low E & Argon gas
  • Tilt-in for easy cleaning on Sliders & Double Hung
  • Top-of-the-line dual locking mechanisms
  • Patented warm edge spacing technology
  • Self-cleaning glass available is an affordable option
  • Drain holes in all windows
  • 100% Made in the USA

2. Quality Installations

  • Expert installers; our installers are paid hourly, NOT piece rate
  • Expanding foam wrap
  • Highest quality silicone caulk

3. Accredited Member of the BBB

4. Family Owned and Operated

  • Not a franchise

5. One-Stop Shop

  • This means NO warranty hassles, ever!

6. Transferable Warranty

7. Quick Lead Time

  • Gets your windows in sooner

8. Fast installation

  • Most of our installations are completed in one day

9. Windows Fitted to Nearest 1/8”

  • Not to the nearest 1/4” like some of our competitors

10. Home Performance

  • We are partnered with ENERGY STAR