Replacement Windows & Patio Doors

Family Owned & Operated, Serving Wisconsin Since 2007

Custom Windows Plus, LLC serves customers throughout Wisconsin by providing high-quality custom replacement windows and patio doors that stand up to the harshest weather.
If you’re looking for replacement windows, we supply bay windows, casement windows, awning windows, double hung windows, and slider windows to all of Wisconsin. For our patio doors, we provide sliding, french, and terrace patio doors.
As a family-owned and operated business we take a real, personal pride in providing superior products with world-class service all at competitive prices. If you’re interested in quality vinyl craftsmanship, extra curbside appeal, and energy savings – please contact us today.
Custom Vinyl Replacement Windows Made Just For Your Wisconsin Home


The entire staff of Custom Windows Plus has 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 many 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 replacement products.


Ten Reasons to Choose Us

  • 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
    • Slider windows have bearings
    • 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
  • Quality Installations
    • Expert installers; our installers are paid hourly, NOT piece rate
    • Expanding foam wrap
    • Highest quality silicone caulk
  • Accredited member of the BBB
    • Always check with the Better Business Bureau for a reputable business
  • Family Owned and Operated
    • Not a franchise
  • One-Stop Shop
    • This means NO warranty hassles, ever!
  • Transferable Warranty
  • Quick Lead Time
    • Gets your windows in sooner
  • Fast installation
    • Most of our installations are completed in one day
  • Windows are fitted to the nearest 1/8”
    • Not to the nearest 1/4” like some of our competitors
  • Home Performance
    • We are partnered with ENERGY STAR