Welcome to Custom Windows Plus

Replacement Windows & Patio Doors in Wisconsin

Family Owned, Family Operated

Custom Windows Plus serves customers throughout Wisconsin by providing high-quality custom vinyl replacement windows and doors that stand up to the harshest weather.

If you’re looking for replacement windows, we manufacture and supply bay & bow windows, casement & awning windows, double hung windows, and slider windows to all of Wisconsin. We also supply standard, french and sliding replacement patio doors.

As a family-owned and operated business, we take a real and personal pride in providing superior products with world-class service…all at competitive prices.

Replacement Windows & Patio Door in Wisconsin


The entire staff of Custom Windows Plus has years of experience in helping people just like you choose the right window and/or patio door for every application. They know the many different variables that go into selecting a quality 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.


Top Ten Reasons to Choose Custom Windows Plus

  • Our window qualities include:
    • Virgin vinyl-maintenance free
    • Fusion welded corners
    • 3 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
  • Our installation qualities include:
    • 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
    • Better Business Bureau phone # (920) 734-4352
  • 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

When it comes to replacement windows and doors,
Wisconsin calls Custom Windows Plus. Call Today for a Free Estimate