Denco Windows carries a wide range of replacement windows including: Double Hungs, Sliders, Casements, Picture Windows, Awnings and Storm Windows. Denco Also carries Entry Doors, Storm Doors, and Sliding Patio Doors.


244 Info Hwy
Slinger, WI 53086


  • With almost a decade of experience, we are not an upstart company who is just starting to learn on your house - unlike franchised window companies' who hire subcontractors to do the work, who have little to no experience and may not be in "business" from one year to the next.
  • We install windows one house at a time. When we start your house, we finish it without trying to do many different jobs at the same time. This leaves our customers happy and the job complete.
  • Written references at your request.
  • If, God forbid, anything unfortunate should happen on the job, we have business liability and workers compensation on all of our employees so there is no hassle for you.
  • We use quality materials and equipment from places like Reynolds, Richards Building Supply, and Bird Ladder.
  • We are members of the West Bend Area Chamber Of Commerce, the Menomonee Falls Area Chamber Of Commerce , and the Better Business Bureau .
  • We are state and city licensed.
  • We make sure that whether we are working inside or outside of your home, proper care is taken to insure that we do not damage or destroy your home or the contents inside of it (woodwork, furniture, plants, bushes, flooring, etc.).
  • We offer different window options that will help suit the needs of our customers, such as:
    • Storm Windows
    • New Construction/ Replacement
    • Wood Windows
    • Vinyl Windows

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