About Masterjack Windows

For more than 25 years, Masterjack has been called on by local homeowners, builders and business owners to supply and install quality windows, doors and garage doors. We believe that no job is too big or too small. We can do anything from upgrading windows in modular homes, replacing windows in a 250 unit condominium building, supplying and installing windows and doors in new commercial office buildings, and replacing and installing storefronts in buildings. Masterjack can also handle all of your garage door needs.


In 2007, Masterjack was purchased by James Kyger, Jr., who also has owned and operated All States Construction Co., Inc. since 1979. One of the reasons behind the purchase was to be able to offer a full exterior envelope of a building or home.

Since being acquired by Jim, Masterjack has made an even bigger niche in the window, door and garage door markets, with projects such as Rivendell, Harbour Club, Ocean City Convention Center, Purnell House, all in Ocean City, and Henlopen Hotel in Rehoboth Beach. Our knowledge and experience working on condominiums, municipal buildings, hotels, shopping centers, homes, garages, etc. is endless.


The capabilities of Masterjack are virtually limitless. We continually stay up to date and current on the ever changing codes and regulations that occur on the Peninsula. And, to better serve the unique Eastern Shore market, we constantly increase quality by taking advantage of the new technologies for coastal environments.


Here at Masterjack, we believe that giving back to the community is just as important as any of our other activities. That is why, when working with us, you can be assured we are reinvesting in the local community.

Here is the list of some of the local charitable organizations we have helped throughout the years.

Member of:

  • Contractors for a Cause
  • Ocean City Parks & Recreation
  • Justin Jennings Foundation
  • American Cancer Society
  • Toys for Tots
  • Relay for Life

Windows & Sliding Patio Doors

Masterjack specializes in the new installation and replacement of vinyl, fiberglass, and aluminum windows and sliding doors for any application, including but not limited to, homes, condominiums or commercial buildings.

Another part of our window and sliding door division is the repair and maintenance of windows and sliders. We specialize in track, roller and other hardware replacement. We can also replace broken or damaged glass within a window or slider.


Masterjack also specializes in custom storefronts in commercial and municipal applications, including but not limited to shopping centers and hotels. We have completed projects all up and down the Peninsula.

Here is a list of some of the companies we use:

  • Boyd
  • Andersen
  • Pella
  • Traco
  • Gorell
  • CWS
  • Alliance
  • EFCO
  • Simonton
  • Citation
  • Arcadia