Get the Most Efficient Windows On The Market

Our custom-made replacement windows are made to order and unlike anything out on the market. With a .20 U-Value, these are rated as some of the most efficient windows by Energy Star. The modern insulation of these windows will keep both hot and cold air in your home where it belongs.

You’ll be able to choose from a variety of styles that will add brightness and beauty to your home. With customized sizes and shapes to fit even the most original homes, our window installation contractors have the skills to bring new life to your windows.

If you want to do something really interesting with your home, add side lights, custom transoms and decorative grids to express your unique taste. Replacement windows also accentuate your home’s architectural style. We install our windows to VinylMax manufacturer specs. Save money on energy bills with our Vinylmax replacement windows.

Capitol Improvements is one of the most trusted window replacement contractors in Bowie, Maryland serving the District of Columbia, Maryland and Northern Virginia. MHIC 130628. Get your Fast & Free Roof Quote Today!

    Why Choose Us?

    Award Winning Service

    When you work with us, you get personalized service that has won numerous awards. People love us on Yelp, Angie's List Super Service Award Winner, BBB A+ Rating, and 4.9 out of 5 Stars on Google.

    Most Efficient Window of 2018

    Our vinyl replacement window was rated the "Most Efficient Window of 2018" by Energy Star.

    30+ Years Experience

    Over the past 30+ Years Pat has built the best team in DC, MD, and VA. This experience has given us the ability to give you personalized service while still providing you with all the benefits of hiring a big company (Manufacturer Warranties, Financing, Dedicated Service Staff, etc).

    What are you waiting for?

    Get your free window quote today!