Certified Window Co. is proud to be your vinyl replacement window installation specialist in
Annandale, VA

Certified Window Co. can help Increase the value of your Annandale, VA home with energy-efficient vinyl replacement windows from one of the leading manufacturers. Heavy-duty construction, insulated glass, and a vinyl finish that never needs painting are standard features on all our window products.

With replacement vinyl windows – you have the perfect combination of style, simplicity and elegant design that clearly indicates how much you care for your home. Vinyl replacement windows installed by Certified Window Co. will let in more natural light and make a bold statement that will add character and life to any room.

Windows are one of the weakest points in the exterior envelope of your home. This makes them a thermal hole and about 30 percent of energy expenses are lost through your old, worn out windows. Vinyl, as a construction grade plastic, is a natural insulator. Vinyl windows keep heat in during winter and out during summer. This reduces heating and air conditioning usage for lower energy bills.

Vinyl window frames are made of polyvinyl chloride (PVC) with ultraviolet light (UV) stabilizers to keep sunlight from breaking down the material. Vinyl window frames do not require painting and have good moisture resistance. The hollow cavities of vinyl frames can be filled with insulation, which makes them thermally superior to standard vinyl and wood frames.

Vinyl isn’t just energy efficient. They also:

• Won’t scratch, fade, or discolor
• Are easier to clean and maintain
• Won’t warp from heat or moisture
• Do not rot or get infested
• Have more affordable pricing

Vinyl window replacement is our specialty. If you have old aluminum windows, it may be time to replace your windows. Vinyl windows are much better than aluminum because they are more energy efficient and require less maintenance.

Mezzo® Windows from Alside feature an optimized frame and sash with dual pane insulated glass that’s designed to meet the most stringent ENERGY STAR® requirements. Alside vinyl windows are elegant and their construction ensures maximum daylight visibility as well as dependable strength.