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Replacement Windows:
- Vytex Windows
- Alside Windows
- CertainTeed Windows
- Gorell Windows
- Traco Windows
- WeatherShield Windows

Patio Doors:
- Alside Patio Doors
- Royal Patio Doors
- Vytex Patio Doors

Siding:
- James Hardie
- Alside Siding
- CertainTeed Siding
- Alcoa Siding


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Roofing:
- CertainTeed
- GAF
- Tamko
- Velux Skylights
- Wasco Skylights

Trim, Shutters, Vents:
- Azec Trimboards
- Fypon
- Koma Trimboards
- Mid America

Portico Construction

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CertainTeed Windows

CertainTeed Vinyl Windows are designed for value first. Whether for residential, institutional, or light commercial use, every feature – from the sash and frame to the balance system to the hardware and the glazing system – has been engineered, refined, and tested for decades of superior performance. Hallmark Windows and Siding has been installing CertainTeed High Performance Windows in Maryland, Northern Virginia and Washington D.C. for many years!

CertainTeed High Performance Vinyl Windows. . .
     

• Were pioneered in 1979 before any other vinyl window — no one in the country has been in the vinyl window business longer.

• Are the first choice of remodeling contractors and are the leading vinyl window for new construction.

• Are offered with exclusive Thermaflect® Low "E" glass that has the best U- and R-values of any double-glazed system available today — keeps homes cooler in summer, warmer in winter, and blocks 87% of UV rays.

• Are supplied by a network of local distributors assures fast delivery, responsive service, and support you can count on.

Hallmark Siding and Windows proudly installs the Bryn Mawr II in homes around Maryland, Washington DC and Virginia.

- Learn more about the Bryn Mawr II Series.
- Learn more about the Thermaflect LowE Glass System

Download CertainTeed Brochures:
- CertainTeed Bay & Bow Windows
- CertainTeed Casement Windows

- Brin Mawr II Series
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© 2008 Hallmark Windows and Siding, Inc. MHIC #49261 Potomac, MD 20814