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Your Trusted Company for Replacement Windows in Northern Virginia

Welcome To The Window Center

ALLIED is a full service company specializing in the sale and installation of custom-built vinyl windows and doors serving all of the Northern Virginia area. The replacement windows Allied offers are proven to be the most efficient available at the most affordable price. Allied also provides Alcoa vinyl siding. and most recently, Hardie Board siding, to all Northern Virginia homeowners.

For three generations, Allied, The Window Center, has offered the same personalized, professional service that has helped make ALLIED unique. We are one of the oldest and most reliable companies in the industry, here in the Virginia metropolitan area of Washington, D.C

Our Secret Sales Trick

It is not much of a secret, because everyone knows good work speaks for itself.
Because of Allied's beautiful, energy-saving windows and doors, great prices, low pressure sales, and great service from beginning to end,

80 percent of our business comes from referrals and repeat customers!

Call us for a free estimate for replacement windows that fit every budget..

Why Choose Allied?

We have been installing high quality, yet affordable windows and doors in Northern Virginia for over 50 years! Hundreds of homeowners have praised our work in "Checkbook."

One client wrote, "Allied's integrity, competitive prices (without the high pressure & gimmicky sales pitches), and impressive line of energy efficient windows have made me and my neighbors a few of Allied's many repeat customers."

Most Recent Blog Posts

Thermal Windows in the news
See our window manufacturer Thermal Windows in the...
Increase the resale value of your home.
According to isoldmyhouse.com a $9,000 expenditure on new vinyl siding can bump up the asking price on a house by about $8000. That is a 89 percent...
Some of Our Recent Work
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Our Latest Reviews from Northern Virginia Homeowners!
"I researched several firms and the products they offered prior to making this choice. I could not be happier with the results. They installed a new...

Helpful Research Before Buying

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