ROOFING, SIDING, WINDOWS, DECKS & DOORS IN DC, MD & VA | CAPITOL IMPROVEMENTS
Capable. Experienced.
Fair to you.
We’re a family owned and family run team who are consistently as the top-rated roofing and siding contractors in our class for replacement roofing, flat roofing, siding, windows, gutters, exterior trim, decks, flagstone patios, and doors. We provide quality products, expert installation, and lifetime manufacturer backed warranties. All for a fair price.
See our servicesHIGHLY CERTIFIED WITH INDUSTRY LEADERS
Open Mon–Sat, 9am–7pm
Serving Maryland, Washington DC, and Northern Virginia
Expert Roof, Siding, Window & Door Installation Services in MD, DC & VA.
We provide residential roofing, siding, windows, gutters, exterior trim, decks, patios, and doors all over Maryland, Northern Virginia and Washington DC.
Capitol Improvements Roofing & Siding Contractors is a family-owned and operated business. Our headquarters is located in Bowie, MD, with other locations in Gaithersburg, MD, Washington, DC, and Crownsville, MD.
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A lifetime warranty requires a lifetime of training.
We meet the highest standard in continual training to offer you manufacturer backed warranties for your home. All of our services include a limited or transferrable lifetime warranty.
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Financing made easy.
You won't pay a dime until the project is completed, with payments as low as $99/month.1 Getting approved is quick and easy.
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TRUSTED BY THOUSANDS OF LOCAL HOMEOWNERS
“My husband and I met with Pat Jewell and he was such a pleasure to work with. Very knowledgeable and kind. We felt comfortable with this company.”
Karen, Google Review
“They had the most competitive prices and did not try and upsell. Their teams are efficient, professional, very clean, and on time.”
Veronica, Google Review
“My roof sprung a leak during the peak of the pandemic. The team at Capitol Improvements worked with me to find a solution that worked including having to work around supply chain issues for critical materials etc. Their office staff, roofing team and management could not have been nicer or more responsive.”
Kelly, Google Review
📍Over 7,240 Homeowners Across MD, DC & VA Have Turned to Us for Installations, Advice & Product Expertise.
This map shows more than 7,240 homes where we've made an impact—whether it was a full roof replacement, new siding, energy-efficient windows, or simply providing honest advice. For every person we serve we bring a deep knowledge of local building codes, HOA requirements, and the right materials for the job.
As one of the BEST most experienced roofing, siding, window & door companies in Maryland, DC, and Northern Virginia, we’re proud to be the trusted choice for real solutions, not sales pressure. Homeowners turn to us for answers—and stay with us for quality work that lasts.
