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Our Services

As a premier flat roofing contractor in Washington, DC, we offer a comprehensive suite of services that cater to the diverse and often complex needs of our city’s architectural landscape. Fully licensed, certified, and insured, our expertise spans across five key areas:
Flat Roof Repair, Roof Replacement, New Roof Installation, and Roof Maintenance and Upkeep.

Flat Roof Repair & Waterproofing

Our repair services are exhaustive, addressing issues from wear and tear to improper installations. We specialize in four main types of repairs: Grade Changes & Continuous Flow for effective water drainage, Counter-Flashings & Spanning Metals to prevent water infiltration, Partial Overlays & Recoatings to enhance durability, and Proper Sealant Applications for a watertight seal. We are also adept at rectifying mistakes made by other contractors, ensuring your roof is in optimal condition.

​Roof Replacement or Overlay

For new constructions or major renovations, our new roof installations are designed to meet modern standards while respecting the architectural integrity of the area. We work closely with other building systems, including mechanical and photovoltaic energy systems, to ensure seamless integration.

When a roof reaches the end of its lifespan, we offer full replacement services. Our team conducts a thorough assessment to determine the best course of action, taking into account the unique challenges posed by Washington, DC’s historic buildings.

​Roof Upkeep and Consultations

Regular maintenance is crucial for extending the lifespan of your roof. Our maintenance services include regular inspections, cleaning, and minor repairs to prevent major issues down the line.

Washington, DC is a city rich in history, and many of its buildings are historic landmarks with flat roofs not initially designed for modern mechanical systems. This often requires us to coordinate with various building systems and assemblies, a task we are well-equipped to handle due to our extensive training and hands-on experience.

WHY DUPONT ROOFING LLC?

In summary, whether you’re dealing with a historic building or a modern structure, our services are tailored to meet your specific needs. From flat roof repairs to new installations, from replacements to regular upkeep, we offer a one-stop solution for all your roofing needs in Washington, DC. With our unparalleled expertise and commitment to quality, you can trust us to deliver exceptional results, every time.

SEE WHY WE ARE THE GO TO ROOFERS
FOR HISTORIC WASHINGTON, DC HOMES

Standing Seam Roof Penetrations - Part II

Standing Seam Roof Penetrations – Part II

Seam roof penetration tip This past week, we looked at examples of pipe penetrations through a standing seam metal roof. We also talked about some of the differences between other historic roof systems and standing seam roof systems. At this point in time, most of the standing seam roof system

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Standing Seam Roof Penetrations - Part I

Standing Seam Roof Penetrations – Part I

Standing Seam Roof Penetrations – Part I: Critical Challenges and Proven Solutions Today, we’re looking at a standing seam roof. Standing seam roofs are one of the many different types of roof membranes used here, at flat or low slope roofs, in Washington DC. There’s a wide range of different

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Surface Cracking at BUR Flat Roof Surface - Part II

Surface Cracking at BUR Flat Roof Surface – Part II

Advanced Insights on Surface Cracking at BUR Flat Roofs – Part II This past week, we started looking at a built-up roof covered with a significant amount of asphaltic mastic.  Here, when we say it was covered with a significant amount, we put some emphasis on the word significant, but

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