Business Details
33 Years
experience
Emergency
services
Expert Roofing Services in Washington DC
CJ Roofing LLC has been a trusted name in Washington DC's roofing industry for over three decades. As a family-owned and operated business, we combine generational expertise with a commitment to quality craftsmanship and exceptional customer service. Our team specializes in flat roofs, slate roofs, and modified bitumen installations, serving all neighborhoods across the District of Columbia. With certifications from Certainteed and recognition as Master Craftsmen, we maintain rigorous industry standards while prioritizing transparency in every client interaction. Our approach focuses on honest assessments, recommending repairs when appropriate rather than unnecessary replacements. We serve the entire 61.05 square miles of Washington DC, including Capitol Hill, Georgetown, Glover Park, and Chevy Chase, while maintaining exclusive focus on our local market by forgoing operations in neighboring states. Our reputation as a top-rated contractor is built on consistent service excellence, reflected in our numerous industry awards and positive customer reviews.
Services
Roof Repairs
Roof Replacement
Roof Coatings
Flat Roof Specialists
Slate Roof Repairs
Details
- Year established: 1993
Highlights and features
- Flat Roof Repair
- Flat Roof Coatings
- Shingle Roof Repair
- Slate Roof Repair
- Metal Roof Repair
- Skylight Repairs
- Re-roof
- Rubber Roof
- Modified Bitumen
- Epdm
- TPO
- Shingles
- New Gutters of all styles
- Skylight Installation
- Install gutter guards
- Basement waterproofing
- Roof Replacement
- New roof
- Roof Repairs
- Roof Coatings
Associations and certifications
- Certainteed Master Craftsmen
What people say
Top rated roofer
Excellent service
Professional team
Honest assessments
Quality workmanship
Services
Roof Repairs
We provide comprehensive roof repair services for all materials including flat roofs, slate roofs, and asphalt shingles. Our expert technicians address leaks, storm damage, and structural issues while prioritizing cost-effective solutions. With 30 years of experience in Washington DC's unique architectural landscape, we ensure lasting repairs that maintain your roof's integrity and extend its lifespan.
Roof Replacement
Our full roof replacement services cover asphalt shingles, slate, and modified bitumen systems. We remove old materials, inspect decking, and install new waterproof membranes according to manufacturer specifications. Specializing in both residential and commercial properties across DC, we offer energy-efficient options that enhance property value while maintaining structural integrity.
Roof Coatings
We apply specialized roof coatings including silicone, acrylic, and fibered aluminum to extend roof lifespan. These reflective coatings reduce energy costs by lowering rooftop temperatures while protecting against UV damage and water intrusion. Our application process ensures complete coverage that meets manufacturer warranty requirements for both flat and sloped roofing systems.
Flat Roof Specialists
As DC's leading flat roof specialists, we offer tailored solutions for modified bitumen, EPDM, and TPO systems. Our services include leak detection, membrane repair, and complete system replacements. We implement proper drainage solutions and protective coatings to address common flat roof challenges while ensuring compliance with local building codes.
Slate Roof Repairs
Our certified technicians provide expert slate roof repairs and replacements using authentic materials. We maintain historic integrity while addressing cracked or missing slates, deteriorated flashing, and underlayment issues. With specialized knowledge of DC's historic neighborhoods, we preserve architectural character while ensuring modern waterproofing standards for long-lasting protection.
People
Charles Johnston
Owner
Third-generation roofer with 30 years of DC-specific experience. Leads operations while maintaining hands-on involvement in complex projects. Committed to community engagement and quality craftsmanship.
William Johnston
Co-Owner
Second-generation DC roofer with expertise in slate and flat roof systems. Manages client relations and project oversight. Shares family commitment to honest assessments and lasting customer relationships.
Questions
What roofing services do you offer in Washington DC?
We provide roof repairs, replacements, coatings, and maintenance for all roof types including flat roofs, slate roofs, and asphalt shingles across Washington DC.
Do you offer free estimates?
Yes, we provide free written estimates for all roofing projects with transparent pricing and no hidden fees.
Which areas of DC do you service?
We serve all Washington DC neighborhoods including Capitol Hill, Georgetown, Glover Park, and Chevy Chase within our exclusive service area.
Are you available for emergency roof repairs?
Yes, we offer 24/7 emergency services for urgent roof leaks and storm damage throughout the DC area.
What certifications do you hold?
We are certified Certainteed Master Craftsmen with recognition for quality workmanship and industry excellence.
Do you offer military or first responder discounts?
Yes, we provide a 5% discount for active duty, retired military personnel, and first responders on all roofing services.
Reviews (6)
Jeff V.
Jun 05, 2022
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Had my 90 year old slate roof removed due to constantly needing repairs and the slate deterioration. Had it replaced with asphalt shingles and it looks great
Sarah Cousins
Jun 05, 2022
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Charlie helped me out by fixing the leak in my roof right before this massive storm hit. It was an emergency repair and he said it needed to be replaced for a permanent fix. Its holding up so far so fingers crossed
Martha Wright
Jun 05, 2022
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We were looking for a roofing contractor to coat our roof because the realtor recommended we do it based on the inspection report from when we bought our house last year. Since we are new to Washington DC we didnt know a roofing company to use, but we found CJ Roofing on Nextdoor and they worked out great!
Robert McDougal
Jun 05, 2022
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Had a leak that just kept coming back after several different roofing companies attempted to patch it. Called CJ Roofing and they recommended replacement. I figured they knew what they were talking about so I went with the new roof and Im very satisfied with the whole process.
Kevin Glenn
Jun 05, 2022
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I had several leaks in my roof. Two were in the slate roof on the front of my home and on was a leak in the flat roof. I had tried to fix the leak in the flat roof a couple times but the leak in the slates was new. Two other roofers tried selling me on a complete replacement, but the options were either pay a small fortune for a new slate roof or replace the roof with asphalt shingles, and I didnt think that would look right on a home as old as mine.
I was determined to keep my slates, so when CJ said he could fix the leak without having to install a new roof I was thrilled. The leak in the flat roof was also repaired and I havent had a problem since. I would recommend this company to all my neighbors and family. Great job
I was determined to keep my slates, so when CJ said he could fix the leak without having to install a new roof I was thrilled. The leak in the flat roof was also repaired and I havent had a problem since. I would recommend this company to all my neighbors and family. Great job
Paolo Petragnani
Jun 05, 2022
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CJ Roofing replaced my mansard front roof with architectural asphalt shingles on a rowhouse in NW Washington DC. They responded quickly and finished the work in a few hours. Very happy with the result. The owner Charlie was very helpful through the whole process. Highly recommend!