Business Details
34 Years
experience
Emergency
services
Trusted Commercial Roofing & Building Restoration Experts in DC, MD & VA
Founded in 1992 by Greg Simpson, our company has established itself as a leader in commercial roofing and building exterior services. With over three decades of hands-on experience, we specialize in comprehensive solutions including roof replacements, masonry restoration, and emergency response services across Washington D.C., Maryland, and Virginia. Our approach combines technical expertise with a commitment to personalized service, ensuring every project meets the highest standards of quality and safety. We pride ourselves on maintaining long-term relationships with clients through transparent communication and reliable execution. Our team of certified professionals is equipped to handle projects of all scales, from minor repairs to multi-million-dollar developments. By staying at the forefront of industry innovations and best practices, we deliver durable, cost-effective solutions tailored to each client's unique needs.Our 24/7 emergency response capability ensures uninterrupted protection for commercial properties, while our preventative maintenance programs extend the lifespan of building assets. With a multicultural workforce averaging 15+ years of tenure, we combine institutional knowledge with fresh perspectives to continuously improve our services. Our certifications with major manufacturers guarantee compatibility and performance across all roofing systems. From initial consultation to project completion, we prioritize client satisfaction through meticulous attention to detail and adherence to timelines and budgets. This unwavering dedication has earned us the trust of 2,000+ satisfied customers over nearly 30 years of service.
Services
Commercial Roof Replacements
Roofing Repair and Maintenance
Masonry Restoration
TPO Roofing
PVC Roofing
EPDM Roofing
Modified Roofing
Fluid Applied Roofing
Roof Coatings
Built-Up Roofing
Details
- Year established: 1992
Highlights and features
- We offer 24/7 emergency response with rapid leak mitigation and detailed service reports
- Our team has 30 years of combined experience in commercial roofing and building restoration
- We provide comprehensive turnkey solutions from a single trusted contractor
- Our certified professionals maintain a perfect safety record across all projects
- We guarantee workmanship with 1-year warranties on all permanent repairs
What people say
Quality work
Skilled team
Excellent work
Exceptional customer service
Professional staff
Services
Commercial Roof Replacements
We specialize in complete commercial roof replacements including tear-offs, recover systems, and new construction. Our certified technicians install all major roofing systems including TPO, PVC, EPDM, and metal roofing. With compatibility certifications from leading manufacturers, we ensure optimal performance for shopping centers, high-rises, and industrial facilities. Our process includes comprehensive inspections and energy code compliance checks.
Roofing Repair and Maintenance
Our emergency response team provides 24/7 leak mitigation and preventative maintenance services. We offer recommended action programs for long-term solutions and perform routine inspections to preserve warranties. Services include membrane repairs, flashing restoration, and HVAC protection measures for commercial properties of all types.
Masonry Restoration
We restore building exteriors through comprehensive masonry services including concrete repair, sealant replacement, and facade restoration. Our experts handle brick, stone, and precast elements with solutions for water intrusion prevention and structural integrity reinforcement across commercial properties.
Emergency Roofing Services
Our 24/7 emergency team responds to critical roof failures with rapid leak containment and damage assessment. We provide immediate repairs, detailed service reports with photographic documentation, and follow-up recommendations for permanent solutions to minimize business disruption.
Preventative Maintenance
We implement proactive maintenance programs to extend roof system lifespans and maintain manufacturer warranties. Services include seasonal inspections, coating applications, and drainage system cleaning to prevent leaks and costly emergency repairs.
People
Greg Simpson
Founder
With a lifelong career in building repair, Greg Simpson founded the company in 1993 after working in all industry roles. He established the company's hands-on approach and commitment to comprehensive service solutions that remain core to our operations today.
Questions
What commercial roofing services do you offer?
We provide full-service commercial roofing including replacements, repairs, maintenance, and emergency response. Our expertise covers TPO, PVC, EPDM, metal roofing, and modified bitumen systems.
Do you offer 24/7 emergency services?
Yes, our dedicated emergency team responds 24/7/365 with rapid leak mitigation and comprehensive repair solutions for commercial properties.
Which areas do you serve?
We operate throughout Washington D.C., Maryland, and Virginia metropolitan areas, covering commercial properties in all major business districts.
What warranties do you provide?
We offer 1-year workmanship warranties on repairs and manufacturer warranties for new installations, with extended coverage options available for select systems.
Can you handle large-scale projects?
Yes, our team manages projects from basic repairs to multi-million-dollar developments, with capacity to handle complex commercial roofing and restoration requirements.
Reviews (6)
Stephanie Deoudes
Aug 28, 2021
Report
Simpson's work has been consistently excellent. Their roof inspections and repairs have resolved many long standing problems with no call backs or leaks after service. Their work on our balcony project was efficient, complete and well done. Again, no call backs or issues after their service. I look forward to calling on Simpson when needs arise as I know their work is excellent. I called on them because of their excellent work on another project I managed, with same good results.
Alan
Apr 02, 2021
Report
Had 3 roofing companies come out, could never find my leaks. Has these guys out and in less than 2 days found the leaks and fixed them. Needless to say, I will be using them again and again. Service: Roof inspection
Emmanuel Rendon
Dec 06, 2020
Report
They did a great job painting the exterior of a building I manage. They communicate well and were always professional. The quality of work was excellent. I would definitely recommend Simpson Unlimited.
Crystal Dionne
May 13, 2020
Report
I am sharing this review outside of the company I work for and reflects my views and my views only. We hired Simpson for the work at TVAR Glenmere in Rockville. Scope of work was paver installation and green roof installation. I worked most closely with Matt in the office. The crews were kind and polite, as was Matt. I had no issues with paperwork or quality of installation of work, including material suggestions. I would work with them again.
Chris Keen
Apr 25, 2020
Report
Simpson Unlimited has been my sole roofing contractor for over 10 years at multiple commercial building properties. They are always prompt with their pricing when a job requires a pre-approval. They always do quality work and their guys always skilled. They always show their me the repairs that were made and always clean up after themselves. I have come to know most of the guys by name. I use Simpson unlimited solely because I know I can rely on them to do the job right. I trust them enough that I have them do the inspections and repairs of all my roofing.
Larry Chernow
Apr 16, 2020
Report
I have been working with Simpson Unlimited for well over 20 years and they have always been professional from beginning to end of every job. Their quality of work is always outstanding. They make ever effort to make sure the job has been completed right the first time. Prices are very competitive and are a pleasure to work with.
