ROOFING
Gordon Contractors specializes in comprehensive roofing and decking solutions, providing stone/precast/porcelain pavers, IPE wood decking, gravel ballast systems, hot fluid‑applied roofing, single-ply systems and a range of green roofing options. The company is also an approved fabricator of sheet metal roofing systems, producing custom components such as cupolas, domes, gutters, copings, copper hoods, flashings, and decorative castings.
With a fully equipped in‑house sheet metal shop—including 13‑foot shears and breaks—Gordon Contractors delivers precise fabrication, replication of existing architectural elements, and custom metalwork without relying on subcontractors. Their trained specialists ensure quality craftsmanship on projects of any size, including museum‑grade work completed for institutions such as the Smithsonian, and the District of Columbia Convention Center.
Gordon Contractors serves as an approved contractor for leading roofing and waterproofing manufacturers, including Henry, Versico, GAF, W.R. Grace, Firestone, Manville, Carlisle, Owens Corning, Dow Chemical, Koppers and Sarnafil. Their metal roofing expertise extends to systems from Centria, Zip Rib, Follansbee, AEP Span, and PAC Clad. A single point of responsibility ensures consistent quality and accountability across every project.
GREEN ROOFING
Whether installing a new roof, re‑roofing an existing structure, or incorporating a partial green roof system, our expert installers deliver innovative, cost‑effective, and long‑lasting solutions. Every project—large or small—is completed with the same level of quality, precision, and industry knowledge that defines Gordon Contractors.
Gordon Contractors maintains one of the most extensive portfolios of green roof installations across Washington, D.C., Maryland, and Virginia. We have installed more high‑quality green roofing systems than any other roofing contractor in the region.
A green roof system is an engineered extension of the existing roof and typically includes a high‑performance waterproofing and root‑repellent system, drainage components, filter fabric, lightweight growing media, and vegetation. These systems may be designed in several formats:
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Modular systems — Pre‑assembled units containing drainage layers, filter cloth, growing media, and plants in movable, often interlocking grids.
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Pre‑vegetated mats — Rolled systems incorporating growing media, water‑retention fleece, drainage mat, and root barrier for efficient installation and easy roof access.
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Loose‑laid/built‑up systems — Components installed individually to create a fully customized assembly
Green roof development involves creating a contained vegetated space on top of a man‑made structure. This space may be located below, at, or above grade, but in all cases the plants are supported by engineered systems rather than natural ground.
Green roofs offer a wide range of public and private benefits, including improved stormwater management, enhanced energy efficiency, extended roof lifespan, and increased aesthetic and environmental value.
MAINTENANCE/REPAIR
Commercial Roofing & Waterproofing Repairs
Gordon Contractors provides expert commercial roofing and waterproofing repair services throughout the Washington, D.C., Maryland, and Northern Virginia region. Backed by our trained and trusted team of service professionals, we repair all major commercial roofing systems and below-grade waterproofing components. From active roof leaks and storm damage to flashing failures, expansion joints, sealants, and waterproofing deficiencies, we respond quickly to identify the source of the problem and deliver long-lasting repairs. Whether it's an emergency service call or a planned repair, our goal is to protect your building, minimize disruption, and extend the life of your roofing and waterproofing systems.
Annual Roof Inspection Programs
Prevent costly repairs and unexpected failures with our annual and semi-annual roof inspection programs. Our trained technicians perform comprehensive visual inspections, document existing conditions, identify developing issues, and recommend corrective action before small problems become major expenses. Every inspection includes a detailed report along with any recommended repairs to help you manage your roof assets with confidence.
Chemical Grout Injection
Water intrusion through concrete cracks can lead to structural deterioration, safety concerns, and operational disruptions. Gordon Contractors provides professional chemical grout injection services using hydrophobic polyurethane grout that expands upon contact with water to create a durable, watertight seal. This proven solution effectively seals leaking cracks, cold joints, pipe penetrations, and honeycombed concrete in foundations, parking garages, elevator pits, and other below-grade structures.
Protect Your Investment
A well-maintained roof is one of the most valuable investments you can make in your facility. Routine inspections, preventative maintenance, and timely repairs help maximize roof life, reduce unexpected costs, maintain manufacturer warranties, and protect your building from water intrusion. Whether your roof is new or decades old, Gordon Contractors has the expertise to keep it performing at its best.
WATERPROOFING
Gordon Contractors installs comprehensive waterproofing systems for a wide range of structural applications, including foundation walls, elevator pits, underslabs, property line walls, backfilled walls, plaza decks, shotcrete walls, and greenscape assemblies.
Tailored Systems for Every Project Requirement
We provide a full suite of high‑performance waterproofing solutions designed to meet the specific needs of any job, including:
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Fluid‑applied protected membranes — seamless protection for complex substrates
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Bentonite waterproofing — self‑sealing performance for below‑grade conditions
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Self‑adhering sheet systems — durable, consistent membrane installation
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Traffic coatings — engineered for vehicular wear and long‑term durability
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Pedestrian coatings — slip‑resistant, protective walking surfaces
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Silicone elastomeric coatings — weather‑resistant protection for vertical and horizontal surfaces
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Hot rubberized asphalt systems — robust monolithic waterproofing for demanding environments
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Expansion joint systems — maintaining continuity across structural movement points