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System choices tied to membrane condition, drainage, insulation, warranty intent, and long-term maintenance.
Modified Bitumen SBS
SBS modified bitumen stays rubbery in the cold, an advantage through the region's freeze-thaw cycling, and can be cold-applied where an open flame is not allowed on an occupied building.
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Fleeceback TPO
A fleece-backed TPO bonds to the substrate with adhesive and resists punctures better than standard membrane, a sturdy pick for DC roofs that take regular service traffic.
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Built-Up Asphalt
Layered asphalt-and-felt roofs bring proven redundancy to heavy institutional decks around the capital, and their thick build tolerates foot traffic well, though they add weight a deck must be checked for.
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KEE Roof Systems
KEE-based single-ply keeps its plasticizers far longer than ordinary PVC, so it stays flexible and crack-resistant through years of Washington sun and chemical exposure.
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White EPDM
White EPDM marries rubber's cold-weather flexibility with a reflective surface, cutting summer heat gain while still flexing through the region's freeze-thaw swings on flat commercial roofs.
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Modified Bitumen APP
APP modified bitumen is torch-applied and forms a tough, UV-stable cap, suiting flat DC roofs that need a rugged surface able to handle maintenance foot traffic.
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TPO 80 Mil
Eighty-mil TPO adds thickness for roofs that see heavy foot traffic and hail, a tougher choice for DC-area buildings where rooftop service is constant and the membrane needs extra reserve.
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Silicone Roof Coating
A fluid-applied silicone coating renews a weathered roof in place, sealing seams and shrugging off the standing water that lingers on flat DMV roofs after a storm.
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Spray Polyurethane Foam
Where a flat DC roof is structurally fine but under-insulated and pooling, sprayed polyurethane foam is a retrofit that adds R-value and re-pitches drainage at once, then takes a silicone or acrylic topcoat to carry the UV and foot traffic.
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PVC Roof Systems
Hot-air-welded PVC creates monolithic seams that resist ponding water and rooftop grease, a dependable system for the restaurant and lab roofs common across the District.
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Black EPDM
Black EPDM rubber flexes through the DMV's freeze-thaw winters and ages predictably, making it a budget-friendly membrane where reflectivity is not the priority. Seam quality decides its real lifespan.
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TPO 60 Mil
Sixty-mil TPO is the everyday workhorse white membrane for DMV commercial roofs, balancing puncture resistance and cost while its welded seams and reflective surface fight the heat of a Washington summer.
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