# Commercial Roof Systems

> Commercial roof systems in Seattle, WA: TPO, PVC, EPDM, modified bitumen, metal, and coatings, with guidance on repair, replacement, and upkeep.

Canonical: https://commercialroofersseattle.com/roof-systems

System choices are shaped by the existing assembly, drainage, insulation, attachment, code needs, rooftop traffic, and ownership goals.

[**Built Up Asphalt***Built-up asphalt layers multiple plies into a heavy, redundant membrane, and on older downtown Seattle roofs we evaluate whether the existing gravel-surfaced system can be repaired, recoated, or is ready for replacement.*](https://commercialroofersseattle.com/roof-systems/built-up-asphalt)[**EPDM Black***Black EPDM is a proven rubber single-ply that handles freeze-thaw and resists weathering, making it a sound, economical choice for Eastside and higher-elevation Seattle-area roofs where reflectivity matters less than durability.*](https://commercialroofersseattle.com/roof-systems/epdm-black)[**EPDM White***Reflective white EPDM keeps rubber's flexibility while cutting rooftop heat, a useful option for Seattle buildings that want cool-roof benefits during our limited summer sun without sacrificing the membrane's freeze-thaw resilience.*](https://commercialroofersseattle.com/roof-systems/epdm-white)[**Fleeceback TPO***Fleeceback TPO bonds a fabric backing to the membrane for added puncture resistance and adhesion, a robust single-ply for Seattle roofs with foot traffic or irregular substrates that benefit from a fully adhered system.*](https://commercialroofersseattle.com/roof-systems/fleeceback-tpo)[**KEE Roof Systems***KEE membranes deliver PVC-grade chemical and weld strength while staying flexible in our cool, damp air, a durable single-ply for Seattle restaurants and plants exposed to grease or aggressive rooftop emissions.*](https://commercialroofersseattle.com/roof-systems/kee-roof-systems)[**Modified Bitumen APP***APP modified bitumen uses a plastic-modified asphalt that torches down into a tough, UV-tolerant surface, a dependable multi-ply option for Seattle roofs needing redundancy and proven performance through long, wet winters.*](https://commercialroofersseattle.com/roof-systems/modified-bitumen-app)[**Modified Bitumen SBS***SBS modified bitumen adds rubber polymers for cold-weather flexibility, so it stays workable and crack-resistant in Seattle's cool climate, making it well suited to roofs that see temperature swings and foot traffic.*](https://commercialroofersseattle.com/roof-systems/modified-bitumen-sbs)[**Modified Bitumen Roofing Systems in Seattle***Modified Bitumen Roofing Systems in Seattle decisions are matched to Seattle roof age, moisture history, energy-code needs, equipment layout, and repair history.*](https://commercialroofersseattle.com/roof-systems/modified-bitumen-systems)[**PVC Roof Systems***PVC's hot-air-welded seams form a monolithic, chemical-resistant membrane that handles grease and ponding, a reliable single-ply for Seattle restaurants and industrial roofs where our frequent rain lingers on flat decks.*](https://commercialroofersseattle.com/roof-systems/pvc-roof-systems)[**Silicone Roof Coating***Silicone coatings excel where water ponds because they resist standing moisture far better than most products, restoring and extending sound Seattle membranes while sealing seams against the region's persistent rain.*](https://commercialroofersseattle.com/roof-systems/silicone-roof-coating)[**Spray Polyurethane Foam***Spray polyurethane foam delivers a seamless, insulating membrane in one application, ideal for irregular Seattle roofs, though it must be installed during a dry, low-humidity window our damp climate rarely offers.*](https://commercialroofersseattle.com/roof-systems/spray-polyurethane-foam)[**TPO 60 Mil***Sixty-mil TPO is the dependable everyday single-ply for Seattle low-slope roofs, welding into watertight seams and reflecting heat at a thickness that balances durability and cost for most commercial buildings.*](https://commercialroofersseattle.com/roof-systems/tpo-60-mil)[**TPO 80 Mil***Eighty-mil TPO adds thickness for high-traffic or harsh-exposure roofs, giving Seattle buildings extra puncture resistance and a longer service life where rooftop activity or equipment puts heavier demands on the membrane.*](https://commercialroofersseattle.com/roof-systems/tpo-80-mil)