# The roof assembly has to match the actual conditions.

> Low-slope roof assemblies evaluated by deck, drainage, wind exposure, rooftop traffic, code documentation, and lifecycle goals.

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Commercial Roof Systems

Low-slope roof assemblies evaluated by deck, drainage, wind exposure, rooftop traffic, code documentation, and lifecycle goals.

[system fit Built-Up Asphalt Built-up asphalt still protects many older San Francisco buildings, and its redundant gravel-surfaced plies handle foot traffic well, so we assess the existing layers and flood-test the drains before committing to repair or replacement.](https://commercialroofingcontractorssanfrancisco.com/roof-systems/built-up-asphalt)[system fit EPDM Black Black EPDM is a proven, economical membrane for the Bay Area's mild climate, where modest thermal swings suit it, and we focus on the seams and flashings that age first when evaluating these roofs.](https://commercialroofingcontractorssanfrancisco.com/roof-systems/epdm-black)[system fit EPDM White White EPDM adds a reflective surface that helps with Title 24 compliance while keeping rubber's durability, making it a practical fit on sun-exposed Bay Area roofs we assess for substrate and seam condition.](https://commercialroofingcontractorssanfrancisco.com/roof-systems/epdm-white)[system fit Fleeceback TPO Fleeceback TPO's fabric backing boosts puncture resistance and bonds well over recovery boards, so it suits busy Bay Area roofs with rooftop traffic where we want a tougher, reflective single-ply assembly.](https://commercialroofingcontractorssanfrancisco.com/roof-systems/fleeceback-tpo)[system fit KEE Roof Systems Where grease, chemicals, or harsh UV would shorten an ordinary single-ply roof, a KEE system holds up far longer, which is why we reach for it on Bay Area buildings near restaurant or industrial exhaust.](https://commercialroofingcontractorssanfrancisco.com/roof-systems/kee-roof-systems)[system fit Modified Bitumen APP APP modified bitumen offers a tough, heat-welded multi-ply membrane suited to the ponding and foot traffic common on San Francisco low-slope roofs, and we confirm the fire and occupancy constraints before torch application.](https://commercialroofingcontractorssanfrancisco.com/roof-systems/modified-bitumen-app)[system fit Modified Bitumen SBS SBS modified bitumen stays flexible and forgiving, holding up to building movement and the redundancy that low-slope San Francisco roofs benefit from, and we can cold- or heat-apply it based on the occupancy below.](https://commercialroofingcontractorssanfrancisco.com/roof-systems/modified-bitumen-sbs)[system fit Modified Bitumen Roofing Systems in San Francisco Modified Bitumen Roofing Systems in San Francisco planning focuses on tenant protection, loading limits, and staging before system selection is priced.](https://commercialroofingcontractorssanfrancisco.com/roof-systems/modified-bitumen-systems)[system fit PVC Roof Systems PVC's hot-air-welded seams and chemical resistance make it a strong fit for the restaurants and rooftop kitchens common across San Francisco, and we verify the substrate and attachment before specifying a layout.](https://commercialroofingcontractorssanfrancisco.com/roof-systems/pvc-roof-systems)[system fit Silicone Roof Coating Silicone coatings shrug off the standing water that lingers on fog-shaded San Francisco roofs, restoring a sound but weathered membrane without a tear-off, provided the existing surface is clean and still structurally intact.](https://commercialroofingcontractorssanfrancisco.com/roof-systems/silicone-roof-coating)[system fit Spray Polyurethane Foam Spray polyurethane foam seals irregular roofs and adds insulation in a single pass, but on Bay Area buildings it only succeeds on a dry, clean substrate applied when the fog and dew point cooperate.](https://commercialroofingcontractorssanfrancisco.com/roof-systems/spray-polyurethane-foam)[system fit TPO 60 Mil Sixty-mil TPO gives a reliable, code-friendly reflective membrane for the wide low-slope roofs across the Bay Area, and we weld and detail the seams carefully so they hold through wind-driven winter rain.](https://commercialroofingcontractorssanfrancisco.com/roof-systems/tpo-60-mil)[system fit TPO 80 Mil Eighty-mil TPO adds extra thickness for the foot traffic and long-term durability that demanding Bay Area roofs need, keeping the reflective, Title 24-friendly surface while standing up to heavier rooftop use.](https://commercialroofingcontractorssanfrancisco.com/roof-systems/tpo-80-mil)