TPO, EPDM and modified bitumen flat roofing systems with proper drainage design and full watertight guarantees.
Flat and low-slope roofs — common on additions, porches, garages, and commercial buildings — fail almost exclusively for one reason: standing water. Without correct slope and drainage design, even a perfectly installed membrane will eventually fail at ponding points. Icon Roofing Group installs TPO, EPDM, and modified bitumen systems with drainage as the starting point of the design, not an afterthought.
We inspect the existing substrate and slope, identify any ponding areas from prior rain, and recommend a system — TPO, EPDM, or modified bitumen — based on your roof's specific drainage situation and use. Installation includes substrate preparation, insulation where applicable, membrane installation with heat-welded or properly adhered seams, and careful flashing detail at every penetration, drain, and edge, since these transition points are where flat roofs most commonly leak.
Flat roofs rely entirely on slight slope and drainage design to move water off, since gravity does far less of the work than on a pitched roof. When drainage isn't designed correctly, water ponds and finds any weak point in the membrane over time — which is why we treat drainage assessment as the first step, not the last.
TPO and EPDM systems typically last 20-30 years with proper installation and maintenance, while modified bitumen ranges from 15-20 years. Actual lifespan depends heavily on drainage quality and how much foot traffic or debris accumulation the roof sees.
TPO is a reflective, heat-weldable single-ply membrane that's become the most common choice for its energy efficiency and seam strength. EPDM is a durable rubber membrane, typically black, with a long track record and strong resistance to UV and weathering. We'll recommend the better fit based on your roof's specific conditions.
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