Flat and low-slope roofs in Naperville
Low-slope roofs sealed with the right membrane and drained so water doesn't sit.
Shingles need slope to shed water. On a flat or low-slope roof, like a porch, an addition, a garage or a commercial building, water moves slowly, so the roof has to be one continuous membrane. We install and repair TPO, EPDM rubber and modified bitumen, and we'll tell you which one fits your roof and why.
Most flat roof leaks come from three places: seams, flashing at walls and edges, and openings like vents and drains. Ponding water makes all of them worse. When we look at a flat roof we check drainage first, because a membrane that sits under a puddle for days won't last.

What's included
- TPO, EPDM and modified bitumen roofs
- Seam and flashing repair
- Drain, scupper and edge metal work
- Tapered insulation to fix ponding
- Roof coatings where the membrane is still sound
Call us when
- Water is still standing two days after rain
- You see bubbles or blisters in the roof surface
- Seams are lifting or flashing is pulling off the wall
- There are ceiling stains near an outside wall
Questions people ask
Don't see yours? Call (630) 555-0128.
Can a flat roof be coated instead of replaced?
Sometimes. A coating works when the membrane is in decent shape and dry underneath, and it can add years. It doesn't work over wet insulation or failed seams. That only traps the problem. We check for trapped moisture before we recommend either one.
Is a little standing water normal?
Small puddles that dry within a day or two are common and usually fine. Water that sits longer than 48 hours means the roof isn't draining, and that wears out the membrane early. The fix might be clearing a drain or adding slope with tapered insulation.