Summit & Slate Roofing installs and repairs flat & tpo roofing across Downers Grove, from Tivoli Theatre on Main Street to Lyman Woods Nature Preserve. Downers Grove earned the nickname Village of Trees for a reason, and that canopy is the first thing we factor into a roof here. The mature oaks and maples shading streets around Denburn Woods and the Pierce Downer area keep north and west slopes damp long after a storm, which is why we see so much moss and black algae streaking on roofs that are otherwise sound. Before we quote a replacement, we tell you straight whether a soft wash and new slope drainage buys you years, or whether the deck underneath is already going.
Downers Grove sits in DuPage County's frost belt, where 100-plus annual freeze-thaw cycles work shingles loose and pry open old flashing. The village's heavy tree canopy keeps north-facing slopes shaded, so moss, algae streaking, and trapped debris hold moisture against the deck. Lake-effect and Alberta Clipper snow piles up at eaves, and shaded valleys are prime ice-dam territory. Summer brings derecho-grade straight-line wind and pea-to-quarter-size hail off the I-88 corridor.
What our Downers Grove flat & tpo roofing includes
Every Flat & TPO Roofing job in Downers Grove includes:
60-mil TPO membrane installation
We install 60-mil TPO as our standard, not the thinner 45-mil builders use to cut cost. The extra thickness handles foot traffic, hail, and ladder contact far better, and it carries a longer manufacturer material warranty on top of our 25-year workmanship coverage.
Hot-air welded seams
Every TPO seam is welded with a robotic or hand hot-air welder so the sheets fuse into one continuous surface. Welded seams are the single biggest difference between a flat roof that lasts and one that leaks. We never rely on seam tape or adhesive at the laps.
Tear-off of failed EPDM and built-up tar
We remove old rubber, tar-and-gravel, and mod-bit roofs down to the deck, replace any rotted sheathing, and check the slope before the new membrane goes on. Layering TPO over a failing roof traps moisture and voids warranties, so we tear off.
Tapered insulation and proper drainage
Standing water is the enemy of any flat roof. On dead-flat decks we add tapered polyiso insulation to build positive slope toward drains or scuppers, raising the R-value at the same time. This stops the ponding that shortens membrane life on Wheaton low-slope additions.
Flashing, curbs, and penetration detailing
Skylights, HVAC curbs, vent pipes, and wall transitions are where flat roofs leak first. We flash every penetration with TPO-coated metal and pre-molded boots, then weld them into the field membrane so there is no exposed sealant doing the work alone.
How much does Flat & TPO Roofing cost in Downers Grove, IL?
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Quoted from photos before work starts, the price you approve is the price you pay.