Flat roofs on Troy additions and garages often fail from ponding water that turns to ice during freeze-thaw cycles, lifting seams and forcing moisture under the membrane. Mature trees along Rochester Road Corridor and Big Beaver drop debris that clogs drains, while strong winds tear at edges near the Somerset Collection area. Homeowners in subdivisions with HOA rules frequently discover curling or failed modified bitumen after the second or third layer has been left in place.
We start every flat roof replacement with a deck inspection that checks for rot around valleys and pipe boots, then perform a full tear-off to expose the substrate. New ice and water shield goes down at all perimeters and penetrations before the chosen membrane is installed with proper step flashing and ridge vent integration where the flat section meets sloped roofing. Soffit intake is verified to maintain airflow and reduce future ice dam risk.
Southeast Oakland County winters combine heavy snow load with sudden thaws that drive water under old EPDM or modified bitumen seams. We address this by removing every layer down to the decking, replacing damaged sections, and adding upgraded underlayment that handles both wind-driven rain and hail common near Oakland Mall and Troy Historic Village.
Technician insight
In Troy, the thing that catches most people out with flat roof replacement is discovering the deck has rotted under three layers of old modified bitumen right where the flat section meets the house wall. Freeze-thaw cycles along the Rochester Road Corridor push water under seams faster than homeowners expect, especially on 1970s ranches with limited slope.
Addition Flat Roof After Ice Dam
Water entered a 1980s colonial addition near Somerset after repeated ice dams lifted the old EPDM seams. We found saturated decking under two prior layers. After complete tear-off and deck repair we installed new modified bitumen with upgraded perimeter shielding. The homeowner reported no further leaks through the next winter.
Flat Roof Replacement Services We Offer
✓EPDM Membrane Replacement
Full removal and new EPDM installation that seals seams against ice dam pressure and wind uplift common on Troy flat sections.
✓Modified Bitumen Flat Roof Replacement
Torch-down or self-adhered modified bitumen systems installed after complete tear-off to handle repeated freeze-thaw movement on local additions.
✓TPO Roof System Installation
Heat-welded TPO membrane applied over new underlayment to reflect heat and resist ponding water in southeast Oakland County subdivisions.
✓Drainage and Gutter Integration
Re-sloping and new leader lines added during replacement to move water away from flat areas before it reaches soffit intake or foundation.
✓Deck Repair During Tear-Off
Replacement of rotted or damaged decking discovered once layers are removed, preventing future leaks around step flashing and valleys.
How it works
- 1
On-Site Assessment
We examine membrane condition, check for granule loss or seam separation, and note how many layers exist before any work begins.
- 2
Complete Tear-Off
All existing roofing is removed down to the deck so we can inspect for rot and install fresh ice and water shield at every critical point.
- 3
Membrane and Detail Work
New EPDM or modified bitumen is laid with proper pipe boots, step flashing, and ridge vent tie-ins where the flat area meets pitched roofing.
- 4
Edge and Drainage Finish
Drip edge, gutters, and soffit intake are adjusted or replaced to ensure water moves off the roof before freeze-thaw cycles begin.