Marietta’s humid subtropical climate brings heavy summer downpours and occasional winter freezes that stress flat roof membranes. In neighborhoods like Forest Hills and Downtown Marietta, many homes built between the 1960s and 1980s use modified bitumen or early EPDM systems that develop seam failures and blistering where water pools near HVAC curbs. We inspect for these patterns first because small breaches often hide under gravel ballast or pavers.
Kennesaw Mountain runoff and the slight slopes common on Cobb County flat roofs can push water toward parapet walls if drains are clogged by oak leaves. Homeowners in Whitlock Heights frequently see interior stains after prolonged August rains because the original flashing was never tied into the wall properly. Our repairs start with removing loose material and installing new termination bars with compatible sealants rated for Georgia heat.
Flat Roof Repair Near You — Choose Your City
Every city below has its own local Flat Roof Repair page with coverage details.
Fulton
Gwinnett
Cobb
DeKalb
Henry
Forsyth
Walton
Douglas
Cherokee
Richmond County
Muscogee
Coweta
Cobb County
Newton County
Houston County
Chatham County
Cherokee County
Gwinnett County
Fulton County
We also address commercial-style flat sections on residential additions near Marietta Square where TPO was installed over existing BUR. These transitions crack at the edges when the building shifts during mild winter temperature swings. Proper welding or adhesive application prevents the same leak from returning within two seasons.
Before any work we check that the existing deck can support added weight and that new materials meet current Cobb County wind-uplift guidelines for the area. This step avoids callbacks when the next tropical system moves through.
Technician insight
In Marietta the thing that catches most people out with flat roof repair is how quickly ponding develops behind parapets on 1970s homes in Whitlock Heights once the original drains start collecting oak leaves. The mild winters never fully dry the decks, so small seam openings turn into interior leaks by the next heavy August rain if you only patch the visible spot.
Ponding Leak Near HVAC on Forest Hills Home
Water entered a family room ceiling after three days of rain. We found the TPO seam had opened behind the HVAC curb where leaves blocked the scupper. We cut out the failed section, welded new membrane, cleared the drain, and added a tapered cricket so water now flows off the roof.
Flat Roof Repair Services We Offer
✓TPO Membrane Patching
Heat-welded patches restore watertight integrity on TPO roofs common on Marietta additions after storm damage or seam separation.
✓EPDM Seam Repairs
We clean and re-adhere or tape failing EPDM seams that open from thermal movement in Cobb County’s hot summers and mild winters.
✓Modified Bitumen Flashing Replacement
New base and cap flashing installed at walls and curbs prevents water entry at the most common leak points on older Marietta flat roofs.
✓Drain and Scupper Clearing
Clearing and re-sealing drains stops ponding that leads to membrane breakdown on flat roofs in Forest Hills and Whitlock Heights.
✓Parapet Wall Waterproofing
We apply compatible coatings and new counterflashing to parapets that leak during heavy rains around Downtown Marietta.
Flat Roof Repair Cost in Georgia
| Service | Typical Range | What Affects It |
|---|---|---|
| TPO or EPDM seam repair | $450–$950 | Price rises with roof height and number of HVAC units to work around. |
| Modified bitumen flashing replacement | $600–$1,400 | Varies by linear footage and whether parapet coating is also needed. |
| Drain clearing and reseal | $250–$500 | Higher when multiple drains are clogged with debris from nearby trees. |
| Small membrane patch (under 4 sq ft) | $350–$650 | Depends on membrane type and whether ballast must be removed first. |
Ranges are typical for Georgia and confirmed with an exact written quote before any work starts.
How it works
- 1
On-Site Inspection
We walk the roof, probe seams, and check drains while noting ponding areas typical after Marietta summer storms.
- 2
Material Assessment
We identify the existing membrane type and test adhesion so repairs match the original system used on Cobb County homes.
- 3
Targeted Repair
We remove damaged sections, install new membrane or flashing, and seal all edges to handle local humidity and temperature swings.
- 4
Final Walk and Documentation
We photograph the completed work and review drainage to confirm water flows away from the structure.
Pricing
Upfront written quotes after inspection; final price depends on membrane type, access, and extent of water damage.