Roof Flashing Repair in Rest Haven, GA

If you've got a leak that keeps coming back after repeated caulking attempts, or one that other contractors haven't been able to solve, the odds are strong that flashing is the real problem. Flashing failures account for a disproportionate number of the roof leaks we diagnose across the Rest Haven area and northern Gwinnett County. The failure happens at any point where your roof meets a vertical surface — a chimney, a dormer wall, a lower porch roof tying into a two-story wall, around a skylight. When flashing fails, it mimics a general roof problem. Caulk over it and the leak appears fixed for a season or two before water finds its way back through the same gap.

Georgia code requires sheet metal flashing and counterflashing at least 15 inches wide at all chimneys, walls, and roof intersections. On many homes in the Rest Haven corridor and throughout Buford and Sugar Hill that were built in the 1990s and early 2000s, the original installation either didn't meet that standard or the flashing that was installed has reached the end of its effective life after two decades of North Georgia's thermal cycling — freezing winter nights followed by 100-degree summer afternoons, expanding and contracting the metal over thousands of cycles.

A Real Job from the GA-13 Corridor — Near Rest Haven

A split-level built in 1994 on a lot near Buford Highway, just south of where GA-13 crosses from Gwinnett into Hall County. The home had a dormer addition from the early 2000s that created a roof-to-wall transition on the left side of the main structure.

Water appearing along the interior wall where the dormer addition met the original roofline. It had been an on-and-off problem for about four years. One contractor had sealed the junction with roofing cement. Another had re-caulked it with a different product. Each fix seemed to work for one rain season before the water returned.

When we pulled back the shingles at the dormer wall transition, we found the 2000s-era installation had used a single piece of bent aluminum with roofing cement — no woven step flashing, no counter flashing embedded in the siding. Common shortcut for the era, but it doesn't meet current Georgia code requirements for 15-inch-wide flashing at wall intersections. Both caulk repairs had been layered on top of the failed original system, creating a dam that actually trapped moisture against the wall sheathing rather than diverting it.

Removed the old single-piece flashing entirely. Installed proper step flashing woven with the shingle courses along the roof surface. Cut channels into the siding above and installed counter flashing that laps over the step flashing — a two-layer system that meets current code and handles the thermal movement that North Georgia's temperature swings demand.

The homeowner went through two full years — including heavy late-season rain events that the Lake Lanier region is known for — with zero recurrence. The difference between a code-compliant system and caulk over a failed one is the difference between solving the problem and temporarily hiding it.

Why Flashing Keeps Failing When It's Done Wrong

North Georgia's temperature range creates constant thermal cycling. Winter lows in the 20s followed by summer highs above 100 means metal flashing expands and contracts relentlessly. A single-piece caulked installation can't handle that movement — the sealant cracks and separates within a few seasons, every time. Proper step-and-counter flashing systems are designed with independent movement in mind, which is why they hold up under the same conditions.

The homes most likely to have flashing issues are those built before the mid-2000s in the Rest Haven area, across southern Buford, into Flowery Branch, and through the Suwanee corridor — construction practices varied widely during that period, and not every crew was held to the flashing standards that are standard practice today. If your home has had repeated caulk repairs at the same junction, the answer isn't more caulk — it's proper flashing installed to Georgia code.

For full repair services, see our roof repair page. For storm-related flashing damage, see our storm restoration page.

Recurring leak you can't seem to solve? Call (678) 766-9646 — we'll find the actual source.