Atlanta Roofing System Upgrade

This roof replacement in Atlanta, GA restored full protection to the home using GAF Timberline HDZ shingles in Charcoal. The project improved curb appeal, increased weather resistance, and ensured the homeowner received a durable, manufacturer-backed roofing system built for Atlanta’s climate conditions.

Project Overview

Following storm exposure and age-related wear, the homeowner noticed declining roof performance, including compromised shingles, aging underlayment, and vulnerable flashing areas. An inspection confirmed the need for a full roof replacement, along with upgraded leak protection, flashing replacement, and ventilation improvements. The home’s existing roofing system no longer provided dependable defense against Atlanta’s frequent rain and seasonal storms, prompting the need for a comprehensive and long-lasting solution.

Results

The new roofing system delivered immediate improvements in protection, appearance, and overall performance. GAF Timberline HDZ shingles provided enhanced wind resistance, consistent coverage, and long-term durability. Leak barriers were installed at valleys, penetrations, chimneys, and skylights, while low-slope sections were reinforced using a torch-applied modified bitumen system with matching cap sheet for a seamless finish. Ventilation was improved by removing the existing power fan and installing a turbine vent and ridge vent system for proper exhaust. The project also included replacing the existing skylight, upgrading flashing throughout the roof system, and completing necessary decking repairs. With installation completed to manufacturer standards, the homeowner now has a secure roofing system built to perform through future storms.

Materials Used

Roofing:

GAF Timberline HDZ shingles – Charcoal

GAF Seal-A-Ridge hip & ridge cap – Charcoal

Underlayment & Protection:

Tri-Built synthetic underlayment (4 rolls)

GAF StormGuard ice & water shield (3 rolls)

Low-Slope Roofing System:

Torch-applied modified bitumen cap sheet – Charcoal (5 rolls)

Torch smooth base sheet (5 rolls)

CertainTeed Glass Base base sheet – 3 square roll (2 rolls)

Perlite insulation board – 4' x 4' x 1/2" (25 sheets)

Starter & Edge Protection:

Tri-Built starter shingles (3 bundles)

Drip edge – 10" x 4" x 1" 90-degree white (eaves) (27 pcs)

Drip edge – 10" x 4" x 2" white (rakes) (7 pcs)

Drip edge – 10" x 4" x 1" 90-degree white for modified section (2 pcs)

Ventilation & Accessories:

GAF Cobra III ridge vent (27 pcs)

Turbine vent – Lomanco, black (1 vent)

Gooseneck dye exhaust vent – black (1 vent)

Retro boot / electrical boot (1 boot)

HVAC boot and storm collar – reuse existing cap (1 kit)

Flashing & Metals:

Rolled flashing – 25' galvanized (24" wide) (1 roll)

Step flashing – galvanized 2" x 4" x 8" (1 box)

Headwall flashing – 4" x 4" black (1 pc)

Counter flashing – 3" black (2 pcs)

Decking & Lumber:

1/2" CDX plywood (5 boards)

1" x 6" boards (25 boards)

2" x 4" boards – 12' (1 bundle)

Fasteners & Sealants:

Simplex nails – 1.5" (1 box)

Galvanized nail coils – 1 1/4" (1 box)

Stinger NailPac (2 boxes)

NP1 sealant – Black (4 tubes)

Skylights:

Exarc curb-mounted skylight – 25.5" x 25.5" (1 unit)

White primer paint for skylight curb (1 can)

Finishes:

Black spray paint (2 cans)

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