Atlanta Charcoal 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 weather resistance, addressed underlying decking and ventilation concerns, and ensured the homeowner received a durable, manufacturer-backed roofing system built for Atlanta’s demanding climate conditions.
Project Overview
Following age-related wear and declining roof performance, the homeowner experienced concerns related to compromised shingles, deteriorated decking, and vulnerable flashing areas. An inspection confirmed the need for a full roof replacement, along with upgraded leak protection, flashing systems, and ventilation improvements. The existing roof system no longer provided reliable defense against heavy rainfall and seasonal storms, prompting the need for a comprehensive and long-lasting solution.
Results
The new roofing system delivered immediate improvements in protection, durability, and overall performance. GAF Timberline HDZ shingles provided enhanced wind resistance and consistent coverage across all roof slopes. Advanced leak barriers were installed at valleys, penetrations, chimneys, and low-slope sections, while new flashing systems were added at walls and roof intersections to ensure proper water management. Ventilation was upgraded by removing existing components and installing a full-length Cobra III ridge vent system, along with new box vents where required. Rotted decking was replaced as needed to restore structural integrity. With installation completed to manufacturer and code standards, the home now has a secure roofing system built to perform through future storms.
Materials Used
Roofing:
GAF Timberline HDZ shingles – Charcoal (45 squares)
GAF Seal-A-Ridge hip & ridge cap – Charcoal (7 bundles)
Underlayment & Protection:
Tri-Built synthetic underlayment (5 rolls)
GAF StormGuard ice & water shield (6 rolls)
Starter & Edge Protection:
Starter shingles – House brand (4 bundles)
Drip edge – 10" x 5" x 2" black (eaves) (15 pcs)
Drip edge – 10" x 4" x 2" black (rakes) (27 pcs)
Ventilation & Accessories:
GAF Cobra III ridge vent (30 pcs)
Lomanco 750 Slantback box vents – Black (3 vents)
3-in-1 pipe boots with rain collars – Black (4 boots)
Electrical box (to close power fan) (1 box)
Flashing & Metals:
Rolled flashing – 25' galvanized (24" wide) (1 roll)
Step flashing – 2" x 4" x 8" 26ga black (2 boxes)
Headwall flashing – 4" x 4" black (5 pcs)
Counter flashing – 5" black (4 pcs)
Decking & Lumber:
1/2" CDX plywood (12 boards)
Fasteners & Sealants:
Galvanized nail coils – 1-1/4" (3 boxes)
Stinger NailPac (3 boxes)
NP1 sealant – Black (8 tubes)
NP1 sealant – Clear (1 tube)
Ultra Karnack 19 roofing sealant (1 tube)
Finishes:
Black spray paint (3 cans)