GAF Timberline Ultra HDZ Roof Replacement in Cumming, GA

A residential property in Cumming, GA sustained wind and hail damage that required a full roof replacement approved through the homeowner’s insurance. The project called for a steep-slope tear-off and reinstall with careful handling around low-voltage lighting that ran from the soffit to the ridge. The insurer on the claim was Allstate Vehicle and Property Insurance Company.

Project At-a-Glance

• Roof size: 39 squares (≈3,900 sq ft)
• Shingle: GAF Timberline Ultra HDZ (StainGuard) in Dual Charcoal
• Insurer: Allstate Vehicle and Property Insurance Company
• City: Cumming, GA

Challenge: Steep-slope storm damage with sensitive roofline lighting

Wind and hail left the existing laminated composition roof in need of replacement, and the home’s steep 10/12–12/12 sections increased safety and production complexity. In addition, low-voltage lighting ran around the roofline, requiring extra caution during tear-off and installation to avoid disturbance.

Solution: Premium GAF system and code-compliant details for long-term performance

We installed a new GAF Timberline Ultra HDZ roofing system in Dual Charcoal to restore curb appeal and storm resistance for the Cumming, GA home. The crew executed a full tear-off, then upgraded critical flashing and ventilation details to improve durability and airflow for the steep geometry.

• Complete removal of existing laminated shingles and underlayment on all slopes.
• Installation of synthetic underlayment for a cleaner, faster-drying substrate.
• New black drip edge at all eaves and rakes to protect edges and guide runoff.
• Ridge-over ventilation added to balance attic airflow on steep sections.
• Replacement of four pipe boots, step flashing at sidewalls, L-flashing where needed, and new chimney flashing.
• Careful tear-off and install procedures performed around the homeowner’s low-voltage roofline lighting.
• Replacement of three roof-decking sheets where necessary to ensure a solid nailing base.

Result: Stronger weather protection and refreshed curb appeal

The new Dual Charcoal GAF system delivers a cleaner look and enhanced storm resilience for this steep-slope home in Cumming, GA. With improved ventilation, fresh flashing, and sealed penetrations, the roof now sheds water efficiently and stands ready for Georgia’s changing weather—giving the homeowner peace of mind after the claim process.

Trust & Proof: Insurance-approved scope and documented install

This project was performed under an insurance-approved scope for wind/hail damage with Allstate as the carrier, and included all required steep-slope and high-roof safety measures in our production planning. The line items and quantities (ridge vent, flashing, steep-slope factors) were validated through the insurer’s estimate.