CertainTeed Landmark Roof Replacement for a Historic Ranch Home in Cottonwood, AZ

A self-funded residential roof replacement on a historic ranch-style home in Cottonwood, AZ. The homeowner requested a durable, code-compliant roofing system to address active leaks at a low-slope transition and refresh the property without involving insurance or a lender. The project centered on installing a full CertainTeed Landmark asphalt shingle system with enhanced waterproofing at the leak‑prone area.

Project At-a-Glance

• Roof size: ~4,400 sq ft (44 squares)
• Shingle brand/system: CertainTeed Landmark with RoofRunner synthetic underlayment, SwiftStart starter, and Shadow Ridge ridge components
• Insurer: None (self-funded)
• City: Cottonwood, AZ

Challenge: Stop leaks and preserve ranch-home character in Cottonwood

The home had an aging roof with a known leak at a low-slope transition, creating risk for interior damage. The owner needed a dependable replacement that would protect the historic ranch profile while improving ventilation and waterproofing.

All work needed to be performed to local code and permitting requirements in Cottonwood, Arizona, ensuring a compliant residential reroof.

Solution: Full tear-off, Landmark shingle system, and targeted low-slope waterproofing

After a complete tear-off to the deck, the team installed a CertainTeed Landmark architectural shingle system over the main house with manufacturer-specified accessories, then reinforced the low-slope leak area using self-adhered base and granulated cap sheets for added protection. Venting and penetrations were upgraded and properly flashed to extend service life and performance in the Cottonwood climate.

• Removed one layer down to clean decking and hauled away debris.
• Installed CertainTeed RoofRunner synthetic underlayment and Landmark shingles per manufacturer guidance.
• Reinforced the low-slope transition over the leak area with self-adhered base and granulated cap sheets.
• Upgraded metal edges and flashings; sealed and detailed all penetrations.
• Improved airflow with static roof vents to support shingle longevity.
• Managed municipal permitting through the City of Cottonwood.

Result: Leak-free performance, stronger weather defense, and classic curb appeal

The new Landmark roofing system delivers reliable, leak-free protection with a cleaner roofline that suits the home’s ranch architecture. The enhanced low-slope waterproofing and updated ventilation improve durability and indoor comfort, giving the Cottonwood homeowner peace of mind and pride in a roof that’s built to last.

Trust & Proof: Certified materials, written warranties, and municipal permitting

This project uses the CertainTeed Landmark shingle family and RoofRunner synthetic underlayment installed to manufacturer requirements, supported by our 5‑year labor warranty and the manufacturer’s standard product warranties. Permitting was handled with the City of Cottonwood to keep the project compliant and on record.