Turnbull Winery

The Challenge

One of Napa Valley’s most storied wine estates, Turnbull Wine Cellars, situated on the original landholding in the heart of Oakville, was designed by acclaimed San Francisco Bay Area architect William Turnbull — the winery’s namesake. Over more than four decades the winery has been a global attraction, from its tasting room and gallery to its vineyard gardens.

By 2021, the existing cementitious tile roof covering approximately 13,500 square feet of winery structures had reached the end of its serviceable life. The aging tile system was showing visible signs of deterioration — a critical concern for a high-visibility, hospitality-focused property where aesthetics are as important as performance.

Our Solution

Fidelity Roof Company recommended a full tear-off and replacement using CertainTeed Landmark TL architectural composition shingles, an industry-leading product engineered for both superior performance and refined curb appeal. Composition shingles were selected as the optimal solution for this Napa Valley commercial roofing project because they offer an ideal balance of visual quality, long-term durability, and value. The heavy-weight and dimensional profile of the shingles deliver the premium aesthetic that flat or utilitarian roofing systems simply cannot provide. The CertainTeed Landmark TL profile replicates the layered, dimensional appearance of traditional roofing materials — harmonizing with the winery’s rustic, architecturally significant structures — while providing modern weatherproofing performance suited to Northern California’s climate, including resistance to wind, UV exposure, and seasonal temperature variation.

Project Execution

Fidelity Roof Company mobilized an eight-person crew for the full scope of work, completing the project in five weeks. The project began with the complete removal and disposal of the failed cementitious tile system — a process requiring careful coordination to protect the winery’s landscaping, vineyard gardens, and guest-facing areas below.

With the existing roof deck exposed, the crew performed a thorough inspection of substrate conditions before proceeding with installation of the CertainTeed Landmark TL system. Throughout the project, Fidelity Roof’s team maintained clean and organized job site practices consistent with the professional standards expected at a premium hospitality property.

Before and after documentation was captured throughout the complete reroof process, providing the property owner with a clear visual record of the scope and quality of work performed.

The Results

The completed roof replacement delivered exactly what the Turnbull Wine Cellars ownership team required: a structurally sound, visually elevated roofing system that reflects the premium character of one of Oakville’s most recognized wine estates. The dimensional profile of the CertainTeed Landmark TL shingles integrates naturally with the winery’s historic, architect-designed structures, maintaining the authentic Napa Valley aesthetic.

CertainTeed’s Lifetime Limited Warranty against manufacturing defects provided the property owner with long-term materials confidence. Paired with Fidelity Roof Company’s own 5-Year Workmanship Guarantee, which covers installation quality, the property owner gained complete peace of mind.

Due to the success of the project, the owner commissioned Fidelity Roof to complete additional roof work on other buildings across the winery campus.