Bespoke Diamond-Shaped Zinc Metal Roof on $12 Million Marin County Home

Bespoke Diamond-Shaped Zinc Metal Roof on $12 Million Marin County Residence

In one of Marin County’s most exclusive residential neighborhoods, a homeowner undertaking a significant architectural project requested something very specific from Wedge Roofing: a bespoke roof that would be as distinctive as the home itself.

With the property valued at approximately $12 million, the home sits in a highly visible location with striking views of Mt. Tam where the roofline is a defining feature of the architecture. Rather than choosing a conventional roofing material, the homeowner wanted a custom metal roof system that would elevate the home’s design while providing exceptional durability and fire protection.

After extensive research, the homeowner requested that Wedge Roofing install the most bespoke metal roof available – a zinc diamond-shaped shingle roof manufactured by Fine Metal Roofing Systems.

A Roof Designed as a Bespoke Architectural Statement

On homes of this caliber, roofing becomes more than a protective surface—it becomes an architectural element.

The Marin County homeowner selected Fine Metal Roof Tech diamond shingles in Black Noir zinc, arranged in a striking 90-degree diamond configuration. The pattern creates a geometric roof surface that transforms the entire roof plane into a design feature.

The diamond geometry produces:

• A highly refined architectural texture
• Subtle shifts in light reflection throughout the day
• A roof surface that complements both contemporary and traditional architecture

Because the roof is visible from surrounding properties and elevated viewpoints, the homeowner wanted a roof that would enhance the visual identity of the home, not simply cover it.

The Craftsmanship Behind a Bespoke Diamond Zinc Metal Roof

Installing a diamond-shingle metal roof is a highly specialized craft. Unlike standard roofing systems, every component must be installed with exact dimensional accuracy to preserve the geometry of the diamond pattern.

Each diamond shingle:

• Interlocks mechanically with adjacent shingles
• Engages custom stainless-steel fastening clips
• Contains no exposed fasteners on the roof surface

This creates a continuous interlocking metal roof field, eliminating reliance on exposed screws or surface sealants. The result is both aesthetically refined and exceptionally durable.

Maintaining the consistency of the diamond pattern across an entire roof requires meticulous layout and installation. Even small dimensional deviations can disrupt the visual symmetry of the system.

For this reason, diamond-shingle roofing is widely regarded as one of the most precise forms of metal roof installation.

Custom Flashing and Architectural Integration

A bespoke roof system requires more than distinctive shingles. Flashings and transitions must also be carefully fabricated to integrate with the roofing design.

At roof transitions—such as chimneys and roof-to-wall intersections—each metal shingle must be:

• Scored and bent to form locking edges
• Integrated with custom zinc flashing components
• Installed so that the diamond pattern remains visually consistent

To properly install these flashings, stucco was removed at roof-to-wall areas so that zinc flashing systems could be installed behind the exterior finish, ensuring proper waterproofing.

Custom chimney flashings were fabricated from zinc sheet metal to match the architectural design of the roof.

Preparing the Roof for a Custom Metal System

Before the installation began, the existing roof was removed down to the original sheathing boards. The roof structure was then prepared to receive the specialized metal roofing system.

The roofing assembly included several protective layers:

• High-temperature self-adhered underlayment
• FR-10 fire barrier, when required
• Enkamat 7010 or Air-Z zinc underlayment, which provides ventilation and separation beneath the zinc shingles

These components help ensure the roof performs reliably for decades.

Installation of the Diamond Zinc Shingles

The finished roof was installed using Black Noir Zinc diamond shingles, including:

• 13-inch diamond shingles across the primary roof surfaces
• 8-inch diamond shingles used above entry areas and architectural window features

All shingles were secured using concealed stainless-steel fastening clips. Because no fasteners penetrate the visible face of the shingles, the finished roof surface remains clean, uninterrupted, and highly durable.

Trim components were fabricated from stainless steel, complementing the zinc roof system.

A Roofing Tradition Rooted in European Craftsmanship

Diamond-shingle metal roofing systems have a long architectural tradition in Europe, where similar roofs have crowned buildings for centuries. The craftsmanship behind these roofs often associated with traditional metalworking trades has stood the test of time.

Today, modern zinc systems combine that historic craftsmanship with advanced building science to create roofs that are both beautiful and exceptionally durable.

A Marin County Roof Built to Last Generation

For this Marin County residence, the bespoke zinc roof provides:

• Class A fire-rated protection
• Exceptional resistance to corrosion and weather
• Minimal long-term maintenance
• A distinctive architectural roof surface worthy of a luxury home

More than simply a roofing project, this installation created a custom architectural feature designed to last for generations while enhancing the character of one of Marin County’s most remarkable homes. Please contact us for a free estimate on a metal roof.