A 2024-2025 project on a recently renovated 1960s home on Siesta Key. The owner had purchased the property as a fixer; the architect was retained to bring the home forward without losing the mid-century bones. The roof had been the open question.
The structure could not carry natural slate without a substantial framing retrofit. The architect did not want asphalt — the home asked for a more permanent material than that. The decision came down to standing-seam metal versus synthetic slate. The architecture wanted slate.
Why DaVinci was the right call here
The DaVinci Roofscapes polymer-blend tile reads, from any reasonable distance, as natural slate. The tiles are individually variable in color and slight surface texture; the field reads as field slate, not as a manufactured product.
We chose DaVinci's Multi-Width Slate in a five-color blend — Dark Sterling, Stone, Slate Gray, Heather, and Espresso — that the architect mixed to match a reference sample of historic Vermont slate they had pulled.
The detailing
The synthetic tile was treated with the same care a natural slate field would have received:
- Underlayment: Polyglass Polystick TU Plus, fully adhered
- Flashings: copper at every transition
- Hip and ridge: copper, hand-formed
- Gutter system: copper
- Fasteners: 316 stainless, per the DaVinci attachment table
Total field area: 3,800 square feet.
The photographer's test
The architect's portfolio photographer came out to shoot the home in late 2025 — a sequence of evening photos for an architectural publication. Three weeks after the shoot, the photographer called the architect to ask whether the slate had been replaced; the photos read different from what he remembered.
The slate had not been replaced. The light was different. The photographer had not realized, from his original site visit, that the slate was synthetic. He had been photographing what he assumed was natural slate.
We are not claiming this is the norm. From the porch, on a sunny afternoon, with reasonable attention, the DaVinci product is distinguishable from natural slate. From 20 feet, in most light, by most people, it is not.
What the synthetic earned vs. natural slate
- Cost: roughly 55% of equivalent natural slate
- Weight: 35% of natural slate dead load
- Structural retrofit: avoided entirely
- Warranty: 50 years versus 100+ for natural slate
- Aesthetic: 90-95% match in normal viewing conditions
For this specific project, the math worked.
Where we would not have specified synthetic
- A historic Mediterranean Revival where the architectural review would require natural slate
- A home where the roof is highly visible from a porch or terrace and the comparison is daily
- A property valued at a tier where a 100-year roof is part of the underwriting
The honest match is what makes the synthetic work. The honest mismatch is what disqualifies it elsewhere. Both calls deserve to be made openly.
Timeline
7 months from contract to handover. The DaVinci was on lead-time of 8 weeks; we used the time for substrate work, flashing installation, and gutter fabrication.
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