
Natural slate
Quarried stone split by hand. The longest-lived pitched roof in New England.
- Lifespan
- 75 to 150 years
- Sample cost
- $1,800 to $3,200 per square
- Wind rating
- Up to 110 mph with proper nailing and hooks
- Historic use
- The standard on Beacon Hill, Back Bay and Victorian Cambridge
Strengths
- Lowest cost per year of life
- Fireproof and rot proof
- Salvageable and repairable slate by slate
Tradeoffs
- Highest upfront cost
- Needs framing sized for the weight
- Requires specialist installers




