Slate roof repair vs. replacement
Short answer: many slate roofs with leaks or broken slates can be repaired, because the slate often outlasts the nails and metal around it. Replacement makes sense when failure is widespread across the whole system. Only an in-person assessment can tell which applies.
Which best describes your roof?
What tips the decision
| Factor | Leans toward repair | Leans toward replacement |
|---|---|---|
| Slate itself | Hard, rings when tapped, little flaking | Soft, flaking or crumbling widely |
| Where damage is | One area or one detail | Every slope |
| Fasteners | Occasional loose slate | Constant slipping everywhere |
| Roof deck | Solid from the attic | Rotted or sagging boards |
| Metalwork | Worn, but slate is sound (renew metal) | Metal and slate both failing |
There's no single percentage of damage that decides this for every roof. Pattern and cause matter more than a number.