Slate Roof Repair & Restoration in NYC
A well-kept slate roof can last for generations, but the nails, flashings, and individual tiles around it do not. We repair and restore slate roofs across the five boroughs, replacing broken or slipped slates, renewing flashings, and advising honestly on repair versus replacement. Free written estimates.
- 20 years in business
- 10-year warranty on replacements
- Within 2 hours for leaks
- Free written estimate
Problems this solves
- Slipped, cracked, or missing slate tiles
- Leaks that follow rain or snowmelt
- Rusted nails letting slates slide
- Failed or patched flashing at chimneys and valleys
- Tar or caulk smeared over old repairs
- Slates flaking or delaminating
- Sagging roof sections
- Broken slates after a storm or falling branch
- Water stains in the attic or top-floor ceiling
- Previous patch jobs that did not hold
Slate Roofs explained
Slate is a natural stone roofing material, split into thin tiles and hung on the roof deck with nails. The stone itself can outlast the building, but the fasteners, flashings, and underlayment usually wear out first. That is why most slate problems are repairable: individual slates are lifted, replaced, and secured with the correct fasteners, and flashings are renewed in metal that will last. Slate roofs need roofers who know how to work on them without cracking more tiles. When slates are widely delaminating or the deck has failed, repair stops making sense and we say so.
Options and materials
Spot repair and slate replacement
Replace broken or slipped slates individually using proper slate hooks or nails, sourcing a close match in color and size where possible.
Flashing renewal
Replace worn flashings at chimneys, valleys, walls, and penetrations in durable metal, since flashing failure is a common leak source on slate roofs.
Section restoration
Strip and relay a section of slate with new fasteners and underlayment, reusing sound slates. Suits areas where nails have failed across a run.
Full re-lay
Remove slates, renew the deck and underlayment as needed, and re-lay reusable slates with new ones added. Preserves the original look.
Replacement with another material
When slate is past saving or a building owner prefers it, we can discuss other roofing systems. Landmark rules may apply to visible roofs.
Our process
- Careful inspectionWe examine the roof from the ground and, where safe, up close, checking slates, flashings, valleys, ridges, and the attic side for moisture signs.
- Written scope and recommendationYou receive a written estimate that says plainly whether repair, restoration, or replacement makes sense and why.
- Access and protectionWe use roof ladders and protective methods so we do not break more slates, and protect the property below and around the work area.
- Repair or restoreDamaged slates are removed and replaced, nails and fasteners are corrected, and failed flashings are rebuilt in lasting metal.
- Seal vulnerable detailsPenetrations, chimney junctions, and valleys get proper flashing work rather than surface sealants that fail.
- Cleanup and documentationWe clear debris, sweep the property, and provide photos of what was repaired for your records.
What affects the price
Extent of damage
A handful of slipped slates is a small repair. Widespread nail failure or delamination points toward restoring a section or the whole roof.
Roof pitch and height
Steep or tall roofs need more staging and safety setup, and slower, more careful work, which affects labor.
Slate matching
Sourcing slates that match your existing color, size, and thickness can take time, and reclaimed slate varies in availability.
Flashing complexity
Roofs with many dormers, valleys, and chimneys need more flashing work than a plain gable.
Deck and underlayment condition
If the wood beneath the slate is damaged, repairing or replacing it adds to the project.
Access
Narrow lots, rowhouse rooflines, and street frontage can require added protection or staging.
Getting a price
Because these factors change from roof to roof, we don't publish one-size-fits-all prices. We inspect your roof for free and give you a written, itemized estimate before any work starts.
Every slate roofs job includes
- Written inspection findings with a clear repair-versus-replace recommendation
- Protection of landscaping, windows, and surfaces below
- Careful removal of damaged slates
- Replacement slates matched as closely as practical
- Corrected fasteners and secured slates
- Flashing repair or renewal where in scope
- Removal of ineffective tar and caulk patches where practical
- Debris removal and cleanup of the property
- Photo documentation of completed repairs
- Written workmanship warranty, terms on our warranty page
Written workmanship warranty on every job; full roof replacements carry our 10-year warranty. Warranty terms.