Slate roof services, sorted by problem
Start with what you're seeing. Each page explains common causes, what should be inspected, and typical repair options.
Leaks and damaged slate
Slate Roof Leak RepairA leak under a slate roof is a symptom, not a diagnosis. Water often travels along the deck or rafters before it shows on a ceiling, so the stain is rarely right under the failure. Good leak repair starts by tracing the entry path.Read more Broken, Slipped & Missing SlateA single broken or slipped slate can usually be replaced one at a time. The key question is why it failed. One cracked slate from a falling branch is different from many slates sliding down because their nails have rusted through.Read more
Flashing, chimneys and valleys
Slate Roof Flashing RepairGood slate can last far longer than the metal around it. Flashing is the metal that seals the joints where the roof meets walls, dormers, chimneys and pipes. When it wears out, water gets in even though the slate looks fine.Read more Chimney Leaks on Slate RoofsChimneys are one of the most common leak spots on older Pittsburgh homes. Water can come through the roof flashing, the chimney cap, cracked mortar, or porous brick. Sorting out which one matters before anything is replaced.Read more Slate Valley RepairA valley is where two roof slopes meet. It carries more water than any other part of the roof. On slate roofs, the metal valley liner often wears out before the slate beside it.Read more Copper Flashing & MetalworkBecause quality slate can last a very long time, the metal around it should too. Copper is commonly used on slate roofs for valleys, flashing, ridge caps, built-in gutters and slate hooks.Read more
Inspection, restoration and planning
Historic Slate Roof RestorationMany Pittsburgh homes and churches still have their original slate. Preservation guidance favors repairing historic roofs where practical and matching any replacement slate in size, color, texture and pattern.Read more Slate Roof InspectionsA good slate inspection looks at the whole roof system, not just the stones. It should tell you what is working, what is failing, and what can wait.Read more Slate Roof MaintenanceSlate roofs need little care, but a small amount at the right time can prevent bigger repairs. The goal is to catch loose slates and worn metal early.Read more Slate Roof ReplacementReplacement is sometimes the right call, but it should follow evidence. Soft or flaking slate across the roof, widespread fastener failure, or a failing deck can point toward replacement.Read more Snow, Ice & DrainagePittsburgh winters bring repeated freeze and thaw. Ice at the eaves can hold meltwater that backs up under slate. Sliding snow can also damage gutters and people below.Read more
Storms, urgent help and larger buildings
Storm Damage to Slate RoofsStorms can crack slate, knock pieces loose, or bend metalwork. Document what you can see safely, then have the roof assessed before assuming the whole roof is lost.Read more Emergency Leak StabilizationWhen water is actively coming in, the first step is to slow it down safely. Temporary stabilization, such as a tarp or temporary cover, protects the inside until a proper slate repair can be scheduled.Read more Church & Institutional SlateChurches and institutional buildings often have large, steep slate roofs with towers, dormers and complex metalwork. Repairs are frequently planned in phases to fit budgets and board approvals.Read more Commercial Slate RoofingSome commercial buildings, apartments and mixed-use properties in Pittsburgh carry slate roofs. Property managers usually need clear scopes, safe access around tenants, and documentation.Read more
Find out what's actually failing
Tell us what you're seeing. A local slate roofing contractor will follow up to talk through it and arrange an assessment.