Slate replacement
Cracked or missing slates are replaced with matching slate without disturbing the slates around them.
Slate Roofing
Slate Roof Repair Denville, NJ
Most slate roofs in Denville that leak still have plenty of good slate, and the fix is usually new slates in a few spots and new flashing, not a new roof. One call to (862) 421-0116 reaches a nearby slate repair pro.
Natural slate can last a century or more, so most slate repairs deal with what holds it on and what seals it. Hard slate can last well over a hundred years and soft slate somewhat less, but in both cases the nails, flashing and valleys often wear out first. A slipped slate in the gutter is a common sign that the nails, not the stone, are failing.
Repairing slate the right way uses tools and materials made for it. A slate ripper slides under the broken slate to cut its nails, then a new slate of matching size, thickness and color is slipped in and held with a copper or stainless slate hook or a copper nail covered by a metal bib. Tar on slate is a shortcut that fails, and removing it later adds work.
Stay off the roof yourself. Walking on slate breaks it and is dangerous when the stone is wet, so slate roofers use hook ladders and staging instead of walking the field. From the yard, note any missing or slipped slates, flaking surfaces and rusted metal at valleys or chimneys.
Many slate roof repair calls in Denville also turn up a need for slate roof replacement or slate roof installation.
Looking for Denville slate roof repair? Call (862) 421-0116 to reach a nearby roofing contractor.
Call nowThe process
The slate roof repair process
Here is how a slate roofer usually handles a repair.
Rig the roof
Access is set up with ridge hook ladders and staging so nobody has to walk on the slate. Work only happens when the roof is dry, since wet slate is slick.
Trace the leak
Leaks are traced back to their source, which on slate is often a valley, a flashing joint or a cluster of slipped slates. If many slates are slipping, it tells the roofer the nails are failing roof wide.
Pull damaged slates
With a slate ripper, the roofer cuts the nails holding the broken slate and draws it out. The slates above stay in place the whole time.
Fit matching slate
A matching slate is fitted and secured with a hook or a covered copper nail so no fastener is exposed. Salvaged slate of the same type and color often gives the closest match.
Fix the valleys
Worn flashing is renewed by removing the surrounding slates, installing new metal and rehanging the same slates. Copper is the traditional choice because it lasts about as long as hard slate.
What is included
Slate repairs a roofer can handle
Valley repair
Worn or rusted valley metal is replaced to carry water off the roof again.
Chimney flashing
Wall and chimney flashing is rebuilt instead of being covered with tar.
Slate refastening
Slipped slates are put back and secured before they fall and break.
Tar cleanup
Roof cement over slates and seams is replaced with real repairs which also improves the look of the roof.
Related service
Slate Roof Inspection Denville, NJ
Before repairs, an inspection sorts out whether the slate itself is sound or nearing the end. It covers slate condition, nail failure, valley metal, chimney and wall flashing and any old tar repairs. Hard slate in good condition rings when tapped, while worn soft slate sounds dull and breaks easily.
In Denville, a slate roof inspection is done mostly from ladders and with a drone so the inspector does not crack the slate checking it. The attic is checked as well for stains, daylight and rotted sheathing boards. You should come away knowing whether the roof needs a repair, a section relaid or a long term replacement plan.
Related service
Slate Roofing Company Denville, NJ
Slate is a specialty, and a slate roofing company should show it knows the trade. Ask about their tools and methods: slate rippers, hooks, staging and the flashing metals they use. Be wary of anyone who wants to tar the roof or tear off a roof with mostly sound slate at the first visit.
When looking for a slate roofing company in Denville, ask about past slate jobs and whether they keep salvaged slate on hand for matching. Matching size, thickness and color is what makes a repair disappear into the roof. Call (862) 421-0116 to talk with a roofer who works on slate.
Local help
Slate Roof Repair Near Me
In Denville, slate tends to cap older and historic homes, and many of those roofs are still on their original stone. Homes in Denville and neighboring communities such as Rockaway, Mountain Lakes, Morris Plains and Dover with original slate usually need nail and flashing repairs long before the stone itself wears out, which is why finding a roofer who knows slate is worth the extra effort.
Need slate roof repair around Denville? Call (862) 421-0116 for a Denville roofer who serves the towns around it too.
What the local climate does to a roof
Winters here are long and cold, with snow on the roof for weeks at a time and plenty of nights below freezing. Heat escaping from the attic melts snow on the upper roof, and the water refreezes at the colder eaves, which is how ice dams form and back water up under the shingles. Coastal storms and heavy spring rain drive water sideways into flashing, valleys and old chimneys. That is why roof repair in Denville is busiest after a hard winter and before the next one.
Why call
Why not wait
Drier ceilings
Small roof problems caught early usually stay small repairs.
Roofers who know Denville
Local roofers see the same roofs and storm damage across Denville and nearby towns.
Straight answers
Ask the roofer about the cause, the options and the estimate before work starts.
Common questions about slate roof repair
Why are slates sliding off my roof?
The nails holding each slate are the usual culprit. Older slate roofs were often hung with iron or steel nails that rust through long before the slate wears out, letting slates slide down and fall. Each slipped slate is rehung with a slate hook or covered copper nail, and if slipping is widespread, the roof may need to be stripped and relaid with new nails.
Can tar be used to repair slate?
Roof cement is a shortcut that tends to cause more trouble on slate. They crack as they age, trap water against the stone and stain it, and they have to be scraped off before a proper repair can be done. A real repair uses new slate and new flashing instead.
Is it safe to walk on a slate roof?
Slate is not made to be walked on. The stone cracks under weight, especially older slate, and it is very slippery when wet, icy or covered in moss. Professionals work from ladders hooked over the ridge for this reason, and homeowners are safer looking from the ground.
How long does a slate roof last?
Slate is among the longest lasting roofing materials, with hard slate often lasting more than a century. Fasteners and flashing are what wear out first, which is why repairs keep slate roofs going so long. With timely repairs, many slate roofs outlive several generations of owners.
Do I need a new slate roof or just repairs?
Repair is the right call when most of the slate is solid and the problems are nails, flashing or a few broken pieces. Replacement makes sense when a large share of the slate is flaking, soft or breaking, or when nails are failing across the whole roof. A slate inspection shows which situation you are in.
More questions? Call (862) 421-0116
Other services that may help
Slate Roof Replacement
Replacing a slate roof that has reached the end of its life, by relaying the sound slate on new nails or installing new natural or synthetic slate, planned around the weight and look of the home.
Learn moreSlate Roof Installation
Natural slate roofs installed over a solid deck with copper nails, proper headlap and long life flashing, so the nails and flashing last as long as the slate.
Learn moreFlashing Repair
Fixing the metal flashing at walls, dormers, valleys and roof edges, so water runs onto the shingles instead of into the wall.
Learn moreRoof Leak Repair
Finding where water gets through the roof and sealing it at the source, with the damage underneath checked too.
Learn more
Looking for something else?
See all roofing servicesTalk to a Denville roofer about slate roof repair
Call (862) 421-0116 for a local roofer in Denville and nearby towns.