Ridge finish
The ridge and hips are capped in a traditional pattern to protect people, gutters and plantings below.
Slate Roofing
Slate Roof Installation Scotch Plains, NJ
Slate roof installation in Scotch Plains is about more than the stone: the slate grade, deck, underlayment, nails, headlap and flashing all decide whether the roof lasts a century. Call (908) 562-6873 to reach a local roofer who installs slate.
A slate roof starts with picking the stone. Different slates vary in durability as well as color, from long lived hard slate to softer slate with a shorter service life. Some slates hold their color, called unfading, while weathering slates shift in tone over the first years.
Before ordering slate, the roof framing needs a hard look. Natural slate is among the heaviest roof coverings, so framing built for shingles may need reinforcement before slate goes on. Codes generally call for slate only on slopes of 4 in 12 or steeper, over solid sheathing.
The fasteners and flashing are what make a slate roof last. Each slate is fastened with two copper or stainless nails driven so the slate hangs on them rather than being pinned tight, which lets the stone sit flat without cracking. Copper flashing at valleys, walls and chimneys is the usual match, because it lasts on the same timescale as the stone.
Many slate roof installation calls in Scotch Plains also turn up a need for slate roof replacement or slate roof repair.
Looking for Scotch Plains slate roof installation? Call (908) 562-6873 to talk to a local roofer.
Call nowThe process
What happens during a slate roof installation
A slate roof is built slowly and by hand, one course at a time.
Check the structure
Framing is checked, the slate is selected by grade, color and size, and the exposure is worked out from the slate length and headlap. Exposure is the slate length minus the headlap, divided by two.
Lay the underlayment
Underlayment goes over a solid deck, with ice barrier at the eaves where codes require it. Drip edge and a cant strip at the eaves come next.
Start at the eave
A starter course goes on at the eave over a cant strip, so the first exposed course lies at the same angle as the rest. Joints in the first course are offset from the starter below.
Hang the slate
The field slate goes on course after course with offset joints, consistent headlap and two nails per slate that are never driven tight. Headlap is set by slope, with more on lower pitches and less on very steep ones.
Flash the details
Valleys, walls, chimneys and pipes are flashed in copper or another long life metal as the slate goes on. Snow guards are often added so snow does not slide off the slate in sheets.
Close the top
The ridge is finished in slate or copper, and hips are laid in a traditional pattern. Spare slates from the same lot are left for future repairs.
What is included
A complete slate roof system
Valley metal
Open copper valleys and step flashing are installed instead of metals that wear out early.
Underlayment
A solid deck is covered with underlayment before the starter course goes on.
Proper headlap
Slates are nailed loose enough to hang so they lie flat without cracking.
Slate selection
The framing is checked for the weight of slate to suit the home and climate.
Related service
Natural Slate Roofing Scotch Plains, NJ
Natural slate roofing uses stone that has been quarried and split into slates, with no coatings or binders to wear off. It is fireproof, does not rot and holds up to weather for generations when it is properly hung. Each slate is slightly different in thickness and texture, which gives the roof its handmade look.
Choosing natural slate for a Scotch Plains home means planning for a roof that may outlast everyone who installed it. Some owners compare natural slate with synthetic slate, which weighs less but lasts far fewer years. Seeing actual slate samples, not just a brochure, helps you pick the right color and texture.
Local help
Slate Roof Installation Near Me
Around Scotch Plains, slate installations range from additions matched to an original slate roof to full new slate roofs on custom homes. From Scotch Plains out to Fanwood, Westfield, Garwood and Plainfield, a slate roof goes on slowly and by hand, so planning ahead with the roofer matters, and snow guards and copper flashing are worth planning for from the start.
For slate roof installation in Scotch Plains, NJ or nearby towns like Fanwood, Westfield, Garwood and Plainfield, call (908) 562-6873 to reach a roofer who covers your street.
How the weather here affects roofs around Scotch Plains
Winters here are long and cold, with snow on the roof for weeks at a time and plenty of nights below freezing. When warm attic air melts the snow, the meltwater runs down and freezes again at the eaves, building ice dams that push water up under the shingles. Coastal storms and heavy spring rain drive water sideways into flashing, valleys and old chimneys. Most homeowners in Scotch Plains, NJ have the roof checked in the fall and again after the snow melts.
Why call
Why fix it now
Drier ceilings
A roof problem fixed early rarely spreads to the decking, the insulation or the ceilings.
Local knowledge
Roofers in Scotch Plains know the roof types and weather wear common in local homes.
Straight answers
Ask your questions before you agree to anything.
Slate Roof Installation questions
What is the difference between hard and soft slate?
The main difference is durability: hard slate lasts longer than soft slate. Soft slate can still be a good choice and is easier to cut and shape, but it wears sooner. The right choice depends on how long you want the roof to last and what matches the home.
How long does it take to install a slate roof?
A slate roof takes considerably longer than a shingle roof, commonly several weeks. Dormers, valleys, turrets and framing upgrades all extend the schedule. The roof is dried in early, so the house stays protected during the work.
Do slate roofs need snow guards?
Slate is smooth and steep, which lets snow slide off suddenly, and snow guards prevent that. They matter most over doorways, walkways, decks and lower roofs. In places with little snow, they are less of a concern.
Can my house support a slate roof?
Slate is among the heaviest roof coverings, several times the weight of asphalt shingles, and thicker slate weighs more. Whether a particular house can carry it depends on the framing, so a structural check comes first on any conversion. Where framing is limited, thinner slate or a lighter synthetic slate may work.
Why are copper nails used on slate roofs?
Slate can outlast ordinary nails by many decades, so copper or stainless nails are used to match the life of the stone. Rusted steel nails are the reason so many older slate roofs have slipped slates. Two nails hold each slate, set so it hangs loosely and does not crack.
More questions? Call (908) 562-6873
Often needed together
Slate Roof Replacement
Slate roof replacement that strips the roof, sorts reusable slate and rebuilds the deck, underlayment and copper flashing, with salvage of good slate wherever possible.
Learn moreSlate Roof Repair
Slate roof repairs done with a slate ripper, copper hooks and matching slate rather than tar, without damaging the sound slate around the repair.
Learn moreRoof Installation
Installing a new roof layer by layer, from drip edge and underlayment to flashing, vents and the finished roofing, so it sheds water at every edge and seam.
Learn moreRoofing Contractor
A local roofing contractor for repairs, replacements, inspections and new roofs on homes, so you know who is on your roof and what they will do.
Learn more
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