Snow guards
The ridge and hips are capped in a traditional pattern to protect people, gutters and plantings below.
Slate Roofing
Slate Roof Installation Parsippany, NJ
A Parsippany slate roofer can help you choose a slate, plan the layout and install the roof with fasteners and flashing that last as long as the stone. Dial (862) 693-4349 to talk with a local roofer about a new slate roof.
Slate is not one material but many, and choosing well comes first. Different slates vary in durability as well as color, from long lived hard slate to softer slate with a shorter service life. Color stability matters too: unfading slate stays the same, while weathering slate changes tone over time.
Before ordering slate, the roof framing needs a hard look. A slate roof weighs several times as much as asphalt shingles, and thicker slates weigh more, so a home switching from shingles often needs an engineer to review the rafters and sometimes add framing. Building codes typically require a minimum slope of 4 in 12 for slate, laid over a solid deck.
A slate roof is only as long lived as its nails and metal. Two nails per slate, copper or stainless and never driven tight, let the slate hang freely and keep it from cracking. Copper flashing at valleys, walls and chimneys is the usual match, because it lasts on the same timescale as the stone.
Depending on what the roofer finds, slate roof installation in Parsippany, NJ can go hand in hand with slate roof replacement and slate roof repair.
Dealing with this in Parsippany, NJ right now? Call (862) 693-4349 to reach a nearby roofing contractor.
Call nowThe process
What happens during a slate roof installation
Here is how a slate roofer typically installs a new slate roof.
Check the structure
The roofer confirms the framing and deck can carry the slate, helps choose a grade, size and thickness, and lays out the pattern and exposure. The exposure works out to half of what is left once the headlap is taken from the slate length.
Lay the underlayment
The deck is sheathed or repaired, then covered with underlayment, with ice barrier membrane at the eaves and in valleys where the climate calls for it. Drip edge and a cant strip at the eaves come next.
Lay the starter
The roofer lays a starter course over a cant strip so the bottom row sits flat and sheds water like the rest. The first exposed course goes directly over the starter, with its joints offset.
Nail the field
Each course is laid to a chalk line with the vertical joints offset, and every slate is hung on two copper nails driven just enough to hold it. Lower pitches get more headlap, and very steep pitches can use less.
Install copper flashing
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
Ridges and hips are finished with a saddle or combed ridge, mitered or Boston hips, or copper ridge caps. A stock of spare slate is left with the owner for later repairs.
What is included
What slate roof installation includes
Deck preparation
Sheathing is repaired and dried in with ice barrier at eaves where needed.
Valley metal
Long life metal is used at every flashing point to match the life of the slate.
Copper fasteners
Each course gets the headlap the slope calls for so the fasteners last as long as the stone.
Slate selection
The framing is checked for the weight of slate to suit the home and climate.
Related service
Natural Slate Roofing Parsippany, NJ
Natural slate roofing uses stone that has been quarried and split into slates, with no coatings or binders to wear off. It does not burn, it resists rot and insects, and good slate barely changes over generations. Each slate is slightly different in thickness and texture, which gives the roof its handmade look.
Natural slate roofing in Parsippany is a long term choice, so it pays to match the slate grade to how long you want the roof to last. Some owners compare natural slate with synthetic slate, which weighs less but lasts far fewer years. Ask the roofer to show real slate samples before ordering so you see the true color and texture.
Local help
Slate Roof Installation Near Me
Around Parsippany, slate installations range from additions matched to an original slate roof to full new slate roofs on custom homes. Owners in Parsippany and neighboring communities such as Lake Hiawatha, Mountain Lakes, Boonton and Whippany often choose slate to match the character of an older home, and good layout and copper details are what let the roof last for generations.
Searching for slate roof installation near me from Parsippany or Lake Hiawatha, Mountain Lakes, Boonton and Whippany? Call (862) 693-4349 to talk to a roofer who works in your part of town.
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. When warm attic air melts the snow, the meltwater runs down and freezes again at the 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. Most homeowners in Parsippany, NJ have the roof checked in the fall and again after the snow melts.
Why call
Why not wait
Less damage
Small roof problems caught early usually stay small repairs.
Familiar with local homes
Roofers in Parsippany know the roof types and weather wear common in local homes.
Clear next steps
Ask the roofer about the cause, the options and the estimate before work starts.
Common questions about slate roof installation
Why do slate roofs have snow guards?
Smooth slate sheds snow all at once, so snow guards hold it in place to melt gradually. They are most important above entries, walks and lower roofs. In places with little snow, they are less of a concern.
Which is better, hard or 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. Pick based on the lifespan you want and the look of the house.
What nails should be used for slate?
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. Each slate gets two nails, driven so the slate hangs without being clamped.
Can my house support a slate roof?
A slate roof weighs far more than shingles, with the exact load depending on the thickness of the slate. Homes built for slate carry it fine, but a house framed for shingles may need an engineer and added framing before switching. Where framing is limited, thinner slate or a lighter synthetic slate may work.
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. Once the underlayment is down, the house is protected from rain.
More questions? Call (862) 693-4349
Other services that may help
Slate Roof Replacement
Full slate roof replacement when the stone, the nails or the flashing have failed across the roof, with salvage of good slate wherever possible.
Learn moreSlate Roof Repair
Replacing cracked, slipped and missing slates, renewing worn flashing and fixing the nail and valley problems behind most slate leaks, so a roof built to last a century keeps going.
Learn moreRoof Installation
Putting on a new roof the way the material maker intends, with ventilation and flashing planned in from the start.
Learn moreRoofing Contractor
A local roofing contractor for repairs, replacements, inspections and new roofs on homes, from the first inspection through cleanup.
Learn more
Looking for something else?
See all roofing servicesGet slate roof installation help in Parsippany
Call (862) 693-4349 to talk to a roofer serving Parsippany, NJ.