Underlayment
Sheathing is repaired and dried in lapped to shed water to the eaves.
Slate Roofing
Slate Roof Installation Montvale, NJ
A Montvale 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. Call (551) 390-0362 to reach a local roofer who installs slate.
The first choice on any slate roof is the slate itself. 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.
The structure comes before the stone. Because slate is so heavy, rafters or trusses are checked, and reinforced if needed, before a conversion from a lighter roof. Slate also needs a solid deck and a slope of at least 4 in 12 under typical building codes.
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 valleys and flashing are standard on slate, since lesser metals wear out decades before the stone does.
Slate Roof Installation is often paired with slate roof replacement and slate roof repair, depending on the cause.
Looking for Montvale slate roof installation? Call (551) 390-0362 to reach a nearby roofing contractor.
Call nowThe process
The slate roof installation process
Every slate is placed and nailed by hand, and the layers below matter as much.
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.
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.
Flash the roof
Copper step flashing is woven in along walls and dormers, counter flashing is set into chimney mortar joints and valleys are lined with copper. Snow guards help hold snow on the roof, since snow slides off smooth slate in heavy sheets.
Close the top
Ridges and hips are finished with a saddle or combed ridge, mitered or Boston hips, or copper ridge caps. Spare slates from the same lot are left for future repairs.
What is included
A complete slate roof system
Ridge finish
Snow guards keep snow from sliding off in sheets with spare slate left for repairs.
Copper fasteners
Every slate hangs on two copper or stainless nails so they lie flat without cracking.
Slate selection
The framing is checked for the weight of slate and reinforcement is planned if needed.
Copper flashing
Open copper valleys and step flashing are installed as the slate goes on.
Related service
Natural Slate Roofing Montvale, 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. Natural variation in texture and edge gives every slate roof a distinct look.
Choosing natural slate for a Montvale 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
In Montvale, new slate is installed both to match older slate roofs and on newer homes built for a long lasting roof. For homes in Montvale and nearby towns like Park Ridge, Woodcliff Lake, Saddle River and Hillsdale that were framed for shingles, the structural check is what decides whether slate is practical, while snow and storms make fastening and snow guards part of the design.
Need slate roof installation around Montvale? Call (551) 390-0362 for a Montvale roofer who serves the towns around it too.
Roofs in this climate
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. Strong coastal storms push rain into every weak spot at the flashing and valleys. That is why roof repair in Montvale is busiest after a hard winter and before the next one.
Why call
Why not wait
Smaller repairs
A roof problem fixed early rarely spreads to the decking, the insulation or the ceilings.
Roofers who know Montvale
Local roofers see the same roofs and storm damage across Montvale and nearby towns.
Clear next steps
Ask your questions before you agree to anything.
Slate Roof Installation questions
How long does it take to install a slate roof?
Slate goes on slowly because every slate is laid and nailed by hand, so most homes take several weeks. Complex rooflines, copper detailing and structural work add time. Once the underlayment is down, the house is protected from rain.
How heavy is a slate roof?
Slate is among the heaviest roof coverings, several times the weight of asphalt shingles, and thicker slate weighs more. 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.
Which is better, hard or soft slate?
Slates vary by quarry, and hard slates outlast soft ones. Soft slate is easier to work, though it is not meant to last as long. The right choice depends on how long you want the roof to last and what matches the home.
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 matter most over doorways, walkways, decks and lower roofs. In places with little snow, they are less of a concern.
What nails should be used for slate?
The nails have to last as long as the slate, which is why copper or stainless steel is standard. Steel nails rust out and cause slates to slip, the most common failure on older slate roofs. Two nails hold each slate, set so it hangs loosely and does not crack.
More questions? Call (551) 390-0362
Often needed together
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, so the new roof lasts as long as the old one did.
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
Putting on a new roof the way the material maker intends, whether it is asphalt shingles, metal or another material.
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
Looking for something else?
See all roofing servicesGet slate roof installation help in Montvale
Call (551) 390-0362 to talk to a roofer serving Montvale, NJ.