Roof Repair in Summit, NJ: Slate, Tudor and Victorian Roofs on the Hill City

Most slate roofs in Summit’s North Side and Hobart Avenue districts can be repaired for many more years, because the stone usually outlasts the nails, flashing and valleys around it. These homes were built mainly between 1890 and the 1940s, many with Pennsylvania or Vermont slate that can last a century or more.

A good slate assessment answers three questions. First, is the stone itself sound? Tap a slate: a clear ring means good stone, a dull thud or flaking surface means it is delaminating. Second, what is failing? Usually it is rusted iron nails letting slates slide, cracked slates from tree limbs or foot traffic, and worn copper or terne valleys. Third, what are the details doing? Chimney flashing, box gutters and the joints with newer additions often cause more leaks than the slate field.

Repairs follow from the answers. Slipped and broken slates are replaced with salvage stone matched for size, colour and thickness, set on copper hooks or nailed under the course above. Valleys are rebuilt in copper. Chimneys get new step and counter flashing let into mortar joints. Nobody should walk directly on the slate; ladders and hooks protect the roof. Tar or roofing cement on slate is a sign of a bad repair that will need to be undone.

Only when a large share of the stone is delaminating does replacement make sense, and even then many Summit owners choose new slate to keep the house’s character. Ask for a written count of failing slates and photos before agreeing to tear-off. Our slate roof repair in Summit starts with exactly that assessment.

Tree strikes are the most common serious roof damage in Summit, and what you do in the first two days decides how smoothly the repair and claim go. Sandy in 2012, Irene in 2011, the September 17, 2018 storm and Isaias in 2020 all brought trees down onto Summit homes.

First, stay safe. If a tree or limb is tangled in wires, stay away and report it; during Isaias city crews had to wait for utilities to de-energize trees before removing them. Do not climb onto a damaged roof. Second, photograph everything from the ground: the tree, where it came from, the roof, gutters and any interior damage. Third, send an emergency request through our contact page. We will tarp the opening once the tree is safely off, protecting slate, copper and the interior from rain.

Fourth, call your insurer and keep receipts for the tree service, tarping and any temporary housing. A tree from a neighbour’s yard is normally claimed on your own homeowners policy for damage to your house. Fifth, do not let anyone rush you into a full replacement while you are stressed. A damaged slate roof can usually be repaired in the area of the impact with matched stone, and copper valleys and gutters can be rebuilt section by section.

Once the tree is removed, we inspect the deck, rafters and attic for structural damage. If rafters or sheathing must be replaced, Summit’s permit chart requires a permit for the plywood work, which we arrange. For storm documentation, our storm damage roof repair report lists each item with photos for your adjuster.

Ice dams are Summit’s most common winter roof problem, especially on the steep, shaded Tudor and Colonial Revival homes of the North Side and the Summit Home Land Company district. Summit’s elevation on the Second Watchung ridge means colder nights and longer freeze-thaw cycles than towns in the valleys below.

An ice dam forms when heat from the house melts snow on the upper roof, the water runs down to the cold eave, and it refreezes. The ridge of ice traps more meltwater behind it, which backs up under slate or shingles and into walls and ceilings. Deep eaves, cathedral ceilings, knee-wall attics and old bathroom vents that dump warm air into the attic all make it worse. During the January 2016 blizzard, which brought 19.0 to 28.3 inches to Union County, many Summit leaks appeared during the following thaw.

The lasting fix is mostly inside the attic: seal air leaks from the house, add insulation and make sure soffit and ridge ventilation work so the roof deck stays cold. On the roof, ice and water shield at the eaves and in valleys during any re-roof or major repair adds protection. Clean gutters before winter so meltwater has somewhere to go. Heat cables can help on a problem section but do not solve the cause. Never chip ice off slate; it breaks the stone. If you have ice dams now, safe removal of snow from the lower roof with a roof rake, and steam removal of the dam itself by a professional, prevent further damage until the root cause can be fixed.

Living in one of Summit’s twelve historic districts does not usually mean your roof repair needs commission approval, but it does mean your roof is part of what makes the district significant. The districts range from the North Side and Hobart Avenue to Deantown, the Silk Mill, Kent Place Boulevard, Prospect Street, Beekman Terrace, the Morris Avenue area, Mountain-Oak Ridge, the Summit Home Land Company area and the Downtown district on the National Register.

Summit’s Historic Preservation Commission reviews applications that go to the Zoning and Planning Boards and supports the historic plaque program and National Register nominations. The Historic Preservation Ordinance adopted on October 7, 2025 as Ordinance 25-3356 adds a Historic Site Verification for demolition and additions, which provides non-binding recommendations on a building’s significance. For straightforward roof repair or replacement on a detached house, the city’s permit chart lists no permit needed, and no board application is involved.

Where roof work does cross paths with review is when it is part of something bigger: an addition, a dormer requiring a variance or a partial demolition. Then the commission’s recommendations may shape materials and roof forms. Even when review is not required, in-kind repair in slate, copper and cedar is usually the best financial choice for a Summit home in a historic district, because buyers here pay for that character. If you are considering replacing slate with asphalt, get an honest written assessment of the slate first, and ask what a matching repair would cost. Our roof inspection includes that comparison.

Deantown and the Silk Mill district are Summit’s working-class historic neighbourhoods, and their roofs are simpler, smaller and more affordable to maintain than the estates on the North Side. Deantown, in east Summit past Overlook Medical Center, grew over about a century from the late 1800s with vernacular Victorian houses and simple front-gabled and shed-roofed homes. The Silk Mill district, around Lafayette Avenue, Aubrey Street, part of Morris Avenue and Weaver Street, holds early twentieth-century worker housing near the surviving silk mill.

Most roofs here are asphalt shingles over old board decks, often one or two layers. Typical issues are worn shingles on south-facing slopes, cracked vent boots, chimney flashing that has pulled out of the mortar, and porch or shed roofs where shingles were installed at too low a pitch. Houses close together mean gutters may drain toward a neighbour, and access for ladders can be tight between homes.

Because these roofs are simpler, targeted repairs are usually economical, and a full replacement is often a straightforward one- or two-day job with no permit needed on a detached house. If you find soft spots in the deck, though, replacing boards or plywood requires a permit under Summit’s chart. When replacing, it is worth upgrading to ice and water shield at eaves, a proper drip edge and low-slope membrane on porch and shed sections. Owners here sometimes worry that historic designation makes repairs complicated; for routine roof work on a detached home it usually does not. See our roof repair NJ homepage for our general approach.