Roof repair in Glen Rock, NJ
Glen Rock’s roofs come from two eras: the steep, many-angled commuter houses built around the two stations between 1905 and 1930, gambrels among them, and the plainer post-war houses on the old farm parcels. Each leaks in its own places. We trace the failing detail, mend it in whatever the roof is made of, and leave a photographed record of what we found.
A gambrel leaks at the bend, not on the slopes.
The Dutch Colonials among the commuter-era houses wear gambrel roofs: a steep lower slope that is nearly a wall, under a shallow upper one. It fits a full second floor under the roof, and it gives water four ways in that a plain gable does not.
Where the pitch changes
Shingles folded over the break crack along the crease and lose their seal. The durable fix is transition metal along the break, with the courses above and below lapped onto it rather than bent across it.
The shallow upper slope
The upper slope can sit near the lowest pitch shingle is permitted on. Water crawls there and wind drives it back under the courses. A repair up there wants membrane underneath, not just a new shingle on top.
A long shed dormer
Many gambrels carry a shed dormer across the lower slope. Its roof is flatter still and ties in just under the break, and each cheek wall needs step flashing woven into every course. Stains above upstairs windows tend to start here.
A flared eave
Some Dutch Colonials sweep outward at the foot of the roof. The flare slows water exactly where melting snow refreezes, so a stain at the top of a ground-floor wall or in the soffit points there first.
On the older houses, start at the chimney.
Most houses of that age were built with a brick chimney, and a century on it is the likeliest leak on an otherwise sound roof. Its metal comes in two parts: base flashing under the shingles, and counter-flashing let into the mortar joints above. As the joints wear, the counter-flashing works loose and water runs in behind it.
Behind a wide chimney, on the uphill face, there should be a cricket: a little peaked saddle that parts the water around the brick. Some older houses never had one; adding it belongs in the chimney repair, not on a list of extras.
A Queen Anne’s roof is a gathering of gables, each meeting of two a valley carrying both slopes’ water. Worn valley metal stains a ceiling some way from the valley, which is why the attic comes before the ladder.
On the stucco Mission-style houses, look where a roof meets a stucco wall or parapet: that flashing sits behind the stucco, and renewing it should be priced as the job it is, not smeared over. A flat section behind a parapet is a membrane roof; see flat and low-slope roofs.
Plainer roofs, different weak points.
The post-war houses toward Fair Lawn and Paramus have simpler roofs, not trouble-free ones. What we check first depends on the house.
If it is a cape
Rooms in the roof lose heat through sloped ceilings. Snow melts, refreezes at the cold overhang and dams the next melt back under the shingles. Membrane along the eave keeps that water out; the heat loss itself is attic work, and we will say so.
If it is a split-level
Where the lower wing’s roof meets the upper wing’s wall, every course needs step flashing and the bottom needs a kick-out to throw water clear of the siding. Without them, water goes into the wall and shows up late.
If it is a ranch
A long, low roof sheds water slowly, so whatever pokes through it matters more: plumbing vents, exhaust hoods, a later skylight. A vent boot’s rubber collar usually fails years before the shingles around it.
Wherever new met old
A porch closed in, a garage joined on, a dormer cut in: each set a newer roof against an older one, and some of those joints were never flashed properly.
Original slate is repaired in slate.
A few houses built before 1930 still carry their first slate, on the main roof or on a bay or porch. When one leaks, the stone is rarely to blame: slate outlives its iron nails and its metal, so the cause is usually a slate that slid once its nail rusted through, a piece that split, or a valley worn thin.
The broken piece comes out with a slate ripper. Its replacement, cut to the same size and thickness and chosen to sit with the old color, is fixed with a copper nail under a bib, or hung on a slate hook. Valleys and chimney metal are renewed in formed metal, never in roofing cement.
When the stone rings dull across whole slopes and flakes at its edges, repair has stopped being good value, and the conversation turns to replacing the roof. The material is covered on our slate roofing page, and the keep-or-replace question in slate restoration versus replacement.
What a repair here usually costs.
Expect $150–$600 for a new plumbing or vent boot, $400–$1,500 to put back lifted or missing shingles or a slipped slate, and $500–$2,500 to re-flash or re-point a chimney. Rebuilding a valley is $800–$4,000+, and a slate repair covering 5–20 slates and a valley is $1,500–$6,000. Taken together, most leak repairs run $400–$3,000. The roof inspection that finds the leak is free, and the fix is priced in writing afterward.
Phone (201) 446-5941 rather than filling in a form; someone will assess it within 24 hours, whatever the season. Our urgent leak repair page covers what to do in the meantime.
If the leak turns out to be more than a leak.
Roof replacement
When the whole field is failing, not one detail on it.
Glen Rock →Free inspection
The whole roof in a written, photographed report.
Inspection →Ridgewood
The village’s pre-war roofs, one border away.
Ridgewood →Glen Rock
The borough, its two housing eras and the rest of the outside.
Town page →How we trace and repair a leak → · The usual sources of a leak → · Gutters in Glen Rock →
Can you get to a leak in Glen Rock quickly?
Yes. We assess an active leak within 24 hours, at any time of year, anywhere in 07452. The first job on that visit is stopping the water, with a temporary cover if the roof is open; the lasting repair waits for a dry roof and slate or shingle that matches. If there is water on the floor as you read this, phone (201) 446-5941.
Our Dutch Colonial leaks near where the roof changes pitch. Why there?
Because the break of a gambrel is the hardest line on the roof to keep tight. Shingles folded over it crack along the bend, and the shallow slope above sends its water straight at the joint. The lasting repair is transition metal along the break, plus membrane under the upper slope if it is near the lowest pitch shingle allows.
Can you repair the original slate on an older Glen Rock house?
In most cases, yes. Slate usually outlives whatever holds it down, so a leak tends to mean a slipped or cracked slate, a worn valley, or tired metal at the chimney. New slates are matched to the old and hung on copper nails or slate hooks. If the stone itself is flaking and splitting across whole slopes, we will show you the photographs that say so.
Do you need to go into the attic?
Yes, whenever there is a way in. Water runs along the underside of the roof boards before it drips, so a ceiling stain marks where it fell, not where it entered. Damp wood, rusted nail points and daylight in the attic lead back to the failed detail, and that detail is what we price.
Is the inspection really free, and what do I get?
Yes. You get a written report with photographs: what is letting water in, what else is close to failing, and what can safely wait. It is yours to keep whether the work comes to us or not.
Find the leak first. Then price the repair.
A free inspection of your Glen Rock roof, the entry point photographed, and a written quote for fixing that detail in the material it is made of.