Roof Leak Repair in Union from $400. $400 to $1,400 for most leaks, and the entry point is rarely above the stain. Free inspection and a written quote.
The junction between an addition and the original house is where most Union leaks start. Two roofs built decades apart to different standards, joined where one abuts the other, usually with a flashing that was adequate when the addition was new and has had no attention since.
Most leak repairs in New Jersey land between $400 and $1,400, and a small isolated one is $400 to $900. Where that money goes wrong is on the diagnosis rather than the price: a patch put where the ceiling is wet is a patch in the wrong place more often than not.



Leak repairs in New Jersey run $400 to $1,400 for most jobs, and a small isolated one is $400 to $900. The number that matters more than the price is how many times this leak has been repaired already: a second attempt is usually a diagnosis problem rather than a workmanship one. The variable here is which roof. A repair to the house is priced normally; a repair to an attached garage or a rear addition often turns out to involve the deck as well, because nobody goes in there in winter and a leak runs unnoticed for weeks.
Water enters at a junction and travels along a rafter before it drops. On a shallow pitch that can be several feet. This is why the roof space is part of the survey and not an optional extra.
Telling us when it leaks. Only in driving rain, only in a thaw, or every time -- each of those narrows the search a long way before anybody goes up, and the search is what you are paying for.
Wet decking, a second story, work over an occupied unit, and sealant from a previous attempt that has to come off before anything can be done properly.
Rear additions and attached garages are the recurring problem here, because the junction where an addition roof meets the original one is where water gets in. A garage roof is also the least-inspected roof on any property: it is usually the oldest covering on the plot and nobody notices until something stored under it is ruined.
Including us. On repair work the checks are different from the ones people apply to a replacement, and cheaper to make.
New Jersey registers home improvement contractors rather than licensing roofers, and the number belongs on every advert and contract. The register is public. The wording is a tell as well: the code says not to call it a license, so a New Jersey roofer advertising their roofing 'license' has not read the rules closely.
'Repair roof' is not a scope. 'Rebuild step flashing to the chimney, replace two vent boots, re-lap the valley' is -- and it can be checked when it is finished, which is the point.
Ask before, not after. A repair aimed at a named cause can be stood behind; a patch aimed at a stain cannot, and a contractor who is vague about the cause will be vague about this too.
Two roofs per property is normal here and the second one is the problem.
The classic Union ice dam is over an attached garage or a rear addition, because those roofs sit next to heated space on one side and unheated space below.
The flat roof in Union is typically over an attached garage, and it has a particular problem: nobody goes in there in winter, so a leak runs for weeks before it is noticed.
The shaded northern slope is the one to look at first on these plots, because mature planting around suburban houses keeps it damp for longer after every thaw.
Where a chimney sits at the junction of the house and an addition, there are two roofs and a masonry stack all meeting in one place.
If the water is coming into a garage or an addition rather than the house, say so -- it changes the urgency and what we bring.
Pre-war chimneys, and eaves with no ice barrier.
Flat roofs behind parapets. Access is the first problem.
Low ground, open water. Which way is the water going?
Post-war and often overlaid, so the eaves are buried.
Steep pitch. Specific details fail, not the field.
Built as a set, so the street is a reliable guide.
The widest age spread. Age decides where to look.
The questions that decide this job, answered up front.
Usually not. Water enters at a junction, runs along a rafter or the top of the ceiling, and drops at the first low point it reaches. On a shallow pitch that can be several feet from the entry point, which is why the roof space gets walked as well as the roof.
Yes, and it is one of the most useful things you can tell us. A roof that leaks only in driving rain is usually failing at an upstand or a lap that is perfectly adequate under vertical water, and that narrows the search a long way before anybody goes up.
Look away from the failure. If the covering across the rest of the slope still lies flat, still holds its granules and is not brittle, the roof has life in it and the repair is the right job. If the slope is generally spent, a repair is money spent twice. Then check the layer count: two coverings is the practical ceiling.
Ask for the New Jersey HIC registration number and check it on the public register. Then ask whether they will look in the roof space, and whether the quote will name the cause rather than just the work. Those three questions cost nothing and they separate most of a shortlist immediately.
Most New Jersey roof repairs run $350 to $1,800, with minor work from $150 to $600. A leak is usually $400 to $1,400 and a small isolated one $400 to $900. Flashing is $300 to $900, or $300 to $1,200 around a chimney, vent or skylight. New Jersey runs above the national average on labor, which is why online calculators read low.
The roof space walked as well as the roof, before any price. The cause named in writing, not just the work.