Our other roof guide covers the signs of a leak. Call (201) 676-3099 or book a free estimate.
Our other roof guide covers the signs of a leak. This one is about the bigger question: is the roof done? A leak is one spot. A finished roof fails everywhere at once, and every repair on the way is money you won't see again. Here are the nine signs we look for on a New Jersey roof, roughly in order from "keep an eye on it" to "call this week."
The 9 signs
Architectural asphalt lasts about 20 to 25 years in New Jersey. Freeze-thaw all winter and July sun take years off the label. If you don't know the age, check your closing papers or look at the neighbors — a block of colonials built in 1998 got its roofs around the same time and is replacing them around the same time too.
Edges turning up is curling. Corners lifting with the middle sunk is cupping. The middle lifting with the edges flat is clawing. All three mean the asphalt has dried out and the mat is shrinking. Wind gets under it, water follows, and it's happening on every shingle, not just the ones you can see.
The gritty coating is the shingle's sunscreen. Shiny black patches on the roof and a sandbar of grit at the downspout mean the sun is now cooking the mat underneath. A little grit on a newer roof is normal. Piles of it on an old one is the countdown.
Brittle shingles snap instead of bending. This is the one that turns a repair into a replacement: to fix one shingle, the roofer lifts the ones above it, and on a brittle roof they break. You can't patch a roof that falls apart when you touch it.
The seal strip that glues each shingle to the one below has failed. One tab on the lawn after a nor'easter is a repair. Tabs after every storm means the roof has stopped holding itself together, and the next big wind takes a whole slope.
Stand across the street and sight down the ridge. It should be dead straight. A dip between the rafters is delaminated plywood; a sag in the ridge line can be the framing. This one is urgent and it's not a shingle problem. Don't walk on it. Call.
Black streaks are algae and mostly cosmetic. Moss is different: it holds water like a sponge, lifts the shingle edges, and freezes in January. A north slope under a big oak in Wyckoff never dries, and a roof that never dries doesn't reach 20.
One leak at a pipe boot is normal wear. A second leak somewhere else, or a repair that leaked again, means the roof as a whole has stopped shedding water, and every patch from there is chasing it around. Two repairs is the honest limit before the third should be a replacement.
New Jersey's code allows two layers of shingles. If yours has two, the next roof has to be a tear-off, whatever a layover crew tells you. And a top layer went on over whatever was wrong with the bottom one. That roof is older than it looks.
The five-minute attic check
See two or more of those and the roof isn't a maintenance item anymore. It's a project with a date on it.
- Go up on a bright day. Flashlight off first: look for daylight through the boards.
- Look for dark streaks down the underside of the deck and along the rafters.
- Press the insulation near the eaves and the chimney. Wet or matted means water has been coming in for a while.
- Look at the deck between the rafters for sag, delaminating plywood or black staining.
- Check for soffit vents at the eaves and a ridge vent at the top. No airflow is why the shingles cooked.
Repair or replace: the honest math
Repair when the roof is under about 15 years old and the problem is in one place: a vent boot, step flashing at the chimney, a few lifted shingles on the windward slope. Typical fixed-price ranges in New Jersey: a shingle or vent-boot repair, $450 – $1,800; chimney or skylight flashing rework, $800 – $3K.
Replace when you count three or more of the nine signs, or the roof is past 20 no matter how it looks. A full architectural-shingle replacement on a typical house runs $9.5K – $22K, more for big or steep roofs — our roof replacement cost guide breaks it down by house type.
Two traps. Paying for repair after repair on a roof that's done — three $1,200 repairs is a third of a new roof with nothing to show for it. And replacing a 12-year-old roof because a guy who knocked after a storm said so. Get an inspection with photos and decide from those.
Don't wait for winter
A tired roof fails in the worst season. Ice dams back water up under curled shingles, snow finds the soft decking, and a February replacement means a wet attic and a drywall bill on top of the roof. Seeing the signs in spring or summer? Schedule the replacement for fall. Most houses take one to three days, and we dry-in every roof we strip before the crew leaves each night.
How First Call checks a roof
- From the ground, from the ridge and from the attic — with photos you keep
- We count the layers, probe the decking and check the ventilation before we say a word about price
- An itemized price on the spot: shingle by brand and line, membrane, underlayment, flashing, ridge vent, decking by the sheet, disposal
- No layovers. Tear-off to the wood, every layer rebuilt
- No deposit — you pay as the work gets done, and you hold the final payment until the walkthrough
- If it's honestly a repair, we say so and price the repair
Questions people ask next
How long does a roof last in New Jersey?
Architectural asphalt, 20 to 25 years with good attic ventilation, closer to 30 on a simple roof. Three-tab, 15 to 20. Standing-seam metal, 50 or more. A roof over a hot, unvented attic lands on the low end of every one of those.
Can I replace just one slope of the roof?
Sometimes. The south and west slopes take the most sun and wear out first, and if the rest is younger it can make sense. The catch is the valleys, ridge and flashing the slopes share. We'll tell you straight whether a one-slope job is a real fix or a way to pay twice.
Does a new roof add value when I sell?
Buyers ask the roof's age before they ask about the kitchen, and a home inspector puts a 22-year-old roof on page one. Some insurers ask for the roof's age at renewal too. A new roof rarely returns every dollar at closing, but an old one costs you the negotiation.
Is a free roof inspection really free?
Yes. We look, we photograph, we tell you what we found and write the price if there's work to do. No fee, no obligation, no one on commission. If the honest answer is "you've got five more years," you'll hear that.
Need roof replacement near you?
If you searched “roof replacement near me” anywhere in New Jersey, that's us. First Call Contracting is based in Paramus and sends its own licensed crew to all 21 counties — written price before work starts, no deposit, a real person on the phone 24/7.
Three of the nine? Get the number before the next storm sets the date.
Free roof inspection with photos — ground, ridge and attic. Itemized price on the spot, no layovers, no deposit.
Or call Alex direct: (201) 676-3099