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NJ Roofing Guide · Updated November 2026

How to Repair Granular Loss on a Roof in New Jersey: Causes, Fixes, Costs and Claims

You cannot glue lost granules back onto an asphalt shingle, so repairing granular loss on a New Jersey roof means replacing the bald shingles, sealing exposed nails and edges, and fixing the cause. Isolated loss from foot traffic, a branch or a small hail strike is usually a spot repair in the $350 to $800 range. Loss spread across a 15 to 20 year old roof means the shingles are wearing out, and planning a replacement makes more sense than patching. Hail-caused loss may be an insurance claim.

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Key takeaways

The Short Version for New Jersey Homeowners

New shingles shed loose surplus granules for six months to two years; GAF and Malarkey both say this is normal and not a defect, so a new NJ roof with sandy gutters is usually fine.
The NJ State Hazard Mitigation Plan counts 495 hail events in New Jersey from 2010 to early 2023, with Burlington, Bergen, Ocean, Monmouth and Camden counties reporting the most.
ARMA strongly advises against coatings or rejuvenators on installed asphalt shingles, so granule restorer sprays are a weak fix for a New Jersey roof.
Replacing a few shingles in NJ typically costs $350 to $800, while a full New Jersey asphalt roof replacement typically runs $8,500 to $17,000.
Shingle repair or replacement on a detached one- or two-family NJ home is ordinary maintenance under N.J.A.C. 5:23-2.7 and needs no permit, but deck replacement does.

In this guide

What Do Shingle Granules Do on a New Jersey Roof?

Granules are crushed, ceramic-coated stone pressed into the asphalt of every shingle, and their main job is to block the sun’s UV from cooking the asphalt underneath. They also add fire resistance, color, some impact protection and, on algae-resistant shingles, a slow release of copper that fights black streaks.

An asphalt shingle is a sandwich. In the middle is a fiberglass mat. That mat is soaked and coated with asphalt, and the top surface is broadcast with mineral granules while the asphalt is still hot. If you want to see how the shingle layer fits with the underlayment, deck, flashing and vents, our guide to the parts of a roof walks through each layer on a typical New Jersey house.

The asphalt is what keeps water out. The granules are what keep the asphalt alive. Asphalt left in direct sunlight oxidizes, loses its oils, shrinks and turns brittle. On a south- or west-facing slope in Mercer, Camden or Middlesex County in July, that process runs fast. Granules shade the asphalt the way sunscreen shades skin, and every bald spot is a patch of roof aging several times faster than the shingles around it.

Granules do several other jobs New Jersey homeowners care about:

UV protection. This is the big one. Once the asphalt is exposed, it dries, cracks and eventually lets water reach the mat.
Fire rating. The mineral surface is part of why asphalt shingles earn a Class A fire rating. That matters in the Pinelands towns of Burlington, Ocean and Atlantic counties, where brush fires are a real seasonal risk.
Weight and wind performance. Granules add mass and help the sealant strips bond the shingle courses together, which matters every time a nor’easter pushes 50 mph gusts across Monmouth and Ocean County.
Algae resistance. Many shingles sold in New Jersey use copper-containing granules. Owens Corning explains that the metal slowly leaches out during weathering and suppresses the algae that cause black streaks.
Color and curb appeal. Uneven granule loss shows as dark, blotchy patches, which matters when you sell a house in a market as competitive as Bergen or Morris County.

Here is the practical point. Granule loss rarely causes a leak right away. The leak comes later, after the exposed asphalt weathers until it cracks. That gives you time to diagnose properly, but it also means a roof shedding heavily is on a countdown. The question every New Jersey homeowner should ask is what kind of loss you have, because the fix for new-roof shedding (nothing) is very different from the fix for hail bruising (an insurance claim) or end-of-life wear (a replacement plan).

Is Granule Loss Normal? How to Tell Normal Shedding From a Problem in NJ

Some granule loss is normal on every New Jersey roof: heavy shedding in the first months after installation and slow, even loss as shingles age. Loss is a problem when it is concentrated in spots, shows dark or bare asphalt, starts suddenly after a storm, or appears on a roof only a few years old.

Granules in the gutter are a symptom with five common causes. The pattern on the roof tells you which one you have, and each one leads to a different repair, claim or no action at all. A New Jersey roofer looks at where the loss is, what shape it takes, how old the roof is and whether anything else on the property got hit.

Read the pattern before you panic. Even, gradual loss across a whole slope points to age. Round, random spots that ignore shingle edges point to hail. Scuffed, crescent-shaped bare areas near a chimney, satellite dish or skylight point to foot traffic. Bald patches in straight lines or in one bundle’s worth of shingles on a young roof point to a product or storage problem. Loss right after installation, with no bare spots, is surplus granules washing off.

Timing helps too. If you cleaned the gutters in the fall and they are full of granules again after one winter, the roof is still shedding. If the sand appeared after a single June thunderstorm in Burlington County, take hail seriously. If your roof went on in 2008 or 2009, a lot of the developments built across Ocean, Monmouth and Gloucester counties in that era are now at the age where architectural shingles start to show general wear.

The cards below explain each of the five patterns. Use them to describe what you see when you send photos to a roofer, and it will speed up the diagnosis.

New-roof shedding (normal)

Manufacturers apply more granules than the asphalt can hold. GAF calls these surplus granules riders or hitchhikers, and Malarkey says the sloughing can last six months to two years depending on climate. A new New Jersey roof with sandy gutters and no bare spots needs no repair. Clean the gutters and check again in a few months.

Age-related wear (expected)

Sun, heat, rain and freeze-thaw slowly loosen granules across the whole roof. Loss is fairly even, heaviest on south and west slopes and at shingle edges. IBHS lists edge granule loss as normal weathering. On a New Jersey roof past about 15 years, this means planning ahead, because spot repairs will not reverse it.

Hail impact (possible claim)

Hail leaves random, roughly round marks where granules are knocked away, sometimes with a soft bruise you can feel. IBHS says collateral dents on gutters, downspouts, AC fins and metal vents help confirm a hail event. Ridge caps often show it first. This is the pattern to document for New Jersey homeowners insurance.

Foot traffic and mechanical scuffs

Satellite installers, chimney sweeps, solar crews and painters scuff granules off when they walk on hot or brittle shingles. Look for bare crescents in a path from the ladder to the chimney or dish. This is workmanship damage, so the contractor who did it may be responsible. Repair is usually a few replacement shingles.

Manufacturing or storage defect

Bare patches on a roof only a few years old, often in one bundle’s color run or across one slope, can point to a defect. InspectApedia notes exposed fiberglass mat as a common sign. Shingles left in the rain on a pallet can also shed early. These cases go to the manufacturer’s warranty department with photos and invoice.

What Causes Shingle Granule Loss in New Jersey?

In New Jersey, granule loss is driven mostly by summer heat and UV, hail from June thunderstorms, nor’easter wind, tree branches rubbing the roof, and algae and moss on shaded lots. At the Shore, salt-laden wind adds stress to edges, flashing and fasteners.

New Jersey sits in an awkward spot for asphalt shingles. Summers are hot and humid. Winters bring repeated freeze-thaw cycles, especially in Sussex, Warren, Morris and Passaic counties. The coast gets nor’easters and the occasional tropical storm. The interior gets summer thunderstorms with hail. And a huge share of the state’s housing sits on wooded lots under mature oaks, maples and pines. Each of these hits granules in a different way, which is why a roof in Sparta wears differently from a roof in Brick or Cherry Hill.

Heat and UV. Asphalt is softest in July and August. Granules embedded in soft asphalt loosen more easily under foot traffic, hail or branch rub. A poorly ventilated attic makes this worse, because the shingles get cooked from below as well as above. Many 1950s and 1960s capes, ranches and split-levels across Bergen, Union and Middlesex counties were built with minimal soffit venting, and older attics there often run very hot in summer.

Freeze-thaw. Water that soaks into a thinning granule surface freezes and expands overnight, then thaws in the afternoon sun. InspectApedia notes this speeds wear in areas that have already lost granules. Northwest New Jersey sees many of these cycles each winter.

Hail. New Jersey does get hail, mostly small, and most of it in late spring and summer. The next section covers the sourced data, including which counties report the most events.

Nor’easter and storm wind. Wind lifts shingle tabs, breaks sealant bonds and drives grit and debris across the surface. The New Jersey State Hazard Mitigation Plan records a December 26, 2012 storm with northeast winds that gusted to 74 mph in Brick, Ocean County. Repeated flexing of tabs in storms like that cracks the asphalt along the nail line and loosens granules at the edges.

Trees. Branches that touch the roof act like sandpaper every time the wind blows. On wooded lots in Montclair, Summit, Princeton, Mendham or Haddonfield, it is common to find a strip of bald shingles exactly where a limb overhangs. Falling acorns and pine cones also chip granules over time.

Algae and moss. Shaded North and Central Jersey lots stay damp. Black streaks from the cyanobacterium Gloeocapsa magma are mostly cosmetic, and Owens Corning says it has not seen evidence that algae affects shingle performance. Moss is different: it holds water against the shingle and its roots work under granules. Aggressive scraping or pressure washing to remove either one strips granules faster than the growth ever did.

Salt air at the Shore. From Sandy Hook to Cape May, roofs face steady wind, salt spray and blowing sand. This is general practice rather than a measured granule statistic, but Shore roofers see more edge wear, faster corrosion of exposed nails and flashing, and more wind-lifted tabs on beachfront and bayfront homes.

Summer heat and UV

Soft summer asphalt releases granules more easily, and attics with poor soffit and ridge venting push shingle temperatures higher from below. South and west slopes on older Bergen, Union and Middlesex split-levels and ranches usually show wear first. Better attic ventilation is part of any lasting fix.

Hail from summer thunderstorms

Most New Jersey hail is under one inch, but repeated small hail adds up, and stones near one inch were reported in Burlington and Hunterdon counties in 2019 and 2021. Random, round bald marks with dented gutters or AC fins are the signature to photograph.

Nor’easter and coastal wind

Long-duration northeast winds flex shingle tabs for hours. Broken seal strips, creased tabs and edge granule loss follow, especially on exposed Monmouth, Ocean and Atlantic County homes. A wind-lifted tab that keeps flapping wears bare quickly and can tear off in the next storm.

Tree branches and debris

Overhanging limbs on wooded North and Central Jersey lots scrub granules off in a strip under the branch. Leaves and needles packed in valleys hold moisture and grit. Trimming branches back several feet from the roof is one of the cheapest ways to protect shingles.

Algae, moss and lichen

Shaded, north-facing slopes in Morris, Essex, Passaic and Somerset counties grow streaks and moss. Streaks are mostly cosmetic. Moss and lichen hold water and pry at granules. Gentle cleaning is fine; scrubbing and pressure washing cause the granule loss you were trying to prevent.

Salt air and blowing sand

Shore homes on Long Beach Island, the barrier islands and the bay towns face constant wind, salt and sand. Edges, ridges and exposed fasteners take the brunt. Corrosion-resistant nails, sealed edges and regular inspections matter more here than inland.

Does Hail Really Cause Granule Loss in New Jersey?

Yes, though large damaging hail is less common in New Jersey than in the Plains states. The state’s hazard plan counts 495 hail events from 2010 to February 2023, and new IBHS research shows that repeated small hail can strip enough granules to make aged shingles far more vulnerable to the next storm.

Homeowners often hear that New Jersey is not hail country. That is partly true and partly misleading. The New Jersey State Hazard Mitigation Plan describes the state as having relatively low potential for significant hail, says most hail here is small and typically under one inch, and notes that golf-ball-sized or larger hail does not occur every year. The same plan lists 495 hail events statewide in NOAA’s database from 2010 through February 2023. The counties with the most reported events were Burlington (68), Bergen (47), Ocean (47), Monmouth (40) and Camden (37). The plan identifies June 17 as the date of highest collective hail risk, with risk building through spring, peaking in summer and fading by winter.

Two National Weather Service Mount Holly event reviews show what a typical New Jersey hail day looks like. On June 2, 2019, storms dropped hail across South Jersey, with estimated one-inch hail at Columbus and near Medford Lakes in Burlington County and three-quarter-inch hail measured at Manahawkin in Ocean County. On July 17, 2021, a trained spotter reported one-inch hail near Lambertville in Hunterdon County and 0.88-inch hail in Hopelawn, Middlesex County. If you own a home in Burlington County, which leads the state in reported events, a careful look after every summer hailstorm is worth the time.

Size matters for claims. Insurance Journal’s coverage of the 2025 IBHS study notes that engineers have generally considered most shingle damage to come from hail 1.5 inches or larger. The same IBHS research, published in Frontiers in Materials, found something important for a state like New Jersey that gets frequent smaller hail. Repeated hailstones under one inch caused cumulative granule loss greater than a single two-inch impact, and shingles that had been both weathered and hit by small hail were roughly ten times more susceptible to damage from a later severe hailstorm. IBHS also found impact-resistant shingles did only slightly better against that cumulative granule loss.

What does that mean for you? Small hail usually does not produce an obvious claim on its own. Over years, though, it can be part of why a 14-year-old roof in Cherry Hill or Toms River looks older than its age. When a stronger storm finally does produce clear hail bruising, an adjuster will still separate fresh impact damage from long-term wear, so documentation and dates matter. Our storm damage roof repair inspections focus on exactly that distinction, with photos of collateral damage on gutters, vents and AC units that an insurer will ask to see.

How Do You Check for Granule Loss Safely From the Ground and Gutters?

Stay off the roof: check gutter and downspout outlets for sand, scan each slope with binoculars from the yard, look for dents on metal around the house, and compare what you see over time. A roofer can walk the roof safely and photograph close-ups if anything looks wrong.

Walking on your own roof is the fastest way to turn a granule question into an emergency room visit. It also causes the problem you are investigating, because boots scuff granules off warm or brittle shingles. Most of what you need to know can be learned from the ground, a ladder at the gutter line, and a pair of binoculars.

Ladder safety first. If you check gutters yourself, set the ladder on firm, level ground, extend it at least three feet above the gutter, keep three points of contact, and never lean on the gutter itself. Skip it on wet, icy or windy days, and skip it entirely on a second story if you are not comfortable. Many New Jersey colonials and split-levels have gutter lines 18 to 22 feet up, which is a long fall.

Take the gutter test seriously, but read it correctly. A handful of dark sand at the downspout outlet after a heavy rain is normal on most roofs. A layer you can scoop like beach sand on a roof over five years old means the roof is shedding steadily. If gutters were cleaned recently and refill quickly, the shedding is ongoing. Remember Malarkey’s point that granules in gutters can also be left over from a previous roof if the gutters were never cleaned out after a replacement.

Use photos as your measuring stick. No standard says how many granules are too many. What a roofer can judge is change over time. Take dated photos of each slope from the same spots in the yard every spring and fall. Comparisons after a nor’easter or a summer hailstorm make insurance and warranty conversations much easier.

When you see bald patches, curling, cracking or anything that looks like hail marks, book a roof inspection with close-up photos. A roofer can feel for bruising, check the attic for daylight or staining, and see whether the issue is a dozen shingles or the entire roof.

1. Check downspout outlets and splash blocks

Look where downspouts discharge onto the driveway, walkway or splash block after a heavy rain. A dark, sandy fan of granules is easy to spot on light concrete. Note the amount and date. Compare it with what you see after the next storm, especially after a June or July thunderstorm.

2. Scoop a sample from the gutter

From a properly set ladder, scoop a handful of debris from the gutter near a downspout. Granules feel like coarse sand and match the shingle color. Ice and water shield sand, pine needle grit and pollen look different. Bag and label it if you might file a claim.

3. Scan every slope with binoculars

Stand back far enough to see each slope at an angle in good morning or late-afternoon light. Look for dark blotches, shiny black asphalt, exposed fiberglass, lifted or missing tabs, curled edges and bare strips under branches. Photograph anything odd with your phone’s zoom.

4. Look for hail evidence on metal

Walk the house. Check aluminum gutters and downspouts, AC condenser fins, metal roof vents, mailbox, grill lid and car hood for fresh round dents or spatter marks. IBHS says this collateral evidence helps confirm hail occurred. Photograph dents with a coin for scale.

5. Check the attic on a sunny day

With a flashlight, look at the underside of the roof deck for water stains, darkened plywood, wet insulation or pinpoints of daylight. Note the attic temperature and whether soffit and ridge vents are clear. An overheated, poorly vented attic speeds up shingle aging from below.

How to Repair Granular Loss on a Roof: What Actually Works in NJ

The repairs that work are replacing the damaged shingles, sealing small exposed spots and nail heads, and fixing the cause such as a rubbing branch or a hot attic. Loose granules cannot be re-bonded to old asphalt, so any fix either replaces the surface or protects what is left.

When people search how to repair granular loss on a roof, they are often hoping for a spray or a bag of granules they can broadcast back on. That is the wrong mental model. Granules are bonded into the asphalt during manufacturing, at high temperature, while the asphalt is fluid. Once they fall off, nothing you can buy recreates that bond on an installed shingle. What a New Jersey roofer can do falls into four categories, explained in the cards below.

Spot shingle replacement is the real repair. A roofer breaks the seal on the course above, removes the nails holding the damaged shingle and the nails from the course above that pass through it, slides in a new shingle, nails it to the manufacturer’s pattern and reseals the tabs. Done well, the repair is watertight and lasts as long as the surrounding roof. On architectural shingles, the main challenge is color match. Shingles weather, colors are discontinued, and a new shingle on a 12-year-old roof may stand out for a year or two. Good roofers keep leftover bundles from your original installation if you have them, or source the closest current blend.

Brittle shingles change the plan. On a roof older than about 15 years, the shingles around the damaged ones may crack when the roofer lifts them to work the nails. Ask your roofer to test flexibility first. If neighboring shingles break, a planned spot repair can grow into a section repair, and sometimes the honest answer is that the slope is near the end of its life.

Fixing the cause. Granule loss under a branch comes back if the branch stays. Shedding from an overheated attic continues until ventilation improves. Scuffing around a satellite dish returns if the installer keeps walking the same path. A repair that does not address the cause is money spent twice.

For the full menu of shingle work, including tab reseals, nail pops and ridge cap replacement, see our shingle roof repair in New Jersey page.

Replace individual shingles

The most reliable repair for isolated bald spots, hail hits, branch scrub or scuffs. The roofer removes the damaged shingles, installs matching ones, nails them to the manufacturer’s pattern and reseals the tabs. Expect about $350 to $800 for a small New Jersey repair.

Seal exposed nails and small spots

Exposed nail heads, cracked tab corners and tiny bare spots can be sealed with a manufacturer-compatible roofing sealant, sometimes with matching granules pressed in for looks. This protects the spot from UV and water for a time. Treat it as a stopgap on an otherwise sound roof.

Replace ridge and hip caps

Ridge caps take the most sun, wind and hail and often bald first. Replacing a run of worn ridge caps is a common, affordable repair on New Jersey roofs and often done together with checking the ridge vent beneath them for damage or blockage.

Fix the cause

Trim branches back from the roof, add or clear soffit and ridge vents, reroute foot traffic with walk pads for solar or dish service, and replace any loose flashing. Without this step, granule loss in the same spot returns within a few seasons.

Do Granule Restorer Sprays, Coatings or Rejuvenators Work on NJ Roofs?

They do not put granules back, and the Asphalt Roofing Manufacturers Association strongly advises against applying any coating or rejuvenator over installed asphalt shingles. At best, a rejuvenator may slow further loss on a roof that still has life left. At worst, it can affect fire rating, algae resistance or your shingle warranty.

New Jersey homeowners see a lot of advertising for soy-based rejuvenators, acrylic shingle coatings and granule restorer kits. Before you spend money, read what the shingle industry says. ARMA’s position statement says it strongly advises against the field application of any type of coatings or rejuvenators over installed asphalt shingles. ARMA warns that field treatments may harm fire classification, algae resistance and impact resistance, that coating shrinkage can cause curling and cupping and loosen granules, and that non-permeable coatings may trap moisture. It calls the claimed benefits of longer life, energy savings and leak repair unproven, and tells homeowners to check with the shingle manufacturer and local authorities first.

Independent reviewers are more mixed. Roof Observations reviewed rejuvenation treatments and called them partially effective: they may keep shingles more flexible and help existing granules stay put on a roof in early to mid-life, but they do not restore lost granules, do not fix leaks at flashing, valleys or vents, and do not replace missing shingles. That review lists typical dealer pricing around $0.80 to $1.25 per square foot, or roughly $1,600 to $2,500 for a 2,000 square foot roof, and notes that applications generally need temperatures above about 50 degrees and a day or two of dry weather. In New Jersey, that limits the window to late spring through early fall.

Where coatings do belong. GAF’s technical bulletin C-31 describes a coating repair for hail-related granule loss on granule-surfaced membranes: an approved liquid coating is applied to areas of excessive granule loss, and colored granules can be broadcast into the wet coating. That method is meant for granule-surfaced roof membranes such as the cap sheets on low-slope roofs, the kind on many New Jersey rowhouse additions, porch roofs and commercial buildings, and GAF says it is not appropriate where there are cuts, punctures, tears or cracks. It is a different product from the steep-slope shingles on most homes.

Our view for New Jersey roofs. If your roof is young and has isolated bald spots, replace those shingles. If it is old and shedding everywhere, a spray will not change the timeline in a way you can rely on, and the money is often better saved toward a replacement. If you are still curious about a treatment, get the shingle manufacturer’s written position for your product line first, and ask your insurer whether it affects coverage.

When Does Granule Loss Mean You Need a New Roof in New Jersey?

Granule loss means replacement when it is widespread across most slopes, the asphalt or fiberglass is exposed in many places, the shingles are brittle or curling, and the roof is roughly 15 to 20 years old or more. At that point spot repairs just chase the next bald patch.

There is no official percentage that triggers a new roof. Roofers make the call by weighing several things together. Here are the signs that push a New Jersey roof from repair to replacement:

Loss on every slope. If the south, west and east slopes all show thinning, the roof is aging as a whole system. Replacing 30 shingles on one slope will not change that.
Exposed mat or black asphalt in many spots. Shiny black patches or visible fiberglass mean the protective layer is gone and UV is attacking the waterproofing directly.
Brittleness. If shingles crack when a roofer lifts a tab on a mild day, repairs will damage as many shingles as they fix.
Curling, cupping and cracked tabs. These usually travel with heavy granule loss on older roofs and are a sign of a dried-out shingle.
Age. Architectural shingles on New Jersey homes commonly last into their 20s with good ventilation, and 3-tab roofs often less. A roof installed around 2005 is in the zone where widespread loss is expected.
Leaks or deck staining. If water has reached the deck, the decision is more urgent and may involve sheathing work.

Timing a replacement around the seasons. In New Jersey, the best months for shingle work are generally April through November, when shingles seal properly. If your roof is shedding heavily in October, a careful plan is often to make any urgent repairs, get through winter, and replace in spring. If loss is combined with active leaks, do not wait for spring. Read more on our roof replacement in New Jersey page.

Permits and code. Since March 5, 2018, removing and replacing shingles on a detached one- or two-family house is ordinary maintenance under N.J.A.C. 5:23-2.7, with no permit or inspection needed. A permit is needed if sheathing or rafters are replaced, if the building is a townhome or other attached or multi-family structure, or if someone proposes a third layer, since New Jersey allows a maximum of two. Ordinary maintenance does not waive code compliance, so the new roof still has to meet the code and the manufacturer’s installation rules, including ice barrier at the eaves where required.

Should you overlay? Putting a second layer over a granule-worn roof is legal in New Jersey if there is only one layer now, but it hides deck problems and adds weight. Most roofers prefer a tear-off when shingles are badly worn, so they can inspect and fix the deck and install new underlayment.

Will NJ Homeowners Insurance Pay for Granule Loss From Hail?

New Jersey homeowners policies usually cover sudden damage from hail or wind and usually exclude wear, age and neglect, so hail-caused granule loss may be covered while age-related shedding is not. The outcome depends on proof that a specific storm caused the damage, your deductible, and your policy wording.

Adjusters see a lot of granule loss, and their first job is separating storm damage from ordinary weathering. IBHS lists the look-alikes that are not hail damage: granule loss along shingle edges from weathering, uniform wear or discoloration, manufacturer defects, marks from tools or installation, and granules washed off by heavy rain. Hail damage is a random pattern of impact marks, bruises or cracks, often with matching dents on gutters, vents and AC units. Your claim succeeds or fails on whether the evidence fits that hail pattern and ties to a dated storm.

How to document a hail claim in New Jersey. The NJ Department of Banking and Insurance storm-claim guidance tells homeowners to photograph all damage before throwing anything away, keep damaged items until the insurer can inspect them, make reasonable temporary repairs to prevent further damage, save every receipt, and keep written notes of every conversation about the claim. For a roof, that means:

Write down the storm date and time. NWS Mount Holly local storm reports or a local news story help tie hail to your town.
Photograph collateral damage first: dents on gutters, downspouts, AC fins, metal vents, mailboxes and cars, with a coin or tape measure for scale.
Bag and label a gutter granule sample with the date.
Have a roofer document the roof itself with close-ups of impact marks, bruises and damaged ridge caps, plus wide shots so the adjuster can see the pattern.
Report the claim promptly. Delay makes it harder to prove the damage came from that storm and not later weather.
Be present for the adjuster’s inspection and have your roofer there if you can.

Deductibles and coastal policies. Many policies on Shore homes in Ocean County, Monmouth, Atlantic and Cape May carry separate wind or hurricane deductibles, often a percentage of the dwelling coverage. A hail claim from a summer thunderstorm usually falls under the standard deductible, but check your declarations page. If the repair estimate is close to the deductible, filing may not make financial sense.

Public adjusters and disputes. DOBI notes that public adjusters must be licensed by the department, are paid a percentage of your settlement, and must list services and a maximum fee in their contract. Hiring one is optional. If you believe a claim was handled unfairly, DOBI’s consumer assistance office at dobi.nj.gov takes inquiries and complaints. Your policy and your agent have the final word on coverage, so read the exclusions before you start.

Can You File a Manufacturer Warranty Claim for Shingle Granule Loss in NJ?

Yes, if the loss comes from a manufacturing defect, such as bare spots on a young roof without any storm or foot-traffic cause. Manufacturer warranties do not cover normal new-roof shedding, light to moderate loss that changes color shading, or damage from weather, installation errors or neglect.

Shingle warranties are written to cover defects in the product, and granule loss is one of the most common things homeowners ask about. The manufacturers have been clear on the basics. GAF’s technical bulletin on granule loss on new shingles says early loss of surplus granules is normal, is not a manufacturing defect, and presents no potential for premature aging. GAF advises waiting several months to see whether shedding settles down, and says to contact its warranty services if loss remains significant months after installation, if the roof changes color from granule loss, or if other damage appears. It also states that its warranty covers manufacturing defects, does not cover shading caused by light to moderate granule loss, and that severe loss caused by a defect may be covered under the limited warranty terms. Malarkey’s bulletin likewise says surplus granule sloughing is not a defect, and tells owners to contact its warranty department if bare asphalt appears without unusual weather.

What a strong New Jersey warranty claim includes:

The installation invoice or contract with the date, the shingle brand, product line and color. Under N.J.S.A. 56:8-151, your New Jersey home improvement contract should already show the contractor’s legal name, address and registration number, which helps.
Any warranty registration paperwork, especially for enhanced system warranties that require registration by a certified installer.
Dated photos showing the bare areas, wide shots of the pattern and close-ups of exposed asphalt or mat.
Bundle wrappers or lot numbers if any leftover shingles are in your garage. These help the manufacturer trace production runs.
A short written note from a roofer explaining why the pattern does not fit hail, wind, traffic or ventilation problems.

What usually gets a claim denied. Manufacturers look at attic ventilation, nailing, the underlayment and whether the shingles were installed to their instructions. Poor ventilation, which is common in older New Jersey capes and split-levels, can void or limit coverage. Field-applied coatings may also affect coverage, which is one more reason to check with the manufacturer before using one. Damage from hail and wind goes to your homeowners insurer, not the manufacturer. Damage from a contractor walking the roof goes to that contractor.

Workmanship versus product. The manufacturer covers the shingle. Your installer covers how it was put on. Roof Repair SNJ gives a written workmanship warranty of 2 years on repairs and 10 years on full replacements, which sits alongside, and separate from, the shingle maker’s warranty.

How Much Does It Cost to Fix Granule Loss in New Jersey?

As of November 2026, replacing a few granule-damaged shingles in New Jersey typically costs $350 to $800, and a full asphalt roof replacement typically runs $8,500 to $17,000. The deciding factors are how widespread the loss is, roof age, pitch and height, and whether there is hidden deck damage.

Granule loss itself is not a line item. You pay for whatever the diagnosis says needs to happen, from nothing at all to a new roof. The ranges below are planning ranges used across our New Jersey pages, not quotes. For a deeper breakdown of every repair type, see our NJ roof repair cost guide.

What moves the price up or down in New Jersey:

Color match. Discontinued architectural colors may mean extra time sourcing the closest blend, or replacing a whole slope for appearance.
Brittleness. Older shingles that crack when lifted turn a small repair into a section repair.
Roof height and pitch. A steep 12/12 Victorian in Cape May or Montclair needs more safety setup than a low ranch in Toms River.
Access. Tight lots in Hoboken, Jersey City or the older Shore towns can add time for ladders, staging and debris removal.
Hidden damage. If water has already reached the deck, a rotted section adds $500 to $2,000 or more, and deck replacement on a full re-roof means a permit.
Insurance. If hail caused the damage and the claim is approved, your cost may be your deductible, but only an approved claim tells you that.

New Jersey replacement pricing for context: the Roof Observations New Jersey cost guide (January 2026) puts installed architectural shingles, including tear-off, at about $7.95 per square foot and 3-tab at about $7.20. Fixr’s 2026 New Jersey data puts a typical replacement at $8,500 to $17,000, with an average of about $13,500 for roughly 1,700 square feet of roof. Every roof we look at gets a free inspection with photos and a written, itemized quote, so you can compare the repair path and the replacement path side by side.

Inspection and diagnosis

A roofer checks the pattern, photographs damage and tells you whether you have normal shedding, wear, hail or a defect. Roof Repair SNJ provides this free with photos and a written quote, which also helps with insurance and warranty claims.

Few shingles or ridge caps: $350 to $800

Replacing a handful of bald, scuffed or hail-hit shingles or a short run of ridge cap on a typical New Jersey two-story. Price rises with steep pitch, third-story height, sourcing a discontinued color and brittle surrounding shingles that crack when lifted.

Single-source leak repair: $400 to $1,500

If granule loss has progressed into a leak at one spot, the repair includes the shingles, underlayment and any flashing involved. A related pipe boot or vent flashing fix runs about $250 to $600 on New Jersey homes.

Rejuvenator treatment: about $0.80 to $1.25 per sq ft

Roof Observations’ figure for dealer-applied rejuvenators, roughly $1,600 to $2,500 on a 2,000 square foot roof. It does not restore granules, ARMA advises against it, and New Jersey weather limits application to warm, dry months. Check your shingle manufacturer’s written position first.

Full replacement: $8,500 to $17,000

Typical New Jersey asphalt re-roof range from Fixr, with an average near $13,500. Architectural shingles run about $7.95 per square foot installed with tear-off. Deck repairs, a second layer removal or steep pitch push the number higher.

How Do You Prevent Shingle Granule Loss on a New Jersey Home?

Keep people off the roof, trim branches, ventilate the attic, clean gutters twice a year, treat algae and moss gently, and get a roof check after big hail or wind storms. You cannot stop aging, but you can stop the avoidable loss that shortens a New Jersey roof’s life.

Most premature granule loss in New Jersey is avoidable. The roofs that age fastest usually have one or two things working against them: an overhanging tree, an attic with no real ventilation, a pressure-washing habit or a steady stream of contractors walking on them. Fix those and the shingles have a fair chance to reach their expected life.

A simple New Jersey roof calendar. In spring, after the last freeze, check downspout outlets and scan the slopes for winter damage, lifted tabs and moss. In early summer, before peak hail season around mid-June, trim branches and photograph the roof so you have a baseline. After any summer hailstorm in your town, walk the property and look for dents on metal. In fall, after leaf drop, clean gutters and valleys, which matters a lot in wooded towns across Morris, Bergen, Somerset and Hunterdon counties. In winter, watch for ice dams along the eaves, which are a ventilation and insulation warning.

Gentle cleaning only. Owens Corning recommends a 1:1 solution of bleach and water for algae streaks, sprayed on, left for about 10 to 20 minutes and rinsed, with plants covered and rinsed, and says not to scrub or pressure wash. Results are often temporary. If you have heavy moss or would rather not work at height, our roof cleaning in NJ service uses low-pressure methods that are safe for shingles.

Choosing the next roof. If you are replacing a roof in a shaded North Jersey lot, algae-resistant shingles with copper granules help with streaks. At the Shore, ask about high-wind installation, sealed starter strips and corrosion-resistant fasteners. Impact-resistant shingles may help against larger hail and some insurers offer credits for them, but the IBHS study found only slight improvement against cumulative granule loss from small hail, so set expectations accordingly.

Limit foot traffic

Ask satellite, solar, chimney and gutter contractors to use ladders and walk pads, avoid walking on hot afternoons, and keep paths away from valleys. Scuffing on a hot July day in New Jersey can strip granules in a single visit.

Trim trees back

Keep branches at least several feet off the roof and away from valleys. On wooded lots in Essex, Morris and Mercer counties, this one step prevents the strips of bald shingles that roofers often find under overhanging limbs.

Ventilate the attic

Balanced soffit intake and ridge exhaust lowers shingle temperatures and reduces winter ice dams. Many older New Jersey capes and split-levels have blocked soffits or no ridge vent, and correcting that protects both shingles and warranty coverage.

Clean gutters and valleys twice a year

Clogged gutters and leaf-packed valleys hold water and grit against shingle edges. Fall cleaning after leaf drop and spring cleaning after winter storms keep water moving and let you watch how many granules are coming off.

Inspect after major storms

After summer hail, a nor’easter or a tropical storm, check for dents, lifted tabs and new bald spots. Photograph and date everything. Early repairs are cheaper and much easier to connect to a specific storm for an insurance claim.

How Do You Choose a New Jersey Roofer for Granule Loss Repair?

Hire a registered New Jersey home improvement contractor who shows you photos of the actual damage, explains which of the five granule-loss patterns you have, and gives a written, itemized quote. Be wary of anyone who pushes a full replacement or a coating before explaining the cause.

Granule loss is one of the easiest roof issues to oversell, because almost every roof has some. A trustworthy roofer explains whether your roof is shedding normally, wearing out, storm-damaged or defective, and only then recommends something. Here is how to check that the roofer you hire is doing the job properly and legally in New Jersey.

Check the registration. New Jersey requires home improvement contractors to register with the Division of Consumer Affairs. Registration numbers begin with 13VH, and registered contractors must carry at least $500,000 in commercial general liability insurance. You can verify a number on the state’s license verification site in a couple of minutes.

Get it in writing. Under N.J.S.A. 56:8-151, a New Jersey home improvement contract must be written and signed, show the contractor’s legal name, business address and registration number, list the total price, include a copy of the insurance certificate, and give you three business days to cancel. That applies to a $600 shingle repair as much as a full replacement.

Watch for storm chasers. After a hail event, out-of-state crews sometimes knock on doors in Burlington, Camden, Ocean and Monmouth County neighborhoods promising a free roof through insurance. Ask for the 13VH number, never sign an assignment of benefits on the spot, and remember that DOBI’s guidance says hiring a public adjuster is optional and that public adjusters must be licensed.

Questions worth asking any roofer:

Which pattern of granule loss do you see, and what photos show it?
Is this repairable with spot replacement, or are the surrounding shingles too brittle?
Is there evidence of hail I should report to my insurer?
What caused it, and how will you fix the cause?
Do you need a permit for this job under N.J.A.C. 5:23-2.7, and if so who pulls it?
What workmanship warranty do you put in writing?

Roof Repair SNJ has worked on New Jersey roofs for more than 25 years and repaired or replaced over 5,000 of them across all 21 counties. You can find your county on our New Jersey service locations page, or start with an overview of our roof repair NJ services.

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FAQ

How to Repair Granular Loss on a Roof in New Jersey: Frequently Asked Questions

Is it normal to find shingle granules in gutters in New Jersey?

Yes, in small amounts. New roofs shed surplus granules for six months to two years, and older roofs lose a little after heavy rain. It becomes a concern when gutters refill quickly with sand, when you see bald or dark patches on the roof, or when granules appear right after a hailstorm or nor’easter.

Can you replace lost granules on asphalt shingles?

No. Granules are bonded into hot asphalt during manufacturing, and nothing restores that bond on an installed shingle. A roofer can replace the damaged shingles or seal small spots with compatible sealant and matching granules for appearance. Sprays and coatings sold as granule restorers do not recreate the original surface.

How much does it cost to fix granule loss on a roof in NJ?

Replacing a few damaged shingles or ridge caps in New Jersey typically costs $350 to $800. A leak caused by advanced granule loss usually runs $400 to $1,500. If loss is widespread on an older roof, a full asphalt replacement in New Jersey typically costs $8,500 to $17,000, averaging about $13,500.

Does homeowners insurance cover granule loss in New Jersey?

Usually only when a sudden event such as hail or wind caused it. New Jersey policies generally exclude wear, age and neglect, so normal aging is not covered. Document the storm date, photograph dents on gutters and vents, keep a gutter sample, and have a roofer photograph the roof before you file.

How can I tell hail damage from normal granule loss?

Hail leaves random, roughly round marks that ignore shingle edges, sometimes with soft bruises, and usually comes with fresh dents on gutters, downspouts, AC fins or metal vents. Normal wear is even, heaviest at shingle edges and on sunny slopes. IBHS lists edge loss and uniform wear as weathering, not hail.

How often does it hail in New Jersey?

Hail is fairly common but usually small. The New Jersey State Hazard Mitigation Plan lists 495 hail events from 2010 to February 2023 and says most New Jersey hail is under one inch. Burlington, Bergen, Ocean, Monmouth and Camden counties reported the most events, and risk peaks in mid-June.

Do roof rejuvenator sprays work on New Jersey roofs?

Not for lost granules. The Asphalt Roofing Manufacturers Association strongly advises against coatings or rejuvenators on installed shingles and calls the claimed benefits unproven. Independent reviews say they may help a mid-life roof keep its remaining granules, but they do not fix leaks, bald spots or missing shingles.

Do I need a permit to replace shingles with granule loss in NJ?

Usually not for a detached one- or two-family home. Under N.J.A.C. 5:23-2.7, repairing or replacing roof covering is ordinary maintenance. You need a permit for deck or structural repairs, attached townhomes and multi-family buildings, or a third layer. The work must still meet New Jersey code.

Will a shingle manufacturer warranty cover granule loss?

Only when a manufacturing defect caused it. GAF and Malarkey both say normal new-roof shedding is not a defect, and GAF says light to moderate loss that changes shading is not covered. Bare spots on a young roof without storm or foot-traffic causes are worth a claim with photos and your invoice.

Should I walk on my roof to check for granule loss?

No. Walking on shingles, especially on a hot New Jersey summer day, scuffs off granules and risks a serious fall. Check downspout outlets, scoop gutter debris from a properly set ladder, scan slopes with binoculars and look for dents on metal. Let a roofer with fall protection handle close-up inspection.

Written and reviewed by the Roof Repair SNJ team · Updated November 2026

Service areas

Roof Repair Across New Jersey

We repair roofs in all 21 New Jersey counties. Pick your county for local roof types, storm history, permit notes and prices, or see every town on our New Jersey service areas page.

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Free inspection

Send Us Photos of Your Granule Loss for a Free NJ Roof Inspection

Not sure whether the sand in your gutters is normal shedding, aging, hail or a defect? Roof Repair SNJ inspects roofs in all 21 New Jersey counties and gives you photos of what we find plus a written, itemized quote. Request your free roof inspection and we will tell you plainly whether you need a repair, a claim or nothing at all.

No pressure and no obligation. If a repair will do, we’ll tell you.

Roof Repair SNJ

Sources: New Jersey State Hazard Mitigation Plan, Section 4.10 Severe Weather (NJOEM, 2024) · NWS Mount Holly: June 2, 2019 event review · NWS Mount Holly: July 17, 2021 event review · Insurance Journal: IBHS study shows smaller hail may be more damaging to roofs (Oct 2025) · IBHS: Is it hail damage? · GAF TAB-R-112: Granule Loss on New Shingles · GAF Technical Bulletin C-31: Repairing hail damage to granule-surfaced membranes · Malarkey Technical Bulletin 08-26: Granule sloughing · ARMA: Coating of asphalt shingles after installation · Owens Corning Technical Bulletin: Algae growth on asphalt shingles (2023) · Roof Observations: Asphalt shingle rejuvenation treatments · InspectApedia: Loss of mineral granules from asphalt shingle roofs · NJ DOBI: Insurance claims after a storm · N.J.A.C. 5:23-2.7 Ordinary maintenance and minor work · N.J.S.A. 56:8-151 Home improvement contract requirements · NJ Division of Consumer Affairs license verification · Roof Observations: New Jersey roof cost guide (Jan 2026) · Fixr: Roof replacement cost in New Jersey (2026). Prices are planning ranges, not quotes. Code, permit and insurance information is general guidance; your town’s construction office, your policy and a licensed design professional have the final word.