# The AhTown Guide to Roofing in New Jersey

By AhTown. Updated October 19, 2026.

A roof is the biggest repair most homeowners ever buy, and they usually buy it once. This guide answers the 17 questions New Jersey homeowners search most, with real prices, the state's permit and contractor rules, and what insurance does and doesn't pay for. Every figure names its source.

## At a glance

| Question | Short answer |
|---|---|
| New roof in NJ | $8,500 to $17,000; about $13,500 for a typical house |
| Asphalt shingle life | About 20 years (3-tab) or 30 years (architectural) |
| Minor repair or leak | $150 to $1,000 |
| Permit to re-roof | Not needed on a detached one- or two-family house |
| Second layer of shingles | Allowed over one layer. Two existing layers must be torn off |
| How long it takes | 1 to 3 days for asphalt shingles |
| Insurance | Covers storm damage, not wear and tear |
| Check a roofer | Registration begins "13VH." newjersey.mylicense.com/verification |

## How Much Does a New Roof Cost in NJ?

> **Quick answer:** A roof replacement in New Jersey typically costs $8,500 to $17,000, according to Fixr's 2026 NJ data, with a typical 1,700 square foot roof in architectural shingles at about $13,500. Nationally, asphalt roofs run $3 to $6 per square foot, or $300 to $600 per roofing "square" of 100 square feet. Tearing off the old roof adds about $1 per square foot.

### What does a roof cost in NJ?

| Measure | Cost (Fixr NJ, March 2026) |
|---|---|
| Typical range | $8,500 to $17,000 |
| 1,700 sq ft gable roof, architectural shingles | About $13,500 |
| Tear-off | About $1 per sq ft, plus disposal |

### National prices by home size

| Home size | Cost (HomeGuide, Nov 2025) |
|---|---|
| 1,000 sq ft | $3,500 to $6,700 |
| 2,000 sq ft | $6,700 to $13,400 |
| 3,000 sq ft | $10,100 to $20,100 |

Angi (March 2026) puts the national average at $9,609.

### What is a "square"?

Roofers price by the square: 100 square feet of roof. A 2,000 square foot roof is 20 squares. Your roof is larger than your floor plan because of the pitch and overhangs.

### What changes the price?

- **Material:** see [roofing materials compared](https://www.ahtown.com/guides/roofing#roofing-materials-cost-lifespan)
- **Pitch and complexity:** steep roofs, dormers, valleys and skylights
- **Tear-off:** how many layers come off
- **Decking:** rotted plywood found after tear-off is priced per sheet. Ask for that price up front
- **Flashing, vents and gutters**

**Sources:** Fixr, [Roof replacement cost in New Jersey](https://fixr.com/costs/roof-replacement-new-jersey); HomeGuide, [Roof replacement cost](https://homeguide.com/costs/roof-replacement-cost); Angi, [Roof replacement cost](https://www.angi.com/articles/how-much-does-roof-replacement-cost.htm).

## Roofing Materials Compared: Cost and How Long Each Lasts

> **Quick answer:** Architectural asphalt shingles are the standard choice: about $400 to $600 per square installed and a 30-year life. Basic 3-tab shingles cost less and last about 20 years. Standing seam metal costs $9 to $16 per square foot and lasts 40 to 80 years. Slate costs $10 to $30 per square foot and can last a century or more.

### Sloped roofs

| Material | Installed cost | Life expectancy (InterNACHI) |
|---|---|---|
| 3-tab asphalt shingles | $200 to $500 per square | 20 years |
| Architectural asphalt shingles | $400 to $600 per square | 30 years |
| Cedar shake | $5.50 to $13.50 per sq ft | 25 years |
| Standing seam metal | $9 to $16 per sq ft | 40 to 80 years |
| Slate | $10 to $30 per sq ft | 60 to 150 years |

A square is 100 square feet. $400 to $600 per square is $4 to $6 per square foot.

### Flat and low-slope roofs

| Material | Installed cost per sq ft (HomeGuide, Nov 2025) | Life expectancy |
|---|---|---|
| EPDM rubber | $4 to $10 | 15 to 25 years |
| TPO | $4 to $10 | 7 to 20 years |
| Modified bitumen | $4.00 to $7.50 | 20 years |
| Built-up roofing | $3.50 to $7.50 | 30 years |

### Which should you choose?

- **Staying under 15 years:** architectural asphalt is usually the best value
- **Staying for decades:** metal costs about twice as much and can last twice as long
- **Slate already on the house:** it can last a century or more, so get a repair quote before replacing it

**Sources:** HomeGuide, [Asphalt shingle roof cost](https://homeguide.com/costs/asphalt-shingle-roof-cost), [Metal roof cost](https://homeguide.com/costs/metal-roof-cost), [Flat roof replacement cost](https://homeguide.com/costs/flat-roof-replacement-cost); This Old House, [Slate roof cost](https://www.thisoldhouse.com/roofing/slate-roof-cost) and [Cedar shake roof cost](https://www.thisoldhouse.com/roofing/cedar-shake-roof-cost); InterNACHI, [Life expectancy chart](https://www.nachi.org/life-expectancy.htm).

## How Much Does Roof Repair Cost? What to Do About a Leak

> **Quick answer:** A minor roof repair or leak fix costs $150 to $1,000. Moderate repairs run $1,000 to $3,000, and major ones $3,000 to $6,000 or more. Replacing a few shingles costs $100 to $300, a vent pipe boot $75 to $150, and chimney flashing $200 to $1,000. An emergency tarp costs $1.00 to $2.80 per square foot.

### Common repairs

| Repair | Cost (HomeGuide, Feb 2026) |
|---|---|
| Minor repair or small leak | $150 to $1,000 |
| Replace up to 25 shingles | $100 to $300 |
| Vent pipe boot | $75 to $150 |
| Flashing repair | $200 to $500 |
| Chimney flashing | $200 to $1,000 |
| Replace a 100 sq ft section | $350 to $1,000 |
| Sagging section | $1,000 to $5,000+ |
| Emergency tarp | $1.00 to $2.80 per sq ft |

### Where do roofs usually leak?

Around things that poke through: chimneys, vent pipes and skylights. The roofing trade association NRCA tells homeowners to look for loose material or wear around chimneys, pipes and other penetrations.

### What should you do when the roof is leaking?

1. Catch the water and move what you can.
2. Take photos for your insurer.
3. Call a roofer for an emergency tarp if the weather won't let them repair it.
4. Call your insurance company if a storm caused it. See [insurance and roofs](https://www.ahtown.com/guides/roofing#does-insurance-cover-roof).

Stay off the roof. NRCA discourages homeowners from climbing up to inspect.

### Does a roof repair need a permit in NJ?

Not on a detached one- or two-family house. See [roof permits](https://www.ahtown.com/guides/roofing#roof-permit-nj).

**Sources:** HomeGuide, [Roof repair cost](https://homeguide.com/costs/roof-repair-cost); NRCA guidance, [via ISHN](https://ishn.com/articles/99082-a-guide-to-checking-your-roof).

## How Long Does a Roof Last, and What Are the Signs You Need a New One?

> **Quick answer:** An architectural asphalt shingle roof lasts about 30 years and a basic 3-tab roof about 20, according to the home inspectors' association InterNACHI. Signs it's near the end: shingles that are buckling, curling or blistering, and lots of granules in the gutters. The roofing trade association recommends a checkup every spring and fall.

### How long each roof lasts

| Roof type | Life expectancy |
|---|---|
| 3-tab asphalt shingles | 20 years |
| Architectural asphalt shingles | 30 years |
| Wood shake | 25 years |
| Metal | 40 to 80 years |
| Slate | 60 to 150 years |
| EPDM rubber (flat) | 15 to 25 years |

### Signs from the ground

The National Roofing Contractors Association says to look for:

- Shingles that are buckling, curling or blistering. That signals the end of their life
- Loose material or wear around chimneys, pipes and other openings
- Excessive shingle granules in the gutters

Check from the ground with binoculars, or from a window. Don't climb up.

### What does a roof inspection cost?

HomeAdvisor's most recent figure is an average of $236, with a range of $125 to $358. Fixr's New Jersey page lists $400 to $1,000. Many roofers inspect for free when quoting, which is useful but comes from someone selling a roof.

### How often should a roof be checked?

Twice a year, in spring and fall, and after any major storm.

**Sources:** InterNACHI, [Life expectancy chart](https://www.nachi.org/life-expectancy.htm); NRCA guidance, [via ISHN](https://ishn.com/articles/99082-a-guide-to-checking-your-roof); HomeAdvisor, [Roof inspection cost](https://cost-guide-ssr.homeadvisor.com/cost/inspectors-and-appraisers/hire-a-roof-inspector/); Fixr, [Roof replacement cost in New Jersey](https://fixr.com/costs/roof-replacement-new-jersey).

## Should You Repair or Replace Your Roof? Can You Add a Second Layer?

> **Quick answer:** Repair when the roof is well short of its expected life and the damage is in one spot. Replace when it's near the end of its expected life or leaking in several places. In New Jersey you can install new shingles over one existing layer, but if the roof already has two layers, or the old roofing is water-damaged, slate, tile or wood shake, it must be torn off first.

### Repair or replace?

| Situation | Lean toward |
|---|---|
| Roof well short of its expected life, a few damaged shingles | Repair |
| One leak at a chimney or vent pipe | Repair the flashing |
| Asphalt roof near 20 to 30 years old | Replace |
| Curling or blistering shingles across the roof | Replace |
| Leaks in several places | Replace |
| Selling soon, and the buyer's inspector will flag it | Get quotes for both |

These are rules of thumb. A roofer who inspects the roof should be able to show you photos of what they found.

### Can you put new shingles over old ones in NJ?

Sometimes. New Jersey's rehabilitation code requires removing the existing roof covering before installing a new one when:

- There are already two or more layers of roofing
- The existing roof is water-soaked or deteriorated
- The existing roof is slate, tile or wood shake

So one new layer over a single sound layer of asphalt shingles is allowed.

### Should you?

A second layer saves the tear-off cost, about $1 per square foot. But it hides the plywood, so rotted decking doesn't get found or fixed. A full tear-off lets the roofer inspect the deck. Ask how each option affects the shingle warranty.

**Sources:** N.J.A.C. 5:23-6, [NJ Rehabilitation Subcode](https://www.nj.gov/dca/codes/codreg/pdf_regs/njac_5_23_6.pdf); InterNACHI, [Life expectancy chart](https://www.nachi.org/life-expectancy.htm); Fixr, [Roof replacement cost in New Jersey](https://fixr.com/costs/roof-replacement-new-jersey).

## Do You Need a Permit to Replace a Roof in NJ?

> **Quick answer:** No, for most houses. Since March 2018, repairing or replacing the roof covering on a detached one- or two-family home in New Jersey is ordinary maintenance and needs no permit, even for a full replacement. Townhouses, attached homes and multifamily buildings aren't covered by that rule. Structural work, such as new framing or changing the roof's shape, still needs a permit.

### What does the NJ rule say?

New Jersey's construction code (N.J.A.C. 5:23-2.7) lists as ordinary maintenance:

- The repair or replacement of existing roof covering on detached one- and two-family dwellings
- The repair, replacement or installation of gutters and leaders

The state's 2018 notice says this includes total replacement of any amount of roof covering.

### When do you still need a permit?

| Situation | Permit? |
|---|---|
| New shingles on a detached single-family or two-family house | No |
| Gutters and downspouts | No |
| Townhouse, attached home or multifamily building | Ask your town |
| New framing, skylight openings, changing the roof pitch | Yes |
| Replacing large areas of roof decking | Ask your town. The state rule covers roof covering |

### What should you ask your roofer?

- Does my house qualify as a detached one- or two-family dwelling?
- If you find rotted decking, does that change the permit answer in my town?

NJ rules bar a contractor from starting work until any required permits have been issued. "No permit needed" should come with a reason.

**Sources:** N.J.A.C. [5:23-2.7](https://law.cornell.edu/regulations/new-jersey/N-J-A-C-5-23-2-7); NJ DCA, [2018 ordinary maintenance changes](https://www.nj.gov/dca/codes/alerts/pdfs/OM_MW_03052018.pdf); N.J.A.C. [13:45A-16.2](https://law.cornell.edu/regulations/new-jersey/N-J-A-C-13-45A-16-2).

## Do Roofers Need a License in NJ? How to Check One

> **Quick answer:** Roofers in New Jersey must be registered with the Division of Consumer Affairs as home improvement contractors. The registration number always begins with "13VH" and must appear on contracts, ads and trucks. Registered contractors must carry at least $500,000 in liability insurance. A 2024 law is adding a licensing exam, but it hadn't taken effect in the sources we checked. Look up a roofer at newjersey.mylicense.com/verification.

### What does NJ require of a roofer?

- **Registration** with NJ Consumer Affairs. The number begins "13VH"
- **Insurance:** at least $500,000 per occurrence in commercial general liability, plus workers' compensation unless exempt
- **A compliance bond** of $10,000 to $50,000, depending on the size of their contracts, under the 2024 law
- **The registration number** on all ads, contracts, business documents and commercial vehicles

### What must the contract include?

For any job over $500, a written contract with:

- The contractor's legal name, business address and registration number
- A copy of their liability insurance certificate and the insurer's phone number
- A description of the work and the main materials
- The total price, including any finance charges
- Start and completion dates
- Any warranties, in writing

You can cancel until midnight of the third business day after you receive a copy.

### Is NJ licensing roofers now?

It's being phased in. A law signed in January 2024 created a state board and will require new contractors to pass an exam and show training or experience. Sources from mid-2026 say the licensing part was not yet operating, and New Jersey was still a registration state. Ask NJ Consumer Affairs for the current status: 800-242-5846.

### How do you check a roofer?

Search at [newjersey.mylicense.com/verification](https://newjersey.mylicense.com/verification/), or call 800-242-5846. Confirm the registration is active and the name matches your contract.

**Sources:** NJ Attorney General, [Contractor guidance](https://www.nj.gov/oag/newsreleases12/pr20121023a.html); N.J.S.A. [56:8-142](https://law.justia.com/codes/new-jersey/title-56/section-56-8-142/), [56:8-144](https://law.justia.com/codes/new-jersey/title-56/section-56-8-144/), [56:8-151](https://law.justia.com/codes/new-jersey/title-56/section-56-8-151/); N.J.A.C. [13:45A-16.2](https://law.cornell.edu/regulations/new-jersey/N-J-A-C-13-45A-16-2); NJ Consumer Affairs, [Changes to the law](https://njconsumeraffairs.gov/Documents/HIC-HEC-Regarding-Changes-To-The-Law-New-Requirements-For-Registration.pdf); Cole Schotz, [NJ contractor licensing changes](https://www.coleschotz.com/new-jersey-tightening-the-screws-on-its-home-improvement-contractor-licensing-requirements/).

## Does Homeowners Insurance Cover a New Roof?

> **Quick answer:** It covers sudden damage, such as wind, hail, fire or the weight of snow and ice. It doesn't cover a roof that's simply worn out. What you're paid depends on your policy: replacement cost pays for a new roof minus your deductible, while actual cash value subtracts depreciation for the roof's age. Report damage promptly, because policies often set short deadlines.

### Covered or not?

| Cause | Typically covered? |
|---|---|
| Wind or hail damage | Yes |
| A tree falling on the roof | Yes |
| Fire | Yes |
| Weight of snow and ice | Yes |
| Old age, wear and tear | No |
| A leak from lack of maintenance | No |

Policies differ. Read yours.

### Replacement cost vs. actual cash value

| Policy type | What it pays |
|---|---|
| Replacement cost (RCV) | The cost of a new roof, minus your deductible. Often paid in two parts, the second after the work is done |
| Actual cash value (ACV) | The depreciated value of your old roof, minus your deductible |

A 20-year-old roof on an ACV policy may pay out very little. Wind and hail deductibles can be a flat amount or a percentage of your home's insured value.

### Should you hire a public adjuster?

You can. In New Jersey, public adjusters are licensed by the Department of Banking and Insurance. The department says fees are generally 10 to 15% of the claim, and the contract must list the services and the maximum fee. They may not solicit you between 6 p.m. and 8 a.m. in the 24 hours after a loss.

### What should you watch for?

- Report the damage right away. Many policies give only one year to sue over a denied claim
- Don't sign anything that hands a contractor the rights to your insurance claim
- Be wary of a roofer who offers to "cover" your deductible. Your insurer's payment assumes you pay it

**Sources:** Maryland Insurance Administration, [Roof replacement advisory](https://www.insurance.Maryland.gov/Consumer/Documents/publicnew/Roof-Replacement-Insurance-Advisory-2019.pdf); Progressive, [Roof depreciation](https://www.progressive.com/answers/roof-depreciation-affect-homeowners-insurance/); NJ Department of Banking and Insurance, [Public adjusters](https://nj.gov/dobi/pressreleases/pr121221.html); BBB, [Storm chasers](https://www.bbb.org/all/natural-disasters/protect-yourself-from-storm-chasers); Capehart Scatchard, [Policy suit deadlines](https://www.capehart.com/limitation-provision-in-homeowners-insurance-policy-upheld-by-court/).

## Roofing Scams and Storm Chasers in NJ: How to Spot Them

> **Quick answer:** After a big storm, unregistered crews go door to door offering fast, cheap roof work. The warning signs: they knock uninvited, say they're "in the area," push you to sign today, want a large deposit or cash, or ask you to sign over your insurance claim. In New Jersey, check that the registration number begins with "13VH," and get at least three written estimates.

### Warning signs

From the FTC and the Better Business Bureau:

- They knock on your door because they're "working in the area"
- They say they have materials left over from another job
- They pressure you to decide immediately
- They want full payment or a very large deposit before starting
- They accept only cash
- They ask you to pull the permit
- They want you to sign documents giving them rights to your insurance claim

### What has NJ warned about?

After Hurricane Sandy, NJ Consumer Affairs warned that fly-by-night, unregistered contractors would descend on storm-damaged areas. After 2018 flooding, the Attorney General told homeowners to be wary of large upfront payments or demands for cash, and to get at least three written estimates.

### How do you protect yourself?

1. Look up the registration at [newjersey.mylicense.com/verification](https://newjersey.mylicense.com/verification/).
2. Get a written contract. NJ requires one for jobs over $500.
3. Use your three business days to cancel if you signed under pressure.
4. Pay in stages. NJ Consumer Affairs suggests no more than one-third up front.
5. Pay by check or card, never cash.

### Is a "free roof" real?

No. A roof paid for by insurance still involves your deductible. An offer to waive it should make you cautious.

**Sources:** FTC, [Avoiding home improvement scams](https://consumer.ftc.gov/articles/how-avoid-home-improvement-scam); BBB, [Storm chasers](https://www.bbb.org/all/natural-disasters/protect-yourself-from-storm-chasers); NJ Consumer Affairs, [2012 post-Sandy warning](https://njconsumeraffairs.gov/News/Pages/11152012.aspx) and [2018 flood fraud warning](https://njconsumeraffairs.gov/News/Pages/08172018.aspx); N.J.S.A. [56:8-151](https://law.justia.com/codes/new-jersey/title-56/section-56-8-151/).

## How Long Does a Roof Replacement Take, and When Is the Best Time?

> **Quick answer:** An asphalt shingle roof takes 1 to 3 days. Wood takes 2 to 8 days, slate about a week, and metal 1 to 2 weeks. Fall is widely considered the best season. Shingles can be installed in cold weather, but below 40°F they turn brittle and their adhesive strips won't seal on their own, so roofers have to hand-seal them.

### How long by material

| Material | Typical time (Angi, July 2026) |
|---|---|
| Asphalt shingles | 1 to 3 days |
| Wood shake | 2 to 8 days |
| Slate | 6 to 7 days |
| Metal | 7 to 14 days |

Rain, rotted decking and a steep or complicated roof add time.

### When is the best time of year in NJ?

Fall, with mild temperatures and dry stretches. Late spring and summer work too. Book ahead.

### Can a roof be replaced in winter?

Yes, with care. GAF and Owens Corning both treat 40°F as the cold-weather line:

- Below 40°F, shingles lose flexibility and can crack
- The adhesive strip needs warmth and sun to activate
- In cold weather, roofers hand-seal each shingle with dabs of roofing cement

Ask a winter installer whether they hand-seal, and whether the manufacturer's warranty still applies.

### What should you expect on the day?

- Noise from early morning
- A dumpster in the driveway
- Tarps over landscaping
- A magnet sweep for nails at the end. Ask for it in the contract

**Sources:** Angi, [How long to replace a roof](https://www.angi.com/articles/how-long-replace-roof.htm); GAF, [Cool weather roofing](https://www.gaf.com/en-us/blog/residential-roofing/cool-weather-roofing-must-know-tips-for-installing-shingles-in-cool-temperatures-281474980457570); Owens Corning, [Cold weather technical bulletin](https://www.owenscorning.com/dms/10022497).

## What Causes Ice Dams, and How Do You Prevent Them?

> **Quick answer:** Ice dams form when heat leaking into the attic melts snow on the roof, and the water refreezes at the cold eaves. The fix starts inside: seal air leaks in the ceiling, then add attic insulation. In New Jersey, code requires an ice barrier under the shingles only in Sussex County, but many roofers install it statewide. Professional removal averages about $1,200.

### Why do ice dams form?

The University of Minnesota Extension puts it simply: uneven roof surface temperatures cause ice dams. Warm air from the house heats the upper roof, snow melts, and the water freezes when it reaches the unheated overhang. Water backs up behind the ice and gets under the shingles.

### How do you prevent them?

1. **Seal the ceiling.** Stop warm, moist air from leaking into the attic around lights, hatches and pipes.
2. **Add attic insulation** after the leaks are sealed.
3. **Rake snow** off the lower roof from the ground after heavy storms.

### Does NJ code require ice and water shield?

Only in the coldest part of the state. New Jersey requires an ice barrier where the average daily January temperature is 25°F or less, and a state bulletin says that applies only to Sussex County. Elsewhere it's good practice, not code. Ask whether your quote includes it at the eaves and valleys.

### What does removal cost?

| Service | Cost (HomeAdvisor, June 2026) |
|---|---|
| Ice dam removal, average | $1,200 |
| Typical range | $650 to $2,000 |
| Steam removal | $800 to $2,100 |

Don't chip at ice with a hammer or shovel. It damages shingles.

**Sources:** University of Minnesota Extension, [Dealing with and preventing ice dams](https://extension.umn.edu/protecting-home-rain-and-ice/dealing-and-preventing-ice-dams); NJ DCA, [Bulletin 07-3](https://www.nj.gov/dca/codes/publications/pdf_bulletins/b_07_3.pdf); N.J.A.C. [5:23-3.21](https://regulations.justia.com/states/new-jersey/title-5/chapter-23/subchapter-3/section-5-23-3-21); HomeAdvisor, [Ice dam removal cost](https://www.homeadvisor.com/cost/roofing/ice-dam-removal-cost).

## Roof Warranties Explained: Manufacturer vs. Workmanship

> **Quick answer:** A new roof comes with two warranties. The manufacturer's warranty covers defective shingles. The workmanship warranty, from your roofer, covers installation mistakes, which cause most leaks. A basic "lifetime" shingle warranty often gives full coverage for only the first 10 years and no workmanship coverage. Enhanced warranties add both but require a roofer the manufacturer has credentialed.

### The two warranties

| Warranty | Who gives it | What it covers |
|---|---|---|
| Manufacturer | The shingle maker | Defects in the materials |
| Workmanship | Your roofer | Mistakes in installation |

### What does "lifetime" mean?

Less than it sounds. Using GAF's 2026 warranty chart as an example:

| GAF warranty level | Material coverage | Workmanship coverage |
|---|---|---|
| Basic, any installer | "Lifetime," with full coverage for the first 10 years | None |
| Enhanced (System Plus) | 50 years of full coverage | 10 to 15 years, backed by GAF |

The enhanced levels require a contractor with GAF's own credential.

### What voids a roof warranty?

The trade association NRCA says to read the warranty for what voids it. Common issues to ask about: installing over old shingles, poor attic ventilation, and work by another contractor later.

### What does NJ require?

New Jersey's home improvement rules require contractors to give you copies of all warranties in writing. Get both the manufacturer's document and the roofer's own workmanship terms before you sign.

### What should you ask?

- How many years is your workmanship warranty, and what does it cover?
- Which manufacturer warranty level is in this quote?
- Will you register the warranty, and will I get the certificate?
- Does it transfer if I sell the house?

**Sources:** GAF, [Warranty comparison chart](https://www.gaf.com/en-us/document-library/documents/warranties/silver-pledge-warranty-comparison-chart-reswt218.pdf); NRCA, [Selecting a contractor](https://nrca.net/technical/selecting-a-contractor); N.J.A.C. [13:45A-16.2](https://law.cornell.edu/regulations/new-jersey/N-J-A-C-13-45A-16-2).

## How Much Do Gutters Cost to Replace or Clean?

> **Quick answer:** New gutters cost $12 to $25 per linear foot installed, or $2,200 to $5,000 for a typical house. Aluminum is the most common at $10 to $20 a foot. Gutter cleaning averages $360, and This Old House recommends cleaning at least twice a year. In New Jersey, gutter work needs no permit.

### Installation cost by material

| Material | Per linear foot (HomeGuide, Oct 2025) |
|---|---|
| Vinyl | $8 to $12 |
| Aluminum | $10 to $20 |
| Steel | $10 to $35 |
| Copper | $25 to $40+ |

Seamless gutters add $3 to $5 a foot. Downspouts run $30 to $75 each.

### Gutter cleaning

| | Cost (This Old House, June 2026) |
|---|---|
| Average | $360 |
| Typical range | $191 to $529 |
| Per linear foot | $0.95 to $2.25 |

Clean at least twice a year, in late spring and after the leaves fall. More often under heavy tree cover.

### Should you replace gutters with the roof?

If they're old, yes. The roofer is already working at the edge of the roof, and new drip edge and flashing tie into the gutters.

### Does it need a permit?

No. New Jersey lists the repair, replacement or installation of gutters and leaders as ordinary maintenance.

**Sources:** HomeGuide, [Gutter installation cost](https://homeguide.com/costs/gutter-installation-cost); This Old House, [Gutter cleaning cost](https://www.thisoldhouse.com/gutters/reviews/gutter-cleaning-cost); N.J.A.C. [5:23-2.7](https://law.cornell.edu/regulations/new-jersey/N-J-A-C-5-23-2-7).

## Should You Replace Your Roof Before Installing Solar Panels?

> **Quick answer:** If your asphalt roof is more than about 10 years old, consider replacing it first. Solar panels are built to last decades, and removing and reinstalling them later to replace the roof costs $200 to $300 per panel, or roughly $2,800 to $4,800 for a typical system. The U.S. Department of Energy says doing both at once saves an average of $4,000.

### Why the roof's age matters

Panels sit on the roof for decades. An architectural shingle roof lasts about 30 years, so a 15-year-old roof will need replacing while the panels still have half their life left.

### What does it cost to remove and reinstall panels?

| Source | Cost |
|---|---|
| EnergySage (May 2026) | $200 to $300 per panel; can exceed $7,000 |
| Fixr (Jan 2025) | $2,800 to $4,800 for 14 to 16 panels, average $3,800 |

It takes 1 to 2 days to take the panels off and 2 to 3 days to put them back.

### What should you do?

| Roof age | Suggestion |
|---|---|
| Under 10 years | Install solar |
| 10 to 15 years | Get a roofer's inspection first |
| Over 15 years | Price a new roof with the solar project |

### What should you ask?

- **The solar company:** who pays to remove and reinstall the panels if the roof needs work? Does that void anything?
- **The roofer:** does mounting solar affect the shingle warranty?

**Sources:** EnergySage, [Solar panels and roof replacement](https://energysage.com/solar/solar-panel-roof-replacement); Fixr, [Cost to remove solar panels](https://www.fixr.com/costs/remove-solar-panels-to-replace-roof); U.S. Department of Energy, [Replacing your roof? Add solar](https://www.energy.gov/articles/replacing-your-roof-its-great-time-add-solar); InterNACHI, [Life expectancy chart](https://www.nachi.org/life-expectancy.htm).

## Should You Replace Your Roof Before Selling Your House?

> **Quick answer:** Usually not, unless it leaks or is clearly at the end of its life. In the 2025 Cost vs Value report for the Middle Atlantic region, an asphalt roof replacement cost about $37,201 and was estimated to return 58.3% of that at sale. Fix leaks and flashing, clear the gutters and get a roofer's written assessment. Then repair, offer a credit or price for the roof, and disclose what you know.

### Your options

| Roof condition | Usual move |
|---|---|
| Sound, under about 15 years | Clean gutters, replace any missing shingles, keep the receipts |
| A leak or bad flashing | Repair it before listing, and disclose the repair |
| Near the end of its life, not leaking | Get a written assessment and a replacement quote. Price for it or offer a credit |
| Leaking in several places | Replace, or price the house as needing a roof |

### Why not just replace it?

A new roof costs most New Jersey homeowners $8,500 to $17,000, according to Fixr's 2026 data, and the Cost vs Value estimate says you get back roughly half. A buyer's inspector will flag an old roof either way. A replacement quote in hand lets you negotiate with real numbers instead of the buyer's guess.

### How old is too old?

InterNACHI puts an architectural asphalt shingle roof at about 30 years and a basic 3-tab roof at about 20. Curling, buckling or blistering shingles and lots of granules in the gutters are signs it's near the end. See [signs you need a new roof](https://www.ahtown.com/guides/roofing#signs-you-need-a-new-roof).

### What should you do before listing?

- Clear the gutters and downspouts. Cleaning averages about $360
- Replace missing or damaged shingles
- Fix flashing at chimneys and vents
- Gather the roof's age, permit, warranty and any repair invoices
- Disclose past leaks on New Jersey's seller disclosure form

### Does a new roof transfer its warranty?

Ask. Some manufacturer warranties transfer once to a new owner. See [roof warranties](https://www.ahtown.com/guides/roofing#roof-warranty).

### More on getting ready to sell

See [The AhTown Guide to Getting Your New Jersey Home Ready to Sell](https://www.ahtown.com/guides/selling-a-home-nj).

**Sources:** Remodeling/JLC, [Cost vs Value 2025, Middle Atlantic](https://www.jlconline.com/cost-vs-value/2025/middle-atlantic/); Fixr, [Roof replacement cost in New Jersey](https://fixr.com/costs/roof-replacement-new-jersey); InterNACHI, [Life expectancy chart](https://www.nachi.org/life-expectancy.htm); This Old House, [Gutter cleaning cost](https://www.thisoldhouse.com/gutters/reviews/gutter-cleaning-cost); NJ REALTORS, [Real Estate Consumer Protection Enhancement Act](https://www.njrealtor.com/government-affairs/cpea/).

## How Do You Find a Reasonably Priced Roofer Who Guarantees the Work in NJ?

> **Quick answer:** Get three written quotes for the same scope of work, so the prices can be compared. A typical New Jersey roof replacement runs $8,500 to $17,000, according to Fixr's 2026 data. "Guaranteed" should mean two written warranties: the roofer's workmanship warranty and the shingle maker's, with years and coverage spelled out. Check the roofer's "13VH" registration, and pay no more than a third up front.

### Is the price reasonable?

Only if the quotes cover the same job. A cheap quote often leaves things out. Ask every roofer to answer these in writing:

| Ask | Why it changes the price |
|---|---|
| Tear-off, or new shingles over the old layer? | Tear-off adds about $1 per sq ft but lets the roofer see the wood deck |
| Price per sheet if rotted decking is found | The most common surprise on the final bill |
| Underlayment, drip edge and flashing: new or reused? | Reused flashing is a leak waiting to happen |
| Attic ventilation included? | Poor ventilation can void a shingle warranty |
| Shingle brand and product line | "Architectural shingles" isn't specific enough |
| Permit, dumpster and cleanup included? | Easy to leave off a low quote |

See [what a new roof costs](https://www.ahtown.com/guides/roofing#new-roof-cost-nj) and [repair costs](https://www.ahtown.com/guides/roofing#roof-repair-cost).

### What does "guaranteed work" actually mean?

| Warranty | Who stands behind it | What it covers |
|---|---|---|
| Workmanship | The roofer | Installation mistakes, which cause most leaks |
| Manufacturer | The shingle maker | Defective shingles |

A "lifetime" shingle warranty can mean full coverage for only the first 10 years and no workmanship coverage at all. Ask how many years the roofer's own warranty runs, what it covers, and whether you get it in writing. New Jersey requires contractors to give you copies of all warranties. See [roof warranties](https://www.ahtown.com/guides/roofing#roof-warranty).

### What should you ask a neighbor who recommends a roofer?

A recommendation tells you the crew showed up. Ask the questions that tell you about the guarantee:

- Did you get a written workmanship warranty? For how many years?
- Did anything leak afterward, and did they come back?
- Did the final bill match the quote?

### What should you check before you sign?

- The registration number starts with "13VH." Look it up at newjersey.mylicense.com/verification. See [checking a roofer](https://www.ahtown.com/guides/roofing#nj-roofer-registration-lookup)
- A certificate of liability insurance
- A written contract for any job over $500, with start and finish dates. You have three business days to cancel
- A payment schedule. NJ Consumer Affairs suggests a third up front, a third midway and a third at completion

### Red flags

A knock on the door after a storm, "we're in the area," pressure to sign today, or a large cash deposit. See [storm chasers](https://www.ahtown.com/guides/roofing#roofing-scams-storm-chasers-nj).

**Sources:** Fixr, [Roof replacement cost in New Jersey](https://fixr.com/costs/roof-replacement-new-jersey); GAF, [Warranty comparison chart](https://www.gaf.com/en-us/document-library/documents/warranties/silver-pledge-warranty-comparison-chart-reswt218.pdf); NRCA, [Selecting a contractor](https://nrca.net/technical/selecting-a-contractor); NJ Consumer Affairs, [Contractor payment guidance](https://njconsumeraffairs.gov/News/Pages/11152012.aspx); N.J.A.C. [13:45A-16.2](https://law.cornell.edu/regulations/new-jersey/N-J-A-C-13-45A-16-2); N.J.S.A. [56:8-151](https://law.justia.com/codes/new-jersey/title-56/section-56-8-151/).

## How to Hire a Roofer in New Jersey: Questions to Ask

> **Quick answer:** Check the "13VH" registration number, ask for certificates of liability and workers' compensation insurance, and insist on a written proposal that describes the work, materials, start and completion dates, and payment terms. That's the roofing trade association's advice. NJ Consumer Affairs suggests paying no more than one-third up front, one-third midway and one-third at completion.

### Ten questions to ask

1. What's your NJ registration number? (It begins "13VH.")
2. Can you send certificates for liability insurance and workers' comp?
3. Do you have a permanent place of business? How long have you been there?
4. Is this a full tear-off? How many layers are there now?
5. What do you charge per sheet if you find rotted decking?
6. What underlayment and flashing are you installing? Is ice and water shield included?
7. Who supervises the crew on site?
8. Which manufacturer warranty comes with this, and what's your workmanship warranty?
9. Will you protect the landscaping and do a magnet sweep for nails?
10. What's the payment schedule?

### What should the written proposal include?

From NRCA: complete descriptions of the work and specifications, start and completion dates, and payment procedures. New Jersey law adds the registration number, a copy of the insurance certificate, and your three-day right to cancel.

### Is the lowest bid the best?

Not automatically. NRCA says price is only one factor. Compare what each bid includes: tear-off, underlayment, flashing, ventilation, cleanup and warranty.

### Red flags

- They knocked on your door after a storm
- No "13VH" number
- A large deposit or cash only
- They want you to sign over your insurance claim

See [roofing scams](https://www.ahtown.com/guides/roofing#roofing-scams-storm-chasers-nj).

### Where do you find one?

AhTown features one company per trade per ZIP code in New Jersey. Roofing listings are opening soon. Featured Pros pay for placement. AhTown does not endorse, verify or guarantee any provider, so run the registration check above for any roofer you call. [See who's featured in your ZIP](https://www.ahtown.com).

**Sources:** NRCA, [Selecting a contractor](https://nrca.net/technical/selecting-a-contractor); FORTIFIED (IBHS), [How to select a roofing contractor](https://fortifiedhome.org/article/how-to-select-a-roofing-contractor/); NJ Consumer Affairs, [Contractor payment guidance](https://njconsumeraffairs.gov/News/Pages/11152012.aspx); N.J.S.A. [56:8-151](https://law.justia.com/codes/new-jersey/title-56/section-56-8-151/); FTC, [Avoiding home improvement scams](https://consumer.ftc.gov/articles/how-avoid-home-improvement-scam).

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AhTown features one company per trade per ZIP code in New Jersey. Roofing listings are opening soon. Featured Pros pay for placement. AhTown does not endorse, verify or guarantee any provider. See who's featured in your ZIP: https://www.ahtown.com

Canonical page: https://www.ahtown.com/guides/roofing