Roofers Who Know Somerville's Older Homes, Its Weather, and Its Codes
Hiring a roofing contractor in Somerville means hiring one who has worked on what the borough is built from. The older homes near the center of town fail differently than the postwar capes on the outskirts: steep slate pitches, shallow eaves that ice up in January, and additions tied into original rooflines.
William Penn Roofing & Exteriors has roofed Pennsylvania and New Jersey properties since 2008, licensed under NJ Registration 13VH12052900 and installing as a GAF Authorized contractor and CertainTeed Master Shingle Applicator.
Testimonials & Reviews
Why Somerville Homeowners Trust William Penn Roofing & Exteriors
Posted on Google![]()
G AldridgeTrustindex verifies that the original source of the review is Google.
Amazing beyond our expectations. Project Specialist, Kim was very professional, great follow through and knowledgeable. He took his time to thoroughly explain the new roof installation process and proposal. The on-site project manager, Will kept us updated throughout the project and his crew were punctual and finished on time. Great clean up after job completion. Also, the office manager, Ashley was responsive and very accommodating. Highly recommend.Posted on Google![]()
Megan LynchTrustindex verifies that the original source of the review is Google.
Dave with WPR replaced the roof on our sunroom as well as siding and trim on the front of our house. His crew arrived on time, were professional & cleaned up after they finished. My husband & I are extremely happy with the finished product. We would recommend WPR to anyone needing roofing, trim, siding or gutters. You can trust this company.Posted on Google![]()
Ian SmithTrustindex verifies that the original source of the review is Google.
I had the pleasure of working with the owner David of William Penn Roofing. He was very helpful with making all of the tough choices with having so many options. The work was completed on time, even in the bad weather. They were very thorough in their cleanup as well. I would highly recommend them for any of your roofing or siding needs! Even there show van as all of the options inside so you can see them in person.Posted on Google![]()
MikeTrustindex verifies that the original source of the review is Google.
I had roof damage from high winds and reached out for help. Dave responded quickly, arrived promptly, and thoroughly inspected the roof. He identified that the damage was isolated to one area and was able to repair it on the spot. His professionalism, efficiency, and attention to detail were outstanding. I truly appreciated his quick response and quality workmanship. Highly recommend his services to anyone in need of a reliable and skilled roofer!Posted on Google![]()
Rich GleesonTrustindex verifies that the original source of the review is Google.
Did my roof and banged it out in a single day. Super professional and great communication on the process and timing. Would recommend and use again.Posted on Google![]()
Jethro PepeTrustindex verifies that the original source of the review is Google.
We recently had William Penn Roofing replace our roof and they did an incredible job from top to bottom. The representative, Kim, did a great job of getting our quote and presenting options to us. The roofing team did a superb 1-day job and cleaned up our yard well. The project manager on the job was there the whole time to answer our questions also! I highly recommend.Posted on Google![]()
Sven HedbergTrustindex verifies that the original source of the review is Google.
Our roof replacement on 274 East Court Street, Doylestown, was expertly done by William Penn Roofing with a minimum of disturbance to neighbors and traffic. David La Salle’s initial inspection of the failing roof was thorough and quickly followed by a quote. Scheduling and execution were efficient and communication between crew, tenants, neighbors and owners courteous and effective, avoiding all misunderstandings. Supervisors and crew were very professional and friendly and they thoroughly cleaned the job site, side walk and street after completing the job. It is a pleasure to recommend William Penn Roofing, based on quality of work, cost and work crew performance.Posted on Google![]()
Joe ETrustindex verifies that the original source of the review is Google.
William Penn Roofing did great work on our new roof. Thorough and accurate estimate and scheduled quickly. Roof looks great and they were in and out (and cleaned up) in a day. Whole team was a pleasure to work with. Highly recommend.Posted on Google![]()
Elyse GerwickTrustindex verifies that the original source of the review is Google.
Really great experience the whole way through with this company. They are excellent with communication, returning calls/emails. Ashley got everything all setup. On the first visit, Kim was very thorough, explaining the whole process, and he had everything with him to be able to show us what we'd be buying (gutter size options, roof colors, and the vents). There was even a folder he left with me with literature and samples I could share with my husband. When the roofers came out they were polite, tidyand did an excellent job with cleanup. It's been 10 days and we have not found a single piece of roofing remnants. The gutters were installed the following day, we opted for 6 inch gutters and downspouts with the gutter guards and couldn't be happier. Again, very professional team and impeccable cleanup. I'd absolutely recommend going with this company for your project and hope to work with them again when we need future work on the house.Posted on Google![]()
Patricia KohlheppTrustindex verifies that the original source of the review is Google.
William Penn Roofing came to give me a complete inspection of my roof. He explained in detail everything about the roofing from the attic area to the outside. Extremely helpful!
See Our Work: Roofing Projects in the Somerville Area
Photos tell you more about a roofer than any claim on a website. Our project gallery shows before and after work across New Jersey, including slate restorations, full tear offs, and flat roof replacements.
Roof Repair, Replacement, and Storm Work for Somerville Homes
Our residential roofing crews handle everything from a single failed valley to a complete tear off on a century old home.
Roof Inspection & Leak Diagnosis
We check the full system, not just the surface: shingles, flashing, valleys, decking, and attic ventilation. You get a written report with photos, so you can plan repairs instead of reacting to them.

Roof Replacement & New Roof Installation
Patched past the point of return means down to the deck, rotted sheathing replaced, and ice and water shield at the eaves and valleys. Our repair versus replacement guide covers the call.

Storm Damage Repair & Emergency Tarping
Wind, hail, and tropical remnants moving up the Raritan Valley cause most of the sudden damage here. Active leaks get tarped 24/7, and our storm damage team documents everything for your adjuster.
Understand What a Roof Costs Before Work Begins
Price comes down to size, pitch, material, and what we find under the old shingles. Older Somerville homes often carry two or three existing layers, which adds tear off and disposal that a quote based on square footage alone will miss.
Roofing Cost Calculator
Costs move with roof size, pitch, material choice, and deck condition. Our roofing cost calculator gives you a working number before you schedule an inspection.
Financing
Larger projects do not have to wait for savings to catch up. Homeowners can review financing options and choose a monthly structure that fits the budget while the roof gets done now.
Commercial Roofing Services
We handle flat and low slope work for downtown storefronts, office buildings, and multi tenant properties across Somerville. See our commercial roofing in New Jersey for full scope.
Commercial Roof Repair
Ponding, seam separation, and clogged drains cause most of what we get called for, and all three cost less caught early. Property managers across Somerset County, including near Martinsville, keep us on a maintenance rotation.

Commercial Roof Replacement
We install and replace TPO, PVC, modified bitumen, and EPDM systems, spec'd to the building's drainage, foot traffic, and rooftop equipment. Work is phased around your hours so the business stays open.

Commercial Roof Coating & Restoration
Coatings and targeted restoration often add years to a flat roof for a fraction of replacement cost. We inspect first and tell you honestly when a building has passed that point.
How a Somerville Roofing Project Works, Step by Step
1. Free inspection.
We walk the roof, photograph problem areas, check decking and attic ventilation, and measure. Roughly 45 to 60 minutes on an average home.
2. Written estimate.
You get line item pricing for materials, tear off, disposal, and labor, with no verbal change orders later.
3. Permits and scheduling.
We file with the Borough construction office and confirm your date once the permit clears, usually within several business days. Repairs then run 1 to 3 days, full replacements 1 to 2 weeks depending on size and weather.
4. Site protection and staging.
Dumpster placement is planned in advance, which matters on narrow lots and alley access properties downtown. Landscaping, siding, and walkways get covered.
5. Tear off and deck inspection.
Every layer comes off so we can see the sheathing, and no roof is left open overnight. Overlays hide problems, and the pros and cons of roofing over existing shingles explain why we rarely recommend one.
6. Install and final walkthrough.
Ice and water shield, underlayment, flashing, ventilation, then shingles. We magnet sweep the property and walk the finished roof with you before final payment.
Roofing Materials We Install in Somerville
Asphalt Shingles

Asphalt shingles are a cost-effective choice offering reliable weather protection and wide design flexibility. They’re ideal for homeowners seeking affordable, durable roofs that can withstand New Jersey’s seasonal winds and snow.
Metal Roofing

Standing seam resists wind, sheds snow, and reflects heat, though it costs more upfront. Best for long hold properties, and our metal roofing and shingles comparison covers the rest.
Slate Roofing

Common on the older homes near downtown, and most of those roofs do not need replacing. They need flashing and cracked tiles handled by someone who will not break twenty more walking the field.
Cedar Shake

Natural insulation and a look that works where asphalt falls flat on older architecture. It needs upkeep in a humid climate, so we cover the maintenance schedule and realistic lifespan first.
Copper Roofing

Usually reserved for bay windows, porch roofs, and valley flashing rather than a full roof. Those valleys outlast anything else you can put in them.
Flat Roofing (TPO, PVC, Modified Bitumen, EPDM)

These membranes serve commercial buildings and low slope sections like rear additions and porch roofs. Selection comes down to slope, drainage, foot traffic, and UV exposure.
Siding, Gutters, and Windows, Handled by the Same Crew

Gutter Cleaning and Maintenance
Undersized or clogged gutters are a leading cause of ice damming and fascia rot on older homes. We clean, repair, and install seamless systems through our gutter installation team.

Siding Contractor
Vinyl and fiber cement replacement pairs naturally with a roof project, since staging and access are already in place. See our siding installation work.

Skylight Installation
Curb mounted and deck mounted units, flashed properly and installed during a roof replacement whenever possible. That is when it costs least and leaks least. More on skylight installation.

Stucco Remediation
Stucco remediation that addresses cracking and trapped moisture before it damages the structure behind it.
Window & Door Installation
Missing kickout flashing lets water run behind stucco, where it rots sheathing out of sight for years. Our stucco remediation crews open the wall, dry it, and rebuild it correctly.
Why Somerville Homeowners Trust William Penn Roofing & Exteriors

Somerset County crews who know the Borough's permit process and which older blocks near downtown and Bridgewater need alley access for a dumpster

Roofing Pennsylvania and New Jersey properties since 2008, more about our team

GAF Authorized, CertainTeed Master Shingle Applicator, Owens Corning Preferred, BBB Accredited

Written line item estimates covering materials, labor, tear off, and disposal

Insurance claims documented on the roof with your adjuster, not argued over email

Workmanship and manufacturer warranties both registered after completion

Permits pulled and code compliance handled in house

Verified Google reviews, read what clients say
Somerville Roofing Questions We Get Most
Do historic district rules affect a roof replacement in Somerville?
If your home sits in a designated historic area, material and color choices may need review before work starts. We check with the Borough during the permit stage so it does not stall your project.
On an older Somerville home, is slate worth repairing or should I switch to asphalt?
If the field slate is sound and only flashing and scattered tiles have failed, repair is almost always cheaper and preserves the home’s value. Full slate failure is a different conversation, and we will tell you which one you are having.
When is the best time of year to replace a roof in Somerset County?
Late spring through early fall gives the widest weather window and the best shingle sealing conditions. Winter replacements are possible with the right products and sequencing, and often come with shorter lead times.
Why do homes near downtown Somerville get ice dams so often?
We handle all permits and ensure full compliance with Somerville building codes.
Can you work on tight downtown lots with limited driveway access?
Older homes here tend to have shallow eaves, limited attic insulation, and poor ventilation, which is the exact recipe for melt and refreeze. Our breakdown of how ice dams destroy roofs covers the fix.
What signs indicate my roof needs replacement?
Yes. We plan dumpster and material staging before the crew arrives, including alley access and street placement where needed. Streets in Somerville and nearby Bradley Gardens share the same constraint and we handle it routinely.
Stop Roof Problems Before They Cost You More
William Penn Roofing delivers expert craftsmanship, trusted certifications, and local expertise you can count on. Contact us today for your free estimate and see why Somerville property owners trust us for roofing and exterior solutions built to last.
Dedicated to serving New Jersey Homeowners
- Burlington County
- Bordentown
- Burlington
- Cinnaminson
- Evesham
- Florence
- Maple Shade
- Medford
- Moorestown
- Mount Laurel
- Willingboro
- Camden County
- Audubon
- Camden
- Cherry Hill
- Collingswood
- Gloucester Township
- Haddon Heights
- Haddonfield
- Pennsauken
- Voorhees
- Winslow
- Cape May County
- Avalon
- Cape May
- Dennis Township
- Lower Township
- Middle Township
- North Wildwood
- Ocean City
- Sea Isle City
- Stone Harbor
- Wildwood
- Essex County
- Belleville
- Bloomfield
- East Orange
- Irvington
- Livingston
- Maplewood
- Montclair
- Newark
- Short Hills
- West Orange
- Hunterdon County
- Clinton
- Flemington
- Frenchtown
- High Bridge
- Lambertville
- Lebanon
- Raritan Township
- Readington Township
- Stockton
- Tewksbury Township
- Mercer County
- East Windsor
- Ewing
- Hamilton Township
- Hightstown
- Hopewell
- Lawrence Township
- Pennington
- Princeton
- Robbinsville
- Trenton
- Somerset County
- Bernardsville
- Bound Brook
- Bradley Gardens
- Bridgewater
- Franklin Township
- Green Brook Township
- Green Knoll
- Hillsborough
- Martinsville
- Somerville
- South Bound Brook
- Warren Township