Finding a roofing contractor in Pennsylvania usually starts with a problem: a stain on the ceiling, shingles in the yard after a windstorm, or a roof past its last decade. William Penn Roofing & Exteriors has handled repairs, replacements, and storm damage since 2008, on homes and commercial buildings across Bucks, Montgomery, Delaware, Chester, Lehigh, and Philadelphia counties.
Two offices, Doylestown and Montgomeryville, keep crews close enough to reach an active leak the same day. Every job runs under PA registration PA064886, backed by 120+ five-star reviews and Google Guaranteed status.
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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!
Whether the roof needs one repair or a full system, the goal does not change: stop the water, protect what is underneath, and avoid paying twice for the same problem.

We check the roof surface, flashing, chimney lines, penetrations, drip edge, and attic ventilation to find where water is actually entering. You receive photo documentation and a plain explanation of the findings.

Targeted repairs address damaged shingles, worn flashing, and failed penetrations. The point is to stop the leak without expanding into work the roof does not need.

When wear is widespread, a full system is the safer long-term call. Our residential roofing replacements include decking evaluation, ice and water shield, proper underlayment, and sealed penetrations, not new shingles laid over old problems.

Wind and hail loosen shingles, dent flashing, and open the roof to water before anyone notices from the ground. Storm damage repair starts with tarping and photo documentation that supports an insurance claim, with permanent work following once conditions allow.
The roofing cost calculator gives you a realistic ballpark based on roof size, material, and scope. It is a no-pressure way to set a budget before anyone comes out.
When a repair or replacement is more than you want to cover at once, financing options spread the cost over time. That makes it easier to fix damage now, before a minor issue becomes a structural one.
Offices, retail, and multi-unit buildings usually run flat or low-slope systems, where seam failures and ponding water cause the real damage. Our commercial roofing work covers properties across the region, including the older mixed-use blocks common through Delaware County.

Leaks, seam separation, membrane damage, and ponding water get targeted repairs that restore performance. Work is scheduled around your operating hours wherever possible.
When repeated repairs stop making financial sense, a full membrane replacement is the better long-term move. We plan the sequence to keep the building weather-tight throughout.

Coating systems improve waterproofing and reflectivity while extending service life on certain flat roofs. It is a way to buy years on a system that is worn but not failed.
Call the office and we schedule a visit to the property. The roof gets inspected properly, including flashing, penetrations, and attic ventilation, before anyone talks about solutions.
You receive a digital estimate in your inbox rather than a number guessed at on a clipboard. The scope, materials, deposit, and full payment schedule are laid out before anything is signed.
We lock in material and color selections, then place supplier orders once your choices are final. Start dates follow material availability and the forecast, because tearing a roof open ahead of an incoming storm helps nobody.
You get a confirmation email with your date and prep instructions. Landscaping and siding are protected before tear-off, and your project specialist arrives early and stays with the crew through the day.
Your project manager reviews the finished roof with you and answers anything still open. The crew clears the property with full debris removal and magnetic nail sweeps across the yard and beds.
Both the manufacturer product warranty and the workmanship warranty are registered after the install. You leave with documentation rather than loose ends.
One note worth knowing up front: some conditions only show up after the old materials come off. If damaged decking, failed flashing, or code corrections surface after tear-off, those findings are reviewed with you before any added work moves forward.
The right system depends on slope, drainage, building type, and how long you plan to stay.

The practical choice for most suburban homes. Modern architectural shingles hold up well against wind and typically last 20 to 30 years.

Built for longevity and storm resistance, often lasting 40 years or more. Sheds snow well, which matters at the northern end of our range around Coopersburg.

Natural character and real insulation value, in exchange for ongoing maintenance. A fit for specific architectural styles rather than a default choice.

Usually specified for architectural details, bays, and accents on older homes through West Chester and similar boroughs. Develops a patina over time while staying exceptionally durable.

A premium material with a lifespan measured in decades. Common on older homes in places like Chestnut Hill, where matching what is already on the roof matters, and worth repairing long past the point asphalt would be replaced.

A reflective single-ply membrane built for seam strength and long-term performance. Common on commercial buildings and low-slope residential additions.

A flexible rubber membrane used widely on flat and low-slope roofs. Handles temperature swings well and repairs cleanly.

A layered flat roofing system designed for long-term wear and regular foot traffic. A good fit where roof access is part of daily building use.
Roof problems rarely stay on the roof. Drainage, cladding, and openings all feed into the same water management system, and splitting them across contractors is how details get missed.

Overflowing or sagging gutters lead to fascia rot and foundation issues. Properly sized gutter systems move water away from the roofline instead of down the wall.

Damaged cladding traps moisture and drags down insulation performance. Siding replacement is sealed and integrated at every roof and drainage connection point.

A skylight should add light without becoming a leak. Skylight work lives or dies on flashing detail, which is why we handle it with the roof rather than after it.

Trapped moisture behind stucco causes structural damage well before it shows on the surface. Stucco remediation corrects the underlying cause instead of patching the symptom.
Drafts and worn frames undo the work a tight roof does. We install windows and doors from Provia to keep the exterior envelope sealed.
A premium shingle installed wrong fails on the same schedule as a cheap one, which is why manufacturers tie their strongest warranty terms to certified installers. We hold those certifications, and every completed roof leaves with both the manufacturer product warranty and our workmanship warranty registered.
Roofing is a crowded trade across these counties, and most quotes look the same on paper. The difference shows up in who answers the phone when water is already coming through a ceiling.
Owner David LaSalla still runs estimates personally, and customers name him directly in their reviews. Here is what that looks like on an actual job:

Same-day response on active leaks, the line that repeats most often in our reviews

Estimates run by the owner, not a sales rep working a script and a commission

Straight answers on repair versus replacement, even after another company has quoted a full tear-off

Most residential roofs torn off and replaced in a single day

A project specialist on site from the first morning through the final walkthrough

Full cleanup with magnetic nail sweeps across the yard and beds

BBB accredited, licensed, insured, and bonded, with both warranties registered after every install

Local youth athletic team sponsorships and ongoing involvement with Kiwanis

Work you can actually look at, from copper installations in Doylestown to commercial TPO at Buckingham Commons in Furlong, in our before and after gallery
None of that comes from working a franchise territory. It comes from being based here since 2008.
Bucks, Montgomery, Delaware, Chester, Lehigh, and Philadelphia counties, dispatched from our Doylestown and Montgomeryville offices. If you are near the edge of that range, call and we will tell you straight whether we can get to you.
Pennsylvania requires home improvement contractors to register with the Attorney General’s office. Ours is PA064886, and any contractor working on your home should give you that number without hesitating.
Most townships across the counties we cover require one for a full replacement, and the specifics vary by municipality. We pull the permit as part of the project.
Active leaks get same-day attention whenever the schedule and weather allow, with tarping first if the roof cannot be worked on safely. Running two offices is what makes that response time realistic across a six-county area.
Yes. We are separately registered in New Jersey under NJ-13VH12052900 and cover a similar footprint across the river, with the same crews and the same standards.
By the time a stain shows on the ceiling, the leak has usually been running for a while, and the repair only gets more expensive from there.
Book an inspection and you get photo documentation, a straight answer on repair versus replacement, and a written scope with a real timeline. Most repairs finish the same day, and most full replacements are done inside two.
Answer a few quick questions and we'll email your estimate.