Home Base · Bridesburg
Philadelphia Roofing Company
Rowhomes, flat roofs, party walls, tight blocks — Philadelphia roofs are their own thing, and they’ve been our home turf for over 20 years. In-house crews, straight answers.
20+ Years In The City
Rowhome Specialists
24-Hr Response
Thermal-Drone Imaging
Get Your Free Philly Roof Inspection
Rowhome, twin, or single — we know the housing stock.
Free, no-obligation, itemized. We’ll tell you straight what it needs.
The Rowhome Is Our Home Turf
Philadelphia Roofs
Are Their Own Thing
Block after block of rowhomes with flat and low-slope roofs, tight access, shared party walls, and roofs that were last touched decades ago. A roofer who mostly does suburban pitched-shingle jobs learns that the hard way — up on your roof, on your dime.
We’re a local roofing company, not a call center that dispatches whoever’s closest. Our crews are in-house, they work for Garrison, and they know the difference between a Fishtown rowhome and a twin in the Northeast because they’ve been on both this month. When you call, you get a straight answer about your roof — whether that answer makes us money or not.
All Over The City
Roofing Across
Philadelphia’s Neighborhoods
Different housing stock, different roof problems, same standard of work.
Center City
Flat and low-slope rowhome roofs, tight sidewalk access, and rooftop decks squeezed onto historic buildings.
South Philly
Dense blocks of rowhomes where a leak on one roof can run behind a party wall onto the next.
Northeast Philadelphia
Twins, singles, and rowhomes — a mix of flat, low-slope, and pitched-shingle roofs.
Roxborough & Manayunk
Older homes on steep streets that need a roofer who plans access before the truck shows up.
Fishtown & The River Wards
Original rowhome roofs on 100-plus-year-old homes, plus new rooftop-deck builds on rehabs.
Rowhome Specialists
Where Most Roofers Get Out Of Their Depth
Historic Rowhome
Roofing Done Right
A Philadelphia rowhome roof is usually flat or low-slope, wedged between two neighbors, with a shared party wall on each side and barely any room to work. Water doesn’t run off a flat roof the way it does off a pitched one — it sits, finds the weak seam, and works its way in.
The drain box, the seams, the spot where your roof meets the neighbor’s higher wall — those are the places that fail. Get any of it wrong and the leak shows up two rooms away from where the water actually got in.
We know how the party walls and flashing have to tie together, how to stage a job on a block with no driveway and cars parked bumper to bumper, and how to work on a 100-year-old roof without wrecking the plaster ceilings underneath.
For flat and low-slope rowhome roofs, see our flat roofs page. If your rowhome has (or could have) a rooftop terrace, we build and waterproof those too — roof decks.
Thermal-Drone Imaging
The Leak Travels
Finding Leaks
You Can’t See
On a flat rowhome roof, a leak can travel a long way under the surface before it drips through a ceiling — which is why patching the spot where you see water usually doesn’t work. The water’s real entry point is often several feet away.
Our drone reads temperature differences across the roof and shows us the wet spot, even when there’s nothing to see from the ground or the ladder.
On Philadelphia’s flat and low-slope roofs, that’s the difference between fixing your roof once and coming back three times. Almost no other roofer in the city offers it.
What The City Calls Us For
Philadelphia
Roofing Services
01
Roof Repair
Leaks, failed flashing, storm damage, and the seam and drain-box failures that plague flat rowhome roofs.
02
Flat Roofs
Repair, replacement, and new membrane on the flat and low-slope roofs most of the city is built on.
03
Roof Installation & Replacement
Full tear-off and new roofs, done by our own crews — not subcontractors.
04
Roof Decks
Waterproof rooftop terraces built to hold up to the weather and the neighbors’ foot traffic.
05
Fiberglass Roofs
A Philadelphia specialty of ours, especially on roof decks and low-slope rowhome roofs.
Why The City Calls Us
Why Philadelphia
Calls Garrison
20+ years on Philadelphia roofs, including the historic rowhomes most roofers would rather avoid
GAF Certified Residential Roofing Contractor — work done to manufacturer standard
In-house crews, no subcontractors — the people on your roof work for Garrison
24-hour emergency response — an active leak doesn’t wait for business hours, and neither do we
Certified Spanish-speaking team — so every homeowner gets a clear explanation
Honest assessments — if a repair will hold, we’ll tell you, even when a replacement would pay us more
Drag The Handle
Philadelphia Jobs,
Before and After
Real Garrison work on real Philadelphia houses.
Recent Philadelphia Work
On Philadelphia
Roofs Every Day
Rowhomes, twins, decks and commercial buildings across the city. Tap any photo to open it full size.
★★★★★
"I recommend Garrison Roofing, outstanding service from start to finish! Key Highlights: * Professional & On-Time: The crew arrived right on schedule, communicated clearly throughout the entire process, and worked efficiently to complete the job on time. * Quality Workmanship: Their attention to detail and craft is top-tier. They addressed structural issues before laying the new materials, ensuring the roof was built to last. * Spotless Cleanup: they made sure the entire perimeter—grounds, driveway, and gutters—was cleared of nails and debris before leaving. * Transparent Pricing: No hidden fees or surprise costs. The estimate was accurate and fair for the exceptional quality provided. If you need repairs or a full roof replacement, Garrison Roofing is the real deal. I’d gladly hire them again and recommend them to any friends or family!"
T
Google review
★★★★★
"Had gutter damage from a storm. They came out same day to give an inspection. The guys were nice, quick, and prices were reasonable. Repairs were done in a timely matter. Would definitely recommend."
Alexa L.
Google review
★★★★★
"Great pricing and quick responses!"
Melissa U.
Google review
Straight Answers
Frequently Asked Questions
What roofing challenges are unique to Philadelphia rowhomes?
Rowhome roofs are usually flat or low-slope, packed tight between two neighbors with shared party walls and almost no room to work. Water sits instead of running off, so seams, drain boxes, and the flashing where your roof meets a neighbor’s wall are the usual failure points. And because a leak can travel under a flat roof before it shows up inside, finding the real source takes experience — and often our thermal-drone imaging.
Does Garrison Roofing service Center City and South Philly?
Yes. We work across the whole city — Center City, South Philly, Northeast Philadelphia, Roxborough, Manayunk, Fishtown, and the neighborhoods in between. Tight access and dense blocks are normal for us, not a reason to pass on the job.
What’s the most common roof type in Philadelphia?
Flat and low-slope roofs, by a wide margin, because so much of the city is rowhomes. That’s exactly the kind of roof most likely to leak at a seam or drain box, and exactly the kind we work on every day. Pitched shingle roofs are common in parts of the Northeast and the outer neighborhoods, and we handle those too.
How does Garrison handle historic Philadelphia properties?
Carefully, and with a plan made before we show up. On a 100-year-old rowhome we account for the party walls, the older flashing details, and the plaster ceilings underneath that can’t take a beating. We’ve been doing this for over 20 years, so we know how these roofs are built and how to work on them without creating new problems inside the house.
Free & No-Obligation
Get Your Free Philadelphia
Roofing Estimate
Whether it’s a leak on a South Philly rowhome, a flat roof at the end of its life in the Northeast, or a deck build in Fishtown — get a free inspection from a local company that actually knows Philadelphia roofs.