Family Owned & Operated · 20+ Years
About Garrison Roofing
Tell people the truth about their roof, do the work right, and stand behind it. No pressure, no upsell, no crew of strangers showing up in an unmarked truck.
GAF Certified
No Subcontractors
OSHA Compliant
Licensed & Insured
Get An Honest Read On Your Roof
Free inspection, photo-documented, no obligation.
Free, no-obligation, itemized. We’ll tell you straight what it needs.
One Simple Idea
Tell People the Truth.
Do the Work Right.
Garrison Roofing has been fixing and replacing roofs across the Philadelphia area for more than 20 years. In that time we’ve built the company on one simple idea: tell people the truth about their roof, do the work right, and stand behind it. That’s it. No pressure, no upsell, no crew of strangers you’ve never met showing up in an unmarked truck.
We’re a GAF Certified roofing contractor serving Philadelphia, South Jersey, Montgomery County, and up into Northeast PA and the Poconos. Homeowners call us. Property managers call us. And a lot of them call us back years later, because we did what we said we’d do the first time.
The Garrison Family
Two Brothers,
One Name on Every Roof
The people who answer the phone are the people on your roof. GAF-certified, 20+ years in Philadelphia — no upsells, no scare tactics.
Honest Assessments
Not A Slogan On A Truck
The Way We’d Do It
On Our Own Roof
Most people don’t know much about roofs, and roofers know that. It’s an easy trade to cut corners in, because the customer can’t see the deck under the shingles or the flashing behind the wall. Plenty of contractors use that to sell a full replacement when a repair would have held for another ten years.
We go the other way. When we inspect your roof, we tell you what we’d do if it were our own house. Sometimes that means a repair instead of a replacement, even though the replacement is the bigger check.
We’d rather earn your trust and be the roofer you call for the next 20 years than make one big sale and never hear from you again. That’s not a slogan we printed on a truck — it’s how the whole company runs.
In-House Only
Worth Understanding
In-House Crews.
No Subcontractors.
A lot of companies sell you the job and then hand it off to a subcontractor. You meet a polished salesperson, sign the contract, and a crew you’ve never spoken to shows up to do the actual work. Nobody’s really accountable, and the quality is a coin flip.
Garrison doesn’t work that way. The people who show up to your home work for Garrison. Our crews are trained the same way, held to the same standard, and answer to the same company that signed your contract.
We’re also OSHA compliant, fully licensed and insured, and our team is certified to work safely on the older, steeper, and more complicated roofs this region is full of.
Twenty Years In One Region
What Sets Us Apart
Twenty years in one region teaches you things a general roofer never learns. A few of the ways that shows up:
01
Thermal-Drone Diagnostics
We use thermal-imaging drones to find hidden moisture and pinpoint leaks, especially on flat and low-slope roofs where water travels before it ever shows up inside. Almost no roofer in the area offers this.
02
Documented Inspection Reporting
Every inspection comes with photos and a written report. That matters if you're a homeowner making a decision — and it really matters if you're a property manager budgeting across a portfolio.
03
Historic Rowhome Expertise
Old rowhomes are built nothing like new construction. Their flat roofs, party walls, and tight access trip up roofers who don't know them. We've worked on them for two decades.
04
A Certified Spanish-Speaking Team
Every homeowner deserves a clear explanation of what's wrong and what we're going to do about it, in the language they're most comfortable in.
GAF Certified
Real Protection, Not A Handshake
Certified, Insured,
And Backed by Warranty
Being a GAF Certified contractor isn’t just a logo. It means GAF has vetted our workmanship and lets us install their full roofing systems the right way — which is what makes their manufacturer warranty coverage possible on the roofs we put on.
Paired with our own workmanship standards, you get real protection on a new roof rather than a handshake.
GAF Certified Residential Roofing Contractor · OSHA compliant, fully licensed & insured.
It Hasn’t Changed
Our Mission
Give people a safe, reliable, high-quality roof over their heads, built with honest workmanship, and priced fairly with a free, no-obligation, itemized estimate every time. We want the roof to last, and we want you to feel good about who put it there.
If that’s the kind of roofer you’re looking for, we’d like to earn the job. Read what our customers say on our reviews, look through everything we do on our roofing services page, and when you’re ready, get in touch.
The Crew
The People On
Your Roof
In-house crews, not subcontractors — the same faces from estimate to cleanup. Tap any photo to open it full size.
Straight Answers
Frequently Asked Questions
How long has Garrison Roofing been in business?
More than 20 years serving the Philadelphia area, including South Jersey, Montgomery County, and Northeast PA into the Poconos.
Is Garrison Roofing licensed and insured?
Yes. We're fully licensed, insured, and OSHA compliant. Our crews are trained to work safely on the older and steeper roofs common throughout the region.
Does Garrison Roofing use subcontractors?
No. All of our crews are in-house. The people who show up to your home work for Garrison, are trained to our standard, and are accountable to the company that signed your contract.
What certifications does Garrison Roofing hold?
We're a GAF Certified Residential Roofing Contractor, which means our workmanship has been vetted by the manufacturer and we're authorized to install their full roofing systems. Our team is also OSHA compliant and includes certified Spanish-speaking members.
Free & No-Obligation
Talk to a Roofer
Who’ll Tell You Straight
Want an honest read on the shape your roof is in? Get a free inspection from a local roofer who’s been doing this the right way for 20 years.