Commercial roofing contractor for South Jersey & Philadelphia.
Repair and full replacement for condominiums, commercial, and industrial properties. Low-slope TPO, EPDM, PVC, modified bitumen, built-up, spray foam, metal, coatings, shingles, and slate. Engineered for coastal wind uplift and backed by our 35-year TPO warranty.
Commercial Roof Assessment
Active leak, storm damage, or planned capital replacement? Our Linwood, NJ team inspects commercial low-slope and steep-slope roofs across NJ and Philadelphia.
Commercial roof repair and replacement
From low-slope membranes to steep-slope slate, our crews repair and replace the roof systems on your property — with a focus on stopping leaks and preventing the water damage they cause.
Low-Slope Roofing
TPO, EPDM, PVC, modified bitumen, built-up roofing, spray foam, metal, and coatings for flat and low-slope commercial and industrial roofs — repaired or fully replaced.
DetailsSteep-Slope Roofing
Slate repair and replacement, including steep-slope systems on mixed-use and institutional properties.
DetailsCoastal Roofing
Roofs built to hold up to coastal wind uplift and exposure — a key consideration on Jersey Shore and waterfront properties.
DetailsLeak Detection & Repair
We use advanced leak detection tools to find the true source of a leak fast — and every repair carries a written warranty.
DetailsCommercial roof installations & restorations.
From heat-welded TPO to natural slate, here's a look at the systems our crews install and repair across New Jersey, Philadelphia, and the Mid-Atlantic.
No subcontractors. Our own crews do the work.
Many commercial roofers sell the job, then hand it to a subcontractor you've never met. Datum doesn't. Every roof we touch is installed, repaired, and inspected by our own W-2 employees — the same crews who carry our 35-year warranty and answer to our name. That's how we keep change orders to just 6% of replacements and finish on time 96.7% of the time.
In-house W-2 crews
Trained, insured, and accountable to Datum — not a temp labor broker.
Consistent quality
The same crews install and warranty the roof, so workmanship stays accountable end-to-end.
Warranty that holds
When we say 35-year TPO warranty, the company standing behind it is the one that built it.
On time, on budget
Direct crew control is why 96.7% of our projects finish on schedule.
A roofing contractor boards and property managers trust.
Most roofers patch the spot. Datum finds the cause — because we're backed by Lasher's 30+ years of commercial roofing and structural restoration experience. The result is a repair or replacement that actually stops the leak and holds up over time.
Learn about Datum & LasherWe find the real source of a leak
Advanced leak detection tools pinpoint where the water's getting in — so the repair fixes the cause, not just the spot where it shows up inside.
Built for coastal wind and weather
We design and install roofs that hold up to coastal wind uplift and exposure — the conditions that make a roof fail early if they're ignored.
Experience with boards, managers & owners
Our crews are experienced working with condominium boards, property managers, and building owners — coordinating access, schedules, and clear communication.
Backed by 30+ years of Lasher
Datum is a Lasher company. That's 30+ years of commercial roofing and structural restoration experience standing behind every roof we touch.
See the roof. Do the math. Before you sign.
Two free, interactive tools that show what's really on top of your building — and what it costs to keep it there. Built for property managers, condo boards, and owners who want to understand the roof before they pay for it.
3D Roof Assembly Explainer
A commercial low-slope roof isn't one sheet — it's six engineered layers. Toggle the exploded view, rotate the assembly, and click any layer to see what it does and why it matters: structural deck, vapor barrier, polyiso insulation, cover board, membrane, and edge metal.
Open the 3D ExplainerRoof ROI & Reserve Study Calculator
Model your roof's remaining useful life, project inflation-adjusted replacement costs, compare a silicone restoration against a full tear-off, and calculate the annual reserve contribution needed to avoid a special assessment — per unit, per month.
Open the ROI Calculator35-year warranty on new TPO systems.
And a written warranty on every roof repair. We build it right the first time — then we stand behind it.
Commercial roofing across South Jersey, Philadelphia & the Main Line.
Headquartered in Linwood, NJ, Datum Roofing serves property managers, condo associations, and industrial facility directors throughout New Jersey and Pennsylvania.
Commercial roofing questions, answered.
What types of commercial roofs does Datum repair and replace?
We repair and replace low-slope and steep-slope roofs — including TPO, EPDM, PVC, modified bitumen, built-up roofing, spray foam, metal, coatings, and slate — on condominium, commercial, and industrial properties.
How quickly can you respond to an active roof leak?
Active leaks get priority. Call (609) 910-0668 and we'll schedule a crew to assess the roof and stop the water as quickly as we can.
Do you work with condominium boards and property managers?
Yes. We're experienced coordinating access, scheduling, and communication with boards and management companies across New Jersey and the Philadelphia area.
Do you handle coastal and high-wind properties?
Yes. Wind uplift is a key design consideration on coastal roofs, and we design and install assemblies built to hold up to coastal exposure.
What warranty comes with the work?
A 35-year warranty on new TPO systems and a written warranty on every roof repair we perform.
What areas do you serve?
Condominiums, commercial, and industrial properties throughout New Jersey, Philadelphia, and the surrounding suburbs.
Have a roof that needs attention? Let's find the cause — not just the leak.
Tell us about your property and the issue. Whether it's an active leak, an aging roof, or a planned replacement, we'll get back within one business day to schedule an assessment.
- 35-year warranty on new TPO systems
- Written warranty on every repair
- Experienced with condo boards, managers & owners
Request a free roof assessment.
Fill this out and we'll reach out within one business day to schedule a look at your roof.