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At Keystone Commercial Roofing, we repair and replace EPDM, modified bitumen, built-up, and single-ply roofing systems across the Bronx’s commercial and industrial building stock.
Not sure what’s on your roof? Send the building address
$2M general liability insurance
EPDM and ballasted rubber roofs are found across the Bronx’s older multifamily and industrial buildings, sometimes beneath layers of stone that have not been disturbed in years.
Modified bitumen and built-up asphalt systems are also common on older buildings, often carrying several generations of repairs by the time a leak brings someone onto the roof.
Single-ply replacements show up more on larger low-slope roofs, warehouse and industrial buildings where an aging built-up or EPDM system is getting replaced with a newer membrane system entirely.
Metal details such as coping, flashing, and gutters can appear on these systems regardless of the main membrane, along with steep-slope elements on some older buildings.
Recognizing which of these is actually on your roof matters more than it sounds like it should, since the repair approach, the inspection method, and even how a leak gets traced all depend on knowing which system you’re actually dealing with.
Roofs with a history of repairs are common across older commercial buildings here. A building that calls about a leak has often been patched multiple times already, sometimes by different contractors using different materials that don’t necessarily work well together.
What’s under the ballast or the gravel is frequently unknown until someone actually looks. A roof can appear stable from a distance while the membrane underneath has real, unaddressed problems.
Finding the leak when the roof has layers takes more than checking the spot where water’s showing up inside. Water can travel along a membrane or between roof layers before it becomes a visible interior stain, so the point where water appears inside may not be the point where it entered the roof.
Repair, restore, or replace depends on what an actual survey finds, not on the age of the roof alone. A twenty-year-old membrane in reasonable condition might just need targeted repair. A newer roof with widespread issues might already be past that option. We tell you which after looking, not before.
Not sure which of these is on your building? Send the address and we’ll tell you what’s up there.
We handle everything from leak repairs to full roof replacement, depending on what the building actually needs.
Roof repair for isolated failures on an otherwise sound roof.
24/7 emergency roof repair when a leak can’t wait for a scheduled visit.
Roof inspection and survey, especially useful on a roof with layers of prior repair nobody’s fully documented.
Roof maintenance programs for catching small issues early.
Roof installation and replacement when a roof has reached the point repair can’t reasonably extend.
Interior roof repair for the ceiling and interior damage a roof leak leaves behind.
Roof snow removal for clearing drains and scuppers before the thaw finds every weak point in an older membrane.
1946 Bathgate Avenue, the Bronx. Roof installation, 2023.
A documented Bronx commercial roofing project involving roof installation on an existing building.
Older commercial and industrial buildings across the borough carry exactly the kind of roof stock this page covers, including EPDM, modified bitumen, and single-ply systems, many of them decades old and due for repair, restoration, or replacement.
You can often get a general idea from the roof surface. Smooth black rubber can indicate EPDM, while granular or layered surfaces may indicate built-up or modified bitumen. Surface appearance does not always confirm the full roof assembly, though. If you’re still unsure, send us a photo with the building address and we can tell you what the visible system appears to be and whether it needs a closer inspection.
We repair older roofs when the condition of the system makes targeted repair reasonable. We survey the roof first and look at the membrane, previous repairs, drainage, flashing, and other accessible details before determining whether repair can reasonably extend its service life or whether replacement is warranted.
Yes. Previously patched roofs can make leak tracing more difficult because water may travel along the membrane or between roof layers before appearing inside the building. We inspect the visible roof conditions and trace likely water paths to identify the area where moisture may be entering the assembly.
Yes. Keystone Commercial Roofing carries $2 million in general liability coverage, and our crews follow OSHA-compliant safety practices throughout the work.
We serve commercial properties throughout the Bronx, including multifamily, industrial, warehouse, institutional, and mixed-use buildings.
Commercial roofing across Manhattan, Brooklyn, the Bronx, Queens, Staten Island, Westchester, and Nassau. MBE, DBE, and LBE certified, OSHA-compliant crews, and $2 million in general liability coverage since 2004.
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