Commercial Roof Snow Removal in NYC, Westchester and Nassau

Snow drifts against parapets and rooftop units instead of settling flat. Drains and scuppers disappear under it. What melts off next week can do more damage than what fell this week.

$2M general liability insurance

MBE, DBE and LBE certified

OSHA-trained crews for roof-level work

Commercial roofing since 2004

Keystone Commercial Roofing removes snow and ice from commercial flat roofs across Manhattan, Brooklyn, Queens, the Bronx, Staten Island, Westchester and Nassau. 

Our OSHA-trained crews clear drifts, buried drains and scuppers using methods suited to the roof, while planning where cleared snow will go so it does not create another drainage or access problem. As commercial roofing contractors, we treat snow as a roof problem before it is a scheduling problem.

When Does a Commercial Roof Need Snow Removal?

Not every storm. Depth in the forecast is a poor guide on its own. A roof usually needs snow removal when:

  • Snow has drifted against parapets, HVAC curbs or rooftop units
  • Drains or scuppers are buried or blocked
  • Rain has fallen on snow, or a thaw and refreeze has formed ice
  • The roof has known ponding areas, aging seams or other known trouble spots 
  • Warning signs have appeared inside the building (see below)

If you are unsure, send us the address and a photo and we will tell you what we would look at first.

Why Snow Is a Roof Problem

Snow load is uneven

Wind piles snow around parapets, rooftop units, HVAC curbs and other obstructions, so some areas carry much deeper accumulations than the rest of the roof. These concentrated loads can affect drainage, roof access and the conditions crews encounter during clearing. Weight also varies with the snow itself: wet snow can weigh several times more than the same depth of dry snow, and rain falling on snow adds weight without adding depth.

Buried drains cause ponding

When snow covers drains and scuppers, meltwater has nowhere to go. Where parapets limit how water can escape, it collects on the roof.

Freeze-thaw builds ice

Ice at roof edges and around drainage points can trap meltwater and contribute to leaks. Removing it has to account for the roof assembly and the risks of working on frozen surfaces.

The thaw exposes problems

Melting snow reveals drainage issues, weak points and existing damage that were hidden beneath it.

Why Snow Is a Roof Problem

Clearing a commercial roof is not the same job as clearing a driveway. Membranes and seams can be damaged by the wrong tools or careless technique. Our process:

  1. Assess before anyone steps on the roof. We review roof type, access, the locations of drains and scuppers, and known trouble spots.
  2. Set a site-specific safety plan. That covers fall protection, hidden hazards, site conditions, and how snow and ice will be kept away from people below. 
  3. Locate and protect hazards. Skylights, roof hatches, mechanical curbs and roof edges are marked before work starts, instead of being found by stepping on them.
  4. Open the drains. Where it is safe, blocked drains and scuppers are cleared early so meltwater can leave the roof.
  5. Remove snow with methods suited to the roof system. No aggressive scraping and no exposed bare membrane.
  6. Plan where cleared snow will go. On a full-lot New York building there is often nowhere on the roof to stage it, and piling it against a parapet or over a drain just relocates the problem. 
  7. Document what we find and report it to the building manager.

Access is part of the plan too. Moving a crew and equipment onto an occupied roof, and getting cleared snow off the property, means working around entrances, pedestrian areas and conditions on the street below.

Not sure your roof needs it? Send the building address and a photo. Request roof snow removal or call (646) 851-3145.

Working Above an Occupied New York Building

A snow-covered roof hides open hatches, skylights, roof edges and mechanical curbs. That makes roof snow removal higher-risk work, which is why fall protection and appropriately trained crews are essential parts of the job.

  • Skylights and hatches are located and protected before anyone works near them.
  • Roof edges get the same treatment, because snow can hide both the edge and the drop beyond it.
  • Building operations are coordinated wherever possible: entrances protected, falling snow and ice kept away from people below, and roof access arranged with whoever manages the property, the same way we arrange access for a commercial roof inspection.

What the Crew Finds Under the Snow

Snow can conceal damage that predates the storm: a failing seam, a partly blocked drain, ponding water with nowhere to go. During clearing, we:

  • Flag blocked drains and standing water promptly, since they raise the risk of water entering the building during a thaw
  • Report other visible concerns, such as membrane wear or loose flashing
  • Treat any suspected soft area cautiously and flag it for appropriate inspection
  • Document findings so the building manager can decide what needs attention before the next snowfall

What happens next depends on what is found. Some items can wait for scheduled roof repair once the season eases. If the thaw has already exposed an active leak, it goes straight to 24/7 emergency roof repair.

Pre-Season Snow Removal Planning

Roof snow removal is easier to arrange in autumn than mid-storm. Early planning gives building managers time to set access, identify priorities and agree on a response before winter weather is forecast. During a storm, availability may be limited.

Planning starts with the building address, roof type, and the locations of drains and scuppers. From that we assess the roof’s needs and build a winter plan. Buildings already on one of our roof maintenance programs get winter snow removal as part of a year-round schedule, not a separate call every time it snows.

Where We Work

Crews cover commercial roofs across Manhattan, Brooklyn, Queens, the Bronx, Staten Island, Westchester and Nassau. We work at healthcare facilities, government buildings and industrial sites, where continued operations matter most in winter weather. 

See our service area and service list, including roof snow removal in Brooklyn and roof snow removal in the Bronx.

We are certified as a Minority Business Enterprise (MBE), Disadvantaged Business Enterprise (DBE) and Locally Based Enterprise (LBE), carry $2 million in general liability insurance, and have worked in commercial roofing since 2004.

FAQs

Does a flat commercial roof need snow removed every storm?

Not every storm. The need depends on snow distribution, drainage and roof conditions, not just the depth in the forecast. A few even inches over open drains is a different situation from deep drifts against a parapet with a buried scupper. The decision should reflect your roof’s specific conditions rather than a fixed depth.

Pricing depends on roof size, snow depth and density, access, the number of rooftop obstructions, whether snow is removed from the property, and whether you book per storm or through a seasonal agreement. Send the building address, roof type and a photo and we will quote it.

Response depends on storm conditions, roof access and how early the building is arranged with us. Sending your roof details and access instructions before winter is what makes a fast response possible. During a storm, availability may be limited.

We choose removal methods to protect the roof, and the right approach depends on the roof system and site conditions. That is why we plan roof snow removal as roofing work, not general snow clearing. Aggressive tools can damage a membrane, so it is also worth checking your warranty terms and the manufacturer’s guidance for your roof system.

Yes. Ice can build up at roof edges and around drains, where it may obstruct drainage or complicate clearing. The method depends on the roof assembly, the amount of buildup and the site’s safety conditions.

We plan where cleared snow will go as part of the job. If off-property removal is needed, we confirm the removal arrangements when we scope the work. 

No. This service covers the roof. Ground-level snow and ice is handled by a landscaping or grounds contractor. We handle what is above the entrance and everything the roof is holding.

Autumn, before snow is in the forecast. Early arrangements give building managers time to plan access and agree on response procedures.

Get Roof Snow Removal Lined Up Before the First Storm

Plan your roof snow removal before winter so there is time to settle access, site conditions and response arrangements. If snow is already in the forecast, call now.