DeMarco Roofing Inc. – Commercial Roofers

DeMarco currently provides specialized products and services for your commercial needs, including historical restoration, repair and General Contracting. We incorporate a skilled labor force and knowledgeable leaders in the field to fulfill all our customer’s needs. Demarco proudly carries an A+ rating as an Accredited Better Business Bureau Company.

Please take a moment to browse through our website to learn more about us and how we can offer you the DeMarco Difference.

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“I have nothing but positive things to say about your company, and mainly attributed to my interaction with both Kim and Victor. One particular issue was very complex and unusual in nature and despite the many roadblocks, they were able to identify and remedy the problem and provide real time information so I could effectively communicate with the tenant. It is rare to find the level of service that your team provides and they are top notch!”_Tracey S. | Property Manager.PreviousBefore:

This project had three layers of membrane and built up roof. It also had over 100 penetrations, two cell phone providers, four antenna arrays, and one of them was only 12″ above the deck. In addition to this mess there were multiple leaks.After:Our team removed all of the roofing down to the concrete deck. DeMarco carefully coordinated work dividing it into sections. We installed a fully adhered 90 mil EPDM Carlise system that provided the owner with a 30 year No Dollar Limit Warranty.Before:

DeMarco was engaged by the Columbus Fair Auto Auction to evaluate a leaking roof and were concerned about its structural integrity. We performed several core cuts. The core cuts showed that leaks had soaked all the insulation. The insulation was removed but because of moisture being trapped against the steel roof deck the panels had begun to rust. We did several pull tests and discovered the deck was no longer adequate and needed to be replaced.After:

The old roof deck was removed, and DeMarco installed new steel decking. New poly-iso insulation and EPDM roof membrane were installed and the building is now safe, dry, and functional. The manufacturer provided a 20 year NDL, or “No Dollar Limit” warranty on the new roof.Before:

DeMarco, Inc. was recently engaged by a building owner to flash a roof curb for a new chiller plant. Lack of water treatment had caused the evaporator tubes to leak. It did not take long for the shell in turn to leak and rust through. The flashing of the roof curb the unit sits on are caulked around the edges and depending on conditions need to be re-caulked every 3-5 years. They are not designed to be exposed to a constant stream of water such as the condition created by the failed chiller. One of our competitors thought the deck was just fine and recommended only reworking the roof curb. Luckily for the owner, the HVAC contractor and an alert new property manager requested further inspection before setting the new, more efficient, (and heavier) chiller plant.After:

The failed decking was removed and replaced. Note a new piece of steal deck that was loose laid over the rusting one, We removed and all the rusted deck. DeMarco fabricated a new curb for the rooftop unit and flashed all the penetrations. DeMarco worked with the owner’s HVAC company to coordinate the tear off and repair with the delivery of the new roof top unit. The building occupants are now comfortable and don’t have to worry about the unit crashing into the building.Before:

Leaking from the tower had caused caulking and the drain to fail. Ponding water was diffusing thru the membrane. DeMarco had performed core cuts during our initial assessment and determined that all of the existing insulation was soaked and the wooden deck was rotting out. DeMarco coordinated with Case Bowen Companies HVAC contractor to begin demolition within hours after the chiller was removed. All the roofing, insulation and re-decked the area.After:

Due to the high traffic use, the area was re-roofed with 3″ of polyiso insulation, 90 mil EPDM, and the entire area covered with walk pads. It isn’t literally bulletproof, but the chiller area roof will for sure hold up to any HVAC tech who walks all over the “extra” screws when they service the unit. Manufacturer provided the owner a 20 year No Dollar Limit warranty.Before:

Like many buildings this project used the roof top for many of the building service functions. The elevator equipment room, an electrical room, pumps, roof top units, and a cooling tower were all located on the roof and the foot traffic generated to service them was taking its toll on the roof that was over 18 years old. Attempts to maintain the roof had been made but patches on top of patches, poor details, and incompatible materials had resulted in persistent leaks that damaged the building and were a great source of annoyance to the condominium owners.After:

Everything was removed to the structure and the roof was re-decked with plywood, poly-iso insulation and a new HD coverboard. A Thick 90 mil EPDM membrane was installed, and the entire area was covered with walk pads to withstand the foot traffic and protect the roof.Before:

This building had equipment cabinets on a 12″ high superstructure with multiple cable trays, a forest of penetrations, and a bunch of exhaust fans.After:

We were able to work closely with the cell phone provider to remove the grating in order to access the roof carefully & raise the cables so we could roof underneath. In some instances we coordinated our material lifts with temporary relocation of their facilities. By working closely with the cellular company we never had to de-energize or interrupt their service. DeMarco’s workers used non-ionizing radiation monitors to make sure the work was carried out safely.Before:

This drain is already in a less than ideal spot and does not have the proper fall to it. Further complicating things are multiple conduits feeding the cell phone providers equipment shelter. There is also an abandoned plenum that was used for additional conduits and because it was near the bottom of the superstructure ladder, it was used as a step by people servicing the equipment.After:

DeMarco created positive drainage and sumped the drain. We also worked with the cell phone provider to sort out and clean up the conduits penetrating the deck and grouped them into a pitch pocket. Lastly, we capped the abandoned plenum and covered it with 1/8″ stainless steel checker plate so techs can step on it as much as they want.Before:

This project had three layers of membrane and built up roof. It also had over 100 penetrations, two cell phone providers, four antenna arrays, and one of them was only 12″ above the deck. In addition to this mess there were multiple leaks.After:Our team removed all of the roofing down to the concrete deck. DeMarco carefully coordinated work dividing it into sections. We installed a fully adhered 90 mil EPDM Carlise system that provided the owner with a 30 year No Dollar Limit Warranty.Before:

DeMarco was engaged by the Columbus Fair Auto Auction to evaluate a leaking roof and were concerned about its structural integrity. We performed several core cuts. The core cuts showed that leaks had soaked all the insulation. The insulation was removed but because of moisture being trapped against the steel roof deck the panels had begun to rust. We did several pull tests and discovered the deck was no longer adequate and needed to be replaced.After:

The old roof deck was removed, and DeMarco installed new steel decking. New poly-iso insulation and EPDM roof membrane were installed and the building is now safe, dry, and functional. The manufacturer provided a 20 year NDL, or “No Dollar Limit” warranty on the new roof.Before:

DeMarco, Inc. was recently engaged by a building owner to flash a roof curb for a new chiller plant. Lack of water treatment had caused the evaporator tubes to leak. It did not take long for the shell in turn to leak and rust through. The flashing of the roof curb the unit sits on are caulked around the edges and depending on conditions need to be re-caulked every 3-5 years. They are not designed to be exposed to a constant stream of water such as the condition created by the failed chiller. One of our competitors thought the deck was just fine and recommended only reworking the roof curb. Luckily for the owner, the HVAC contractor and an alert new property manager requested further inspection before setting the new, more efficient, (and heavier) chiller plant.After:

The failed decking was removed and replaced. Note a new piece of steal deck that was loose laid over the rusting one, We removed and all the rusted deck. DeMarco fabricated a new curb for the rooftop unit and flashed all the penetrations. DeMarco worked with the owner’s HVAC company to coordinate the tear off and repair with the delivery of the new roof top unit. The building occupants are now comfortable and don’t have to worry about the unit crashing into the building.Before:

Leaking from the tower had caused caulking and the drain to fail. Ponding water was diffusing thru the membrane. DeMarco had performed core cuts during our initial assessment and determined that all of the existing insulation was soaked and the wooden deck was rotting out. DeMarco coordinated with Case Bowen Companies HVAC contractor to begin demolition within hours after the chiller was removed. All the roofing, insulation and re-decked the area.After:

Due to the high traffic use, the area was re-roofed with 3″ of polyiso insulation, 90 mil EPDM, and the entire area covered with walk pads. It isn’t literally bulletproof, but the chiller area roof will for sure hold up to any HVAC tech who walks all over the “extra” screws when they service the unit. Manufacturer provided the owner a 20 year No Dollar Limit warranty.Before:

Like many buildings this project used the roof top for many of the building service functions. The elevator equipment room, an electrical room, pumps, roof top units, and a cooling tower were all located on the roof and the foot traffic generated to service them was taking its toll on the roof that was over 18 years old. Attempts to maintain the roof had been made but patches on top of patches, poor details, and incompatible materials had resulted in persistent leaks that damaged the building and were a great source of annoyance to the condominium owners.After:

Everything was removed to the structure and the roof was re-decked with plywood, poly-iso insulation and a new HD coverboard. A Thick 90 mil EPDM membrane was installed, and the entire area was covered with walk pads to withstand the foot traffic and protect the roof.Before:

This building had equipment cabinets on a 12″ high superstructure with multiple cable trays, a forest of penetrations, and a bunch of exhaust fans.After:

We were able to work closely with the cell phone provider to remove the grating in order to access the roof carefully & raise the cables so we could roof underneath. In some instances we coordinated our material lifts with temporary relocation of their facilities. By working closely with the cellular company we never had to de-energize or interrupt their service. DeMarco’s workers used non-ionizing radiation monitors to make sure the work was carried out safely.Before:

This drain is already in a less than ideal spot and does not have the proper fall to it. Further complicating things are multiple conduits feeding the cell phone providers equipment shelter. There is also an abandoned plenum that was used for additional conduits and because it was near the bottom of the superstructure ladder, it was used as a step by people servicing the equipment.After:

DeMarco created positive drainage and sumped the drain. We also worked with the cell phone provider to sort out and clean up the conduits penetrating the deck and grouped them into a pitch pocket. Lastly, we capped the abandoned plenum and covered it with 1/8″ stainless steel checker plate so techs can step on it as much as they want.Before:

This project had three layers of membrane and built up roof. It also had over 100 penetrations, two cell phone providers, four antenna arrays, and one of them was only 12″ above the deck. In addition to this mess there were multiple leaks.After:Our team removed all of the roofing down to the concrete deck. DeMarco carefully coordinated work dividing it into sections. We installed a fully adhered 90 mil EPDM Carlise system that provided the owner with a 30 year No Dollar Limit Warranty.Next