Commercial & Industrial Roof Replacement in the Northeastern US

Vanguard Roofing has been in the commercial roofing business for over 40 years. Our company is built on and stands by a solid reputation of expertise and customer satisfaction. Our specialty is commercial and industrial roofing in New York and the surrounding areas. We are trained and certified installers of flat roofing, metal roofing, slate roofing and shingle roofing. In 2010 Vanguard Roofing surpassed 8 million square feet of managed commercial roofs. We know industrial roofing and stand behind our work. We offer commercial roof repair, replacement and roof maintenance plans. Contact Vanguard Commercial Roofing today for more information about our industrial roofing services and how we can help your business. We proudly offer services from

New Flat Commercial Roof

Flat Roof Replacement

A flat roof is the most common type of commercial or industrial roofing. Historically made up of an underlayment and rolled roofing, there are many choices in type and design of flat roofing to cover your industrial property and insure a long-lasting roof.  Vanguard Roofing’s skilled roofers are trained to install the quality flat roof your building requires. Learn more about your flat roofing options.
Flat Roofing

Metal Roof Replacement

Metal Roof Replacement

Metal roofs are long lasting, maintenance-free roofing solutions for commercial, industrial, or institutional roofs. Non-combustible, they provide fire, wind, and impact resistance.  Vanguard Roofing installs metal replacement roofing solutions that can reduce the heating and cooling costs of your structure. Find out more about commercial metal roofing options.
Metal Roofing Installation

New Slate Roof

Slate Roof Replacement

The traditional beauty of slate is undeniable. Although a costly roofing option “up front”, the longevity of slate surpasses that of less expensive roofing options by several lifetimes. When maintaining the integrity of historic building restorations, or giving an historic look to a new structure, slate is a beautiful and classic roofing option. Vanguard’s expert roofers are trained and experienced slate roofers.
Slate Roof Installation


Behind the Scenes of a Vanguard Roofing Commercial Roof Replacement

A 1,742,400 sq. ft. manufacturing facility called us to come to inspect their flat roofing system. They asked us to check for deterioration due to the age and present our findings to them. They also inquired about the cost of new skylights.

The Inspection

The first thing we noticed is that the facility roof was divided into over 20 sections. These sections were being reroofed over a period of years. The owners decided over 20 years ago that due to the size of the facility, they would do the roofing in sections. This strategy allows each section to have a lifespan in a different yearly quarter.
After our close visual inspection, we found the section was compromised of an asphalt and gravel built-up roof assembly. It was extremely dry, oxidized, and brittle. Photo-oxidation by the sun, in conjunction with extreme heat and cold, had broken down the waterproofing layer.

The Plan

Our plan was to remove the old roof assembly down to the deck, removing areas of damaged metal decking.  Then we would install a vapor barrier over the metal deck, followed by a new .060 PVC roofing membrane.

Safety Measures

During pre-job walkthroughs, we determine what safety measures are needed. We use a system of trash chutes, safety rails, and tie-off equipment for all ladders at our job sites. For this job, we also decided to use interior tarps to protect the inventory, as this was a paramount concern.

Starting the Project

We started the project at the lowest point of the roof by removing the old gravel with a Roof Vac Machine. Once the gravel was removed we removed the old asphalt-based material. We did this by cutting the roof by hand and with a machine. As we progressed to the highest roof point, we tied everything off to ensure dust was kept to a minimum. It also kept the area watertight.  

After exposing the metal deck we were able to determine what areas needed to be replaced. When the replacement was complete, we cleaned and primed the metal deck area to prepare for the vapor barrier installation.

Vapor Barrier Protection

Condensation may form when the interior building temperature rises. The heat and moisture are pushed to the ceiling and out of the roof into the insulation, often damaging the new roofing system. A Vapor Barrier between the roof deck and insulation is used to prevent this from occurring. 

Skylights Installation

The new skylights were then installed. We also installed OSHA approved safety cages, used to prevent falling objects to enter the building.  Expansion joints were used as tie-offs between the new section and the older section.

Insulation Installation

Next, tapered insulation, tapered edge strip, and Drain Sumps were installed. They direct water flow towards the drains to help reduce ponding water.

We installed insulation in a staggered fashion to move the water away from the skylights and towards the drains.  A Tapered Edge strip was installed at the expansion joint to direct water away from this tie off detail.

We also used a Drain Sump below the roofline along with the tapered insulation. This is more effective to help shed water and eliminate water ponding.

Conduit Markings and Counter Flashing

Once the insulation was complete, we marked the location of all the inside conduit lines on the insulation. This helped us not damage the conduit lines as we mechanically fastened the insulation to the roof deck.

Next, we installed counter flashing around the perimeter of all skylights, edges, and expansion joints. This is to prevent the interruption of the PVC roofing membrane, allowing a monolithic roofing system.

Clean-Up Time

Upon completion of the new roofing assembly, we used a large magnet to pick up any loose screws or metal shards. We then used forced air to gather and bag up any remaining debris. Everything was then removed from the project site – including trash chutes, ladders, and safety rails.


Inspections come next, by both the roofing manufacturer and Building Department Inspector. The roofing manufacturer checks that the system was installed per their specifications. The Building Department Inspector makes sure we are compliant with all local codes. Once both inspections were complete, we closed out the building permit. Then we could give the Building Owner their manufacturer warranty.


We hope you’ve enjoyed this behind the scenes look into our process of replacing a commercial roof. If you have any questions about replacing your commercial roof, please give us a call today. We will set up a free roof consultation and go over options with you.



Quality Commercial Roof ReplacementVanguard roofing truck in front of commercial roof replacement job

When its time to replace your commercial or industrial roof, trust Vanguard Roofing of White Plains, NY.

Let Vanguard Roofing’s experienced professionals help you choose the best option for your commercial or industrial roof replacement.

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