Intro to V2T Roof System – Video Transcript


The purpose of this video is to introduce the V2T Roof System, talk briefly about how it differs from traditional roof systems, and compare it with its competitors. We will present some of the science involved in the system, the testing we have conducted, results that you can expect from the system, the types of applications that are most appropriate, and we’ll show you some examples of existing jobs. Finally, we’ll offer some next steps if you’re interested in using the system as a short term solution, recovery, or new construction. If after this video you have additional questions please submit an inquiry through and the team will connect you with the appropriate service, sales, or engineering team member.


So, what is the V2T Roof System?

The V2T Roof System is a combination of vents and air channels that work together to hold the roof membrane in place. Traditionally, roofs have used ballast, adhesives, or mechanical fasteners to adhere the membrane to the roof deck. Over time, the updraft from wind weakens the hold of the glues and screws, and eventually, the fasteners and membrane will need to be replaced. These traditional systems also take considerable labor and materials to adhere the full membrane to the substrate.

V2T works differently. As the wind moves across the top of a roof, it comes into contact with one of the patented V2T vents. Notice the curved upper and lower hemispheres? These curves force the wind into the narrow opening in the middle of the vent. And, because more wind is being pushed into a smaller space, the speed of the wind accelerates. A real world example would be how putting your thumb over the opening in a garden hose makes the stream of water shoot out farther and faster.

This is called the Venturi Effect and is one of two scientific principles V2T’s inventing engineers utilized to make this the most effective vented roof system on the market today. The other scientific principle at work is the Bernoulli Principle.

Looking back at our V2T vent, this upper hemisphere has slits in the bottom. When the wind passes through the middle of the vent, it creates a vacuum effect. The wind passing through pulls air from within the vent itself, which pulls the air from the legs, which pulls the air from the bottom, which pulls the air from under the membrane.

In a typical V2T installation, the vent is placed above the intersection of numerous air channels spread across the roof, but under the membrane. This vacuum, or negative pressure, essentially sucks the membrane down on the roof deck, and any updraft is offset by the increase in negative pressure from the curved domes. The pressure is always lower under the membrane than above it.

The stronger the wind blows, the tighter the roof holds.

And this is exactly why you don’t need all the ballast, screws, or glues. All you need is the one element that all the other systems are fighting against: the wind. 


V2T Savings

So, with the V2T roof system, because you do not have to adhere the full membrane, savings are considerable for both labor and materials. In fact, one vent can take the place of 7 buckets of adhesive, 1,000 screws, 24,000 lbs of ballast, or 4 foam kitsWhen it comes to labor, on roofs over 10,000 square feet, some contractors are finding considerable savings. In fact on some jobs, we are hearing of labor savings of over 40%.

Also, because it’s mostly a loose laid membrane, it’s easy to repair. You can identify the affected area, cut out a square, and weld in a new square. You don’t have to work against the adhesives or mechanical fasteners to remove damaged membrane sections. Easier installs, easier repairs, easier clean-up.


Contact Us

For more information on the V2T Roof System visit our website at If you have a specific job in mind, please complete the job evaluation form, and we will get back to you with more detailed feedback, including if your job is a good candidate for the V2T system.