TPO Roofing

TPO Roofing
Virtus TPO roofing
Virtus Roof TPO

TPO is a single-ply membrane. It has a white reflective surface and comes in rolls ten feet in width. The extended roll width greatly reduces the amount of seams on a roof compared to other membrane products, thus eliminating the number of potential leakage points. Each seam is heat welded. Typically a TPO membrane can be installed over a recovery or insulation board that has been glued or screwed to the roof deck. Depending on the thickness of the TPO membrane selected, a manufacturer's warranty can be as high as twenty years.

There are typically two different methods to install TPO.

  1. The most common installation process uses plates and fasteners to fasten the TPO to an underlayment. These plates and fasteners are covered with the overlap from the next sheet of membrane. The seams are then heat welded together. This is considered an industry standard in most areas. High wind can cause the membrane to flap and wrinkle with time, and in extreme high winds, the membrane can rip and possibly leak.
  2. The other method of installation is "fully-adhered." This is the method we as a company recommend. Instead of using plates and fasteners, we make sure there is a bondable surface properly attached to the roof deck where the membrane is to be installed. The TPO membrane is then glued to the sub-surface of the roof. The seams are heat welded after the membrane is in place, forming a roof that is fully adhered to the subsurface below. This keeps wind from getting under the membrane and allowing it to flap and cause potential damage.

In re-roofing TPO applications, an existing roof may not have to be torn off. Recovery or insulation board may be screwed over the existing roof to smooth out rough areas. Once the process of smoothing is complete, the new TPO membrane may be installed over the smooth surface. By eliminating the time and cost of removing the existing roof, the total job cost of the new roof is reduced and waste is not added to your local landfill. Waste reduction qualifies TPO as a green roofing product.