It’s a PVC layer and, albeit a more costly item than Metal Roofing Sheets TPO, we accept it conveys more prominent long haul esteem and watertight insurance; A TPO system will run you more money over the roof’s lifetime. There are several reasons for this.
Prefabrication of a Duro-Last system for the roof saves time and labor during installation. PVC will weather conditions better on the roof in all environments and conditions, enduring longer prior to waiting be supplanted. It opposes oily café exhaust too as different synthetics that can harm TPO and different films.
Assuming fixes or augmentations are required, the new Duro-Last layer will be viable with the current rooftop, regardless of how old, and the fixes will be secure.
TPO systems last a long time
They are manufactured in varying thicknesses with a layer of reinforcement scrim—an industrial-fabric mesh—in the middle, like all modern single-ply membranes.
TPO systems are able to withstand impacts, punctures, and tears thanks to this composition of the membrane. It can also be treated to prevent mold growth.
Formulas that vary widely
Between manufacturers, TPO formulations can vary significantly. This is in part because early attempts to fix cracking and other roof degradation were made through trial and error, and some formulations still change today.
If, for instance, your TPO roof requires patching or must accommodate a new roof penetration in the future, this could be a problem. The new TPO layer may not be totally viable with the old – regardless of whether from a similar producer – and may not weld safely.
Even though TPO membranes are highly reflective, numerous independent studies in recent years have demonstrated that they perform poorly in environments with consistently high temperatures. In the summer, rooftops in Florida and other southern states can remain scorching for days or even weeks.
It has been demonstrated that the ongoing extreme heat weakens TPO membranes and shortens the lifespan of the roof system.
Lack of effective welding during installation due to TPO’s relatively small temperature window is another disadvantage of its formulation. Once appropriately introduced, it handles cold and snow well. However, if you need a roof installed during the winter, the cold may prevent efficient membrane welding.
TPO systems are not a good choice for restaurants or other establishments that leave grease or oily residue on their roofs because the membrane will absorb oils and eventually deteriorate. In fact, damage caused by oil, grease, and other materials is not covered by some TPO manufacturer warranties.
