When it comes to commercial roofing, modified bitumen and TPO are the systems you are most likely to encounter on a frequent basis. Where TPO has been around since the mid to late nineties, modified bitumen has a longer history which began in the seventies. Both systems are equally well suited for a dry and hot climate. And as is the case with most things in life, both options come with their own set of pros and cons.

The Modified Bitumen Roofing System

Since its development, modified bitumen has become the most commonly used system for commercial roofing due to its practicality and affordability. It also served as a replacement for the previous go to, asphalt roofing, which is far less flexible and comes with a much lower life expectancy.

In order to add resistance to UV lighting, blistering, cracking, and oxidation, manufacturers have begun to add other substances, like atactic polypropylene, or APP for short. However, not all manufacturers are equally trustworthy, and some have been discovered to be stingy with the APP as means of saving money. As a result, the roofing made from their mixture will is incapable of living up to the expectations of today’s property owners.Another way to increase resistance to UV lighting is to add a granulated surface to the roofing. This, however, will also impede people’s ability to detect leaks and cracks early on. Furthermore, roofing contractor in Menlo Park knows that the roofing system can be a fire hazard while it is being installed.That is why it is important that you only work with the licensed roofing experts as they have the skill and tools to handle all of the requirements.

TPO Flat Roofing System

TPO, which is short for thermoplastic polyolefin has been steadily gaining in popularity since its development in the nineties. There are three ways to install a TPO roofing system: mechanically, through ballast, or via adhesive. This system has also made a name for itself for its durability in the face of grease and chemical spills, as well as its tear UV ray resistance. Additionally, the singly-ply membrane that makes all of this possible, is also fully recyclable. Even the insulation comes free of plasticizers. This is a huge benefit for all property owners, who are environmentally conscious.

Another reason why the TPO system appeals to commercial building owners is that it can be applied over bitumen roofing or even metal roofing as long as it is still secured properly. A lot of money and time can be saved this way. Patching TPO roofing is also simple since the materials can be reheated to fix potential tears and leaks.