Dihydrogen Monoxide Facts. 1  is also known as hydric acid, and is the major component of acid rain. 2  contributes to the Greenhouse Effect. 3  may cause severe burns. 4  contributes to the erosion of our natural landscape. 5  accelerates corrosion and rusting of many metals.
Thermoplastic Polyolefin (TPO) is the fastest growing segment in the commercial roofing industry. To take advantage of this recent popularity, a growing number of companies have begun offering TPO single-ply membranes. Unfortunately, not all TPO is created equally.
First and foremost is the thickness of the TPO material. Thickness will determine durability and performance, but it will also determine cost. For an economy TPO roof that is moderately effective, .045-inch TPO roofing is the economy class. The middle-of-the-road thickness for TPO roofing is .060 inches while the premium quality is .080 inches thick.