Growing up in New England as the proverbial red haired, Boston Irish Catholic kid with my red hair now gone, I have called Texas Home, having been in the Houston Area since 1990. Installing my first roof in 1977, I've seen many changes in not just roofing, but the construction industry in general. Back then, shingles still had an organic, or paper mat saturated with asphalt, but shortly after that fiberglass mat shingles began showing up in the market with the early ones being thin and not very flexible.
In the commercial market, built up roof membranes, referred to by the acronym BUR, have been in use in the U.S. for more than 100 years and have in the past been the go to roofing system. These roof systems are commonly referred to as "tar and gravel" roofs.
Next on the market coming from Europe initially, were Modified Bitumen Roofs installed in 1978 with a lifespan of 8-15 Years.
TPO came on the market about 1986 but the product has been in a constant state of flux with manufacturers formula changes as a result of premature aging and failure from sun and heat.
SPF Foam Roofing and Silicone Coatings are actually old school, not the new kid on the block and have been in use for over 50 years, with some roofs that age and still working. Having been around since the mid 1960's still have only about 2% of the market. They have been used extensively by A&M University having over 7 million square feet installed drastically reducing energy bills and on other major projects like the Superdome.
Standing solidly behind my work, I have always offered my clients the very best roofing system for their needs. I constantly researching products, systems and techniques. I have found that the best approach to a re-roof, or restoration is a coating over a sound surface with all damp insulation removed. It saves 40% or more on installation, cuts down on energy bills, can be done in a fraction of the time as a re-roof with virtually no noise or mess. It can even be installed if you currently have 2 roofs in place without issues.