My first exposure to low-slope roofing was back in 1999 as CertainTeed completed its acquisition of GS Roofing, a company boasting a national footprint of steep- and low-slope roofing products. The procurement of GS Roofing’s business launched CertainTeed, now a member of the Saint-Gobain family of brands, from a regional shingle manufacturer to a national player in the roofing industry.
Thankfully for many of us, much of the "low-slope talent" that enabled GS to succeed brought their expertise to CertainTeed to educate the rest of us. For some historical context, at that time, self-adhered membrane applications were still several years off from being on the market; the primary products used included hot-mop, built-up roofing, and cold-applied, torch-modified bitumen membranes.