Harbert climbed five spots to 95 after being ranked 100 last year. The ranking is determined by annual volume, largest job, number of employees and average square footage, according to Marcy McKee, a Harbert spokeswoman.
Harbert Roofing is an applicator of single-ply, built-up, composition, metal and wood shingle roofs. The company also installs gutters and downspouts, McKee said.