Beacon Roofing Supply, a company that sells residential and non-residential roofing products, completed the acquisition of General Siding Supply, a provider of building supplies including siding, windows, and doors to Midwest contractors. Financial terms were not disclosed. “This acquisition deepens our complementary building product offering and adds branch locations that expand our branch network in key markets. The Spanheimer family’s business has a long-standing reputation as siding specialists with unparalleled technical knowledge and service reliability. We are proud to have them join Team Beacon,” Bill Sarvis, Beacon Regional Vice President.