The Atlanta-based company is a subsidiary of CRH plc, a publicly traded international group of diversified building materials businesses,[2][3] and has approximately 18,000 employees at 1,200 locations, as of March 2018.

[8] Brands and subsidiaries include: Tom Hill was named Oldcastle Materials' president in 1991, and began serving as CEO in early 2000.

[33] In October 2016, Oldcastle Materials announced plans to build a new asphalt plant and distribution center at Port San Antonio's East Kelly Railport.

[46][47] Oldcastle Materials purchased McMinn's Asphalt in 2007, and subsequently made the company part of its Pennsy Supply subsidiary.

[18][56] Spokane Rock Products had approximately 120 employees when Oldcastle Materials purchased the company in March 2018.

[60] Oldcastle Materials was the fourth largest crushed stone producer in the nation in 2012, according to the USGS.