Since 2004, Corval Group has completed tank repair, like expansion and on-going maintenance. In 2009, Corval Group performed alterations to CertanTeed’s #1 Hot Asphalt Tank at their facility. The scope of work included scaffolding, stripping of the tank, new man door, new drip ring, addition of nozzles, blast and paint, and insulate with jacketing. All work was compliant with API 653 standards. Also in 2009, Corval Group was contracted as the general to install equipment, fume collection ducting, process piping, insulation, and perform tie ins to the existing systems. More recently, Corval has been worked on the CertainTeed asphalt unloading and storage project, which completed in May of 2014. There were 25 Corval tradespeople working safely and efficiently to make up for lost time due to the tough winter conditions. Since completion, CertainTeed can now offload, store and process close to 1 million gallons of flux asphalt, which is used in the manufacturing of their roofing shingles.