Robert McCall founded a joinery workshop on the Dundrum Road in Clough at this time, initially to service the needs of the contracting side of the business, but increasing demand from other contractors led to success and expansion to the extent that the joinery workshop became the primary focus of the company. In addition to finished timbers and specialist joinery products, the company began to supply a range of general building products. In the mid 70s the business expanded with the addition of the timber yard, joinery machine shop and 15,000 sq ft stores at Blackstaff Road on a greenfield site, where it has remained to the present day. At this time a new tile store was opened on the Castlewellan Road, where French's restaurant stands today. J&W McCall Supplies have been a family run business from the beginning, with Robert’s wife and both sons, Jim and William being actively involved in the company.