The decade of the late 1950s to the late 1960s witnessed the expansion of Temple Industries with the addition of a plywood plant, a particle-board plant, a fiberboard plant, and the building of an ultra-modern sawmill facility. A new $4,000,000 fiberboard plant began production in January, 1958, employing about 110 new workers. It would produce exterior wall sheathing, acoustical tile, roof insulation, and other soft-board products from pine sawmill residues and low-grade hardwoods.
In 1968, the company announced it was expanding the fiberboard plant producing three new products: mineral ceiling tile, medium density siding, and hardboard. An additional 100 new jobs would be created. The $7,000,000 costs of expansion would result in an almost doubling of annual production.