Rock Wool Manufacturing Company™ was founded in 1943 to manufacture residential blowing wool insulation. In the early 1950’s ... we expanded into the industrial insulation market producing mineral wool boards and insulating cements. Rock Wool Manufacturing Company™ continued to grow with the industrial market and moved into high temperature pipe insulation fabrication in 1988. To this day Rock Wool Manufacturing Company™ stays committed in growing to meet the needs of the high temperature insulation market, whether they are an industrial, commercial, or marine application. read more