For over fifty years, The Glenrock Company has been recognized as the premier specialty products construction supplier in the ... Midwest. Our customer focus is concentrated on professional Sealant, Waterproofing, and Restoration Contractors. We have three branch operations in Chicago, Milwaukee, and Indianapolis. The Glenrock Company represents the construction industry’s premium vendors. Glenrock has grown consistently throughout our years in business by providing “clear, concise, construction advice.” Let our knowledgeable staff, superior service, and the best manufacturers in the industry help lower your construction costs. read more