Marquart Concrete Products is a provider of retaining walls, landscaping products, brick masonry, concrete masonry, stone products, masonry products, fireplaces and concrete products. It offers products from such companies as Allan Block, Keystone Retaining Wall Systems, KINGS-wall, KASTLE-wall, Manitou Stone, Acme Brick Company, Cloud Ceramics, Pine Hall Brick Company, Sioux City Brick & Tile, Yankee Hill Brick, J&N Stone, Owens Corning, ProSoco, Alsey and Vestal. The company offers well covers and personalized landscaping rocks, concrete pavers, boulders, exterior stone veneers, granite countertops, glass block, sealants, adhesives, wall finishes, insulation and a variety of water repellents. Marquart Concrete Products operates locations in Clear Lake, Grand Junction, Marshalltown and Waterloo, Iowa.