We purchased granite, undermount sink,and backsplash from Colonial 4 years ago. After 4 years of normal household use, the undermount sink became disattached from the granite. Inspection revealed that the clips and adhesive simply failed. When we contacted Colonial, we were told there was only a one year warranty on their work and we would be charged $175 to repair this defect in workmanship. Are you kidding? Never again. Don't be fooled by low prices; low prices = garbage workmanship!