Jimmy cleaned our kitchen/dining nook/bathroom porcelain tile floor. He had the right equipment for the job. We very quickly felt confident that he would do the job right. The 1'x1' tile has 1/4" wide buff colored grout joint. The heavily traveled areas were very dark. They now look like new, with all joints in the approx. 300 sf area looking the same. He also gave us guidance on maintaining the floor so the joints stay clean for as long as possible. Jimmy is knowledgeable, hard-working and very straight-forward. His office support is also excellent. We wouldn't hesitate to recommend him or use the other services he provides.