During the templating process they will go over any needed seams with you. Depending on the layout; slab and or sheet size we can offer homeowners to decide on seam placement. Some layouts or materials don't allow another option on placement of a seam. Our fabricators will keep the seams to a minimum, while maximizing the material being used. Each seam is filled with a color matching seam adhesive, put together by special tooling. Each color of Quartz and Granite come in a variety of slab sizes. Laminates are typically all a common sheet size. Although some commercial colors or wood grains are smaller sheets.