How big of a grout joint should be expected for tile/stone?
For non-rectified tiles, 1/8″ is the smallest grout joint we recommend for ceramic/porcelain tile. Some tiles require a 3/16″ grout joint and for stone that has a straight edge, 1/8’’ to 1/16″ grout joint is recommended. If the stone is tumbled, than your grout joint will be larger. Many factors determine the size of a grout joint, therefore it is important to discuss this with your installer.