Tile Redi. No need for a costly mortar bed, the company says. Its one piece shower pan will do the trick. Made from rigid polyurethane, the pan is leak proof, mold free, and comes with a lifetime guarantee. It will accept tile and stone, is pre-pitched at a 1/4 inch, and comes with a variety of drainage trim for thin tile or thick stone. Ten standard sizes are available including an ADA-compliant version and a curbless unit. www.tileredi.com.