The easiest, fastest way to build a curbless, level-access shower. The rotating plate allows you to orient the drain in the best position, including centered on the shower base. Installing this shower former and waterproofing typically takes one day. With a Tuff Form8 shower former you avoid all the difficulty and risk of notching, lowering, or altering the joists. This shower base is 7/8" thick at the edges. Cover this base with tile or stone (from 1/" to 1" thick); this base can also be covered with commercial, weldable vinyl flooring. To build larger showers use TruePitch extensions, appopriate mortar products or install formers side-by-side. Install Tuff Form8 formers on any type of joists, on subfloor, or on concrete. to complete your shower installation you will need and ARC waterproofing kit and a drain assembly for tile (chose a drain for vinyl only if you instal weldable vinyl flooring. Tile that is 2" x 2" or smaller conform to the pitched contours of this shower base; for tile larger thant 2" x 2", make valley cuts so that the tile lays properly on all pre-pitched surfaces. When installed properly on joists, all Tuff Form8 formers bases support 800 lbs. or more. This product is covered by the manufacturer's limited lifetime warranty.