Pre-Pitch™ is a unique, stay in place screeding tool designed for use underneath shower pan liners. The first product to be installed, Pre-Pitch creates the proper sub floor pitch (1/4 in per 12 in run) needed to direct water flow towards the weep holes that are an integral part of shower floor drains. By having a pitch under the pan liner, water that passes through the mud bed is now directed to the weep holes instead of being trapped between the mud bed and the liner where many mold and mildew related issues originate. The plastic Pre-Pitch sticks have holes in their vertical web which help to act as reinforcement and are easily cut with a hacksaw, PVC cutter or dry diamond blade. For wood subloors, Pre-Pitch can be screwed or nailed in place. For concrete subfloors, use two-sided tape. The subfloor must be level, sound and properly prepared prior to installing Pre-Pitch.