Site-built shower pans

摘要

Field-fabricated shower pans (or "receptors," as the code refers to them) have been acknowledged by plumbing codes at least as far back as the 1955 Uniform Plumbing Code. Built in place from various parts and pieces, site-built shower pans allow for an endless variety of shower-floor arrangements, including curbless, roll-in showers. While the 1955 code permitted site-built pans only in special cases where the installation of a premade pan was demonstrably impractical, such pans are now common and have their own provision in section P2709 of the IRC. A major perk of site-built shower pans is that they allow the installation of custom tile, stone, or other aggregate floor surfaces. The downside of these finishes is that they aren't themselves waterproof.