What is the minimum water depth required when testing shower liners?

The minimum water depth required when testing shower liners is two inches. This specific measurement is established to ensure that the shower liner can effectively demonstrate its ability to hold water without any leaks. Testing at this depth allows for an adequate assessment of the liner's integrity and its performance as a barrier against water, which is essential to prevent water damage and maintain a hygienic environment in the bathroom. Using a water depth of two inches strikes a balance between effectively testing the entire surface area of the liner while ensuring that any potential leaks can be detected readily and efficiently.

This depth is typical in plumbing standards to provide a reliable testing scenario, unlike shallower depths, which may not adequately evaluate the liner's capability to contain water under normal usage conditions.