When is it advisable to install a membrane waterproof barrier in a shower installation?

Installing a membrane waterproof barrier in a shower installation is crucial for preventing water damage and ensuring the longevity of the structure. The correct timing for the installation of this barrier is before the drain base is covered. This is essential because the waterproof barrier plays a vital role in directing any water that penetrates the tiles and grout toward the drain, thus preventing it from seeping into the wall or floor structure and causing issues such as mold, mildew, or structural rotting.

If the waterproof barrier is installed after the drain base is covered, it could lead to a situation where water accumulates under the flooring without an effective escape route, increasing the likelihood of damage over time. This proactive approach to waterproofing ensures that all areas that might retain moisture are adequately protected right from the start, thus safeguarding the integrity of the installation.