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Do built-in tubs with showers require waterproof joints between the tub and the wall?

  1. True

  2. False

The correct answer is: False

The correct answer is that built-in tubs with showers do require waterproof joints between the tub and the wall. This is critical for preventing water damage and mold growth, which can occur if water seeps through gaps between the tub and the wall. In any installation where water is present, particularly in a shower setup, proper sealing is essential. The joint must be waterproof to ensure that water does not infiltrate the wall cavity. The use of waterproof caulking or flashing is typically recommended to create a watertight seal. Allowing water to penetrate these areas can lead to significant issues over time, including structural damage and health hazards due to mold. Understanding this concept is crucial for maintaining the integrity of any bathroom installation, reinforcing why waterproofing joints are a necessary component for built-in tubs with showers.