An existing shower can often be converted into a steam shower, but the enclosure must be properly sealed, waterproofed, and designed to contain steam. While installing a steam generator is a great way to get a similar experience to a home sauna but installing the generator alone is not enough to transform your shower. The walls, ceiling, glass door, ventilation, and electrical connections must all be suitable for the installation. If you're planning a custom steam shower, assessing your existing shower first can help determine whether a conversion is practical or a more extensive renovation is necessary.