Durability is key here: The combination of regular water use and exposure to the elements can create a mess if materials aren’t carefully considered. Some designers suggest using materials that are able to withstand storms — treated woods, stones and other natural materials are long-lasting and timeless. Salvaged materials may be chosen for their affordability, uniqueness and durability. Look for fixtures that will stand up to natural elements in your area, such as salt, sand, sun or snow.
You’ll also need to waterproof the existing outdoor portion of your house to prevent any rot or mildew. Some people tile and waterproof only the lower half of shower walls. If you’re comfortable with this, it can save some money, but there’s risk involved. Be sure to carefully seal the area where the shower meets the house.