If you have decided to go for an outdoor sauna, a firm foundation is an essential thing to consider. Think of a suitable area in your garden, this will help you to decide on the size of the sauna. Please note that base should be a little bigger than the sauna itself. Therefore, much thought should always go into properly preparing the foundation for your outdoor sauna. If your foundation is not suitable, there’s always the chance for cracks and gaps to appear. It must be even and sturdy. Here we will discuss a possible base structure for our saunas with specific examples.