Prepare the base for a hot tub by pouring a concrete pad. Excavate the ground, build the concrete form and add reinforcement steel before pouring. Allow sufficient time for the concrete to cure before installing the new hot tub.
- Excavate and level
Use a shovel to remove the top four inches of dirt and sod from the area where you plan to install the hot tub. Avoid disturbing deeper layers of soil for improved stability. Use a long straight board and carpenter's level to ensure the excavated area is level.
- Set the form
Build a concrete form using two-by-four lumber. The form should be approximately 1 foot larger in both directions than the base of the hot tub. Set the form in place and test for square by measuring the diagonals. Adjust the form until the diagonals are equal. Test for level and make any necessary adjustments. Use wooden stakes to hold the form in place. Add 1 inch of fill sand to the bottom of the form and level the sand.
- Add reinforcement
Add concrete reinforcement wire or steel to the prepared area.
- Pour the concrete
Order the appropriate amount of ready-mix concrete. Pour the concrete into the forms and level to the top, using a two-by-four that is slightly longer than the forms to smooth the surface
- Allow to cure
Allow the concrete to cure a minimum of 24 hours before setting the hot tub.