I just finished pouring my concrete pad and after it cured (6 days) I moved the tub on to it. The tub rocks slightly when empty at one corner where it is 3/8" off the ground. The other three corners are straight.
Here's the thing: the concrete pad is level as I checked it out a million ways to Sunday once it cured.
At its former site, the tub sat on EZ Pads that had really gotten out of shape over the past three years. I wonder if the spa didn't warp itself slightly over time.
I'm hoping to get water in it fairly soon once it passes its inspections. But I'm worried about the rocking.
The weight of the water (nearly 4,000 pounds of it) will push the tub down, but couldn't this damage the tub as the weight will depress the high corner and thus alter its shape somewhat?
