The pad under the spa
Denver Concrete
Every hot tub needs something flat, level and rated to hold it, and that is a poured slab far more often than people expect. A filled six-person spa with people in it runs to several thousand pounds concentrated over a small footprint, which is more than an old patio or a bed of paving slabs laid on soil will carry for long. Denver Concrete pours driveways, patios, foundations and flatwork across the Front Range, and hot tub pads are a listed part of what they do rather than something they take on reluctantly. They also handle the surrounding work that tends to come with a spa - walkways and steps so the route out there is safe in February, pergola footings if the plan is to cover it, and mudjacking when an existing slab has already moved.
