How do you get a hot tub on your roof?
Considering this, can my roof support a hot tub?
To safely install a roof deck, the roof needs to be able to support about 55 pounds of weight per square foot in general. For instance, if you plan on installing something heavy like a planter or a hot tub, the deck and roof may require additional load-bearing capacity.
Simply so, does a hot tub need to be under a roof?
Putting a hot tub under a roof. You can put that hot tub on your porch, but beware if the floor of porch is wood, the water WILL affect it over time. (Or opt for imitation wood replacements.) Since you are building now, be sure that there will be a place for water to drain off to.
First step, choose where to place your spa. You must be sure that wherever you intend to put your inflatable hot tub, indoors or outside, is strong enough to support its weight. This means you probably shouldn't set it up on your wooden deck, but a flat spot in your yard or a concrete patio would work well.