How Heavy is a Hot Tub?

Hot tubs can serve a number of different purposes. Some people use their hot tubs to relax and unwind. Other people use hot tubs as a social centre. And then there are other people who use hot tubs as a place for exercise or physical mending. But choosing a proper location for all these activities is incredibly important. Being able to bear the weight of a hot tub full of water and people is essential. Asking how heavy is a hot tub will allow you to ensure you have the proper base for it to sit upon. To help you with this endeavour, we provide this information.

How Heavy Is A Hot Tub?

There’s no single answer to this question. There are as many answers as there are hot tubs on the market. However, if you don’t have access to the product spec sheet it is possible to estimate the weight based on the number of people that the hot tub holds and what it’s made of. Modern inflatable hot tubs are incredibly light and have a negligible effect on its final weight – relatively speaking. More traditional hot tubs with acrylic or fibreglass shells are much heavier. A two to three person hot tub will weigh about 500 to 600 pounds. Four to five person hot tubs will weigh about 750 pounds while the largest hot tubs can weigh a thousand pounds or more.

All that being said, the weight of the water will be the vast bulk of the total weight of a full hot tub. A gallon of water weighs more than eight pounds. In even the smallest of hot tubs that hold 200 gallons the weight of the water alone will be over 1600 pounds. Add a couple of people as well as the weight of the hot tub itself and you’re looking at over 2500 pounds. And while this may not make a lot of difference if your hot tub is placed on a concrete pad on the ground, if you’re installing it on a deck or another less stable surface, it’s important to compare the weight of the full hot tub with what the structure will bear.

Hot Tub Bases

As mentioned in the introduction, choosing a proper location for your hot tub is important. Actually, what’s most important is the base that the hot tub is set on. You can’t just set a hot tub on your lawn or on a wobbly deck without creating a potentially dangerous situation. A stable and level base is imperative. Without it you risk the hot tub cracking or failing altogether.

Concrete

Concrete pads are one of the most popular hot tub bases because they can be properly leveled as they’re being poured. Concrete pavers can also be used, but they require a bit more skill to get them leveled.

Gravel

You can also use a bed of gravel to sit your hot tub on. Gravel is popular because it doesn’t require concrete pouring experience and it also provides natural drainage. You’ll need to dig about six inches below ground before laying down the gravel to keep it from shifting and spreading out.

Prefabricated Hot Tub Pads

Hot tub pads are made of.high density plastic and remove a lot of the labour required with concrete or gravel. They’re lightweight and are simply fit together on leveled ground to create the base.

Decking

Decking is a very popular location for hot tubs, but if they are more than a foot off the ground they need to be properly reinforced to withstand the weight. This is when it’s most important to know how heavy a hot tub is. A structural engineer can help you calculate the amount of weight your deck can hold.

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