Careful planning is needed when deciding to put in an outdoor hot tub.  You need to think about structural supports, understand electrical requirements, know local building codes, and find a licensed professional according to fiberondecking.com.  

WHAT TO LOOK FOR 

Is it a “hot tub” or a “spa” you’re wanting?  While these terms are often used interchangeably, they are different.  A “spa” has circulating jets.  Regardless, experts recommend choosing your hot tub or spa before making any structural or design changes on your deck.   

COST

You’ll probably end up spending around $2,000 for a two-person spa.  Spas that seat 4-8 can cost anywhere from $2,500-$10,000.  Another cost you’ll want to factor in is the delivery and installation fee.  It can be quite challenging. Although there are a lot of cool features that come with spas, experts say the first item you should look for is something called “full-foam” insulation.  This polyurethane foam fills the space between the spa’s outer cabinet and inner shell.  The purpose is to reduce heat loss and noise levels but also increase the stability of the unit.  

 

CALCULATING STRUCTURAL SUPPORT

A flat, level surface, such as a concrete slab, is the perfect location for a hot tub or spa. If you're building a new deck, experts say the slab should be formed and poured at the same time as your concrete footings.  

 

When calculating the load to determine how much structural support you’ll need, add up the tub’s dry weight, plus the water capacity, plus the number of recommended occupants, multiplied by an average weight per person.

 

To size the joists and beams accurately for such a heavy load, most builders will consult a structural engineer.

 

LOCATION

When choosing a location on your deck, there must be enough room around the hot tub/spa for the cover lift to function and air to circulate.  

 

Some builders say putting a spa near the corner of the house tends to accentuate the wind.  

 

Think about the sun and locations of trees and don’t forget about the neighbors.  You might want to consider a privacy screen.  

 

Position the spa near a door or well-lit path so you can make a quick dash to go inside on chilly nights.  

 

POWER

You’ll need a licensed electrical contractor to put in an electrical source to power your spa.  Your builder or you will need to decide who’s responsible for hiring the contractors, getting the permits, and overseeing the electrical work.  

 

SAFETY CONSIDERATIONS

So guests can sit on the rim and swing around into the water more easily, many builders recommend installing the hot tub so that its edge is 17-24 inches above the decking.   For spas located on top of a deck, stairs are in order.

 

SERVICE

Finally, there must be access to the motor for servicing.  

 

 

A hot tub/spa can be a great addition to your new outdoor space. To learn more about hot tubs, visit the Association of Pool and Spa Professionals website.