Inground Spas & Hot Tubs Construction

There are only a handful of leisure activities that can be more soothing than relaxing in the swirling, warm water of a hot tub.

Today’s pool environments allow homeowners to unwind their day with the relaxing and rejuvenating benefits of hydrotherapy using in-ground spas and hot tubs. Besides providing a calm and transformative effect, the visual appeal of a bubbly bath can turn your backyard into a dramatic landscape.

While a hot tub usually refers to an above-ground or portable water body, spas are built into the ground, mostly attached to a pool.

The expert pool building team at Premier Pools & Spas specializes in building all kinds of spa additions, ranging from in-ground gunite spas to standalone fiberglass and vinyl liner hot tubs. With over three decades of industry experience, we can skillfully create a dreamy opulence even in a small backyard.

The Building Process of In-ground Spas and Hot Tubs

The two basic categories of spas are the custom-built, in-ground variety, and the factory-manufactured structure.

Spas & Hot TubsHot Tubs Installation Process

Hot tubs are typically found in a round or square shape.

Hot Tub Shells: Hot tubs have hard acrylic, thermoplastic, fiberglass, or vinyl interior shells. The understructure, made of high-density polyurethane foam or fiberglass, determines the tub’s durability and overall strength. Surface material withstands the sanitizing chemicals and is smooth to touch.

Outer Cabinets: They are created from natural wood or man-made composite materials. The visible external cabinet hides all the plumbing lines and utility components. They require regular maintenance as they fade in prolonged sunlight.

Hydrotherapy Jets Offer:

  • Relaxing sensations
  • Unique massaging actions
  • Speed, direction, and intensity-adjustments

Accessories and Features Available:

  • Lounge seating with footwells
  • Grab rails
  • Lighting for safety

In-ground Spas Installation Process

An in-ground spa can also be elevated or raised from the pool level. You can build it while constructing a new pool or add a spa later.

Phase 1. Digging. As per the approved design, we dig the site for the spa.

Phase 2. Steel Installation. We set up reinforced steel bars or a rebar framework.

Phase 3. Plumbing and Wiring. Plumbing lines and electrical fixtures are installed.

Phase 4. Gunite. The gunite mixture is pneumatically applied in the excavated hole.

Phase 5. Curing. The material is allowed to harden into a tough pool shell.

Phase 6. Finish. Interior finish is applied from among the plenty of options – from traditional white plaster to colored pebble or quartz aggregate.

Phase 7. Jets and embellishments. Hydrotherapy jets and additional features like LED lighting are installed along with tile, coping, and pool exterior.

Spas & Hot Tubs

Advantages of In-ground Spas and Hot Tubs

Water circuit therapy or hot tub hydrotherapy is not just a luxurious pool trend, as it offers scientifically backed health benefits.

Improved Sleep Quality

Adequate quality sleep is necessary to stay healthy, and for this, soaking in hot water before going to bed can be a relaxing routine that you can adopt. Hot tubs can feature between 30 and 100 jets that help you get a relaxing hydromassage.

Removal of Toxins and Stress

Soaking for at least 20 minutes in warm water (spa or hot tub) elevates the body’s temperature and dilates the blood vessels, causing an improvement in circulation and release of internal chemical wastes. It also acts as a stress buster.

Proactive Revitalization

With built-in features for an in-ground spa, such as mood lighting, music, and waterfall, you can create the right pool ambiance for relaxation and revitalize your body’s suppleness.

Rejuvenation and Recovery

The buoyancy in a hot tub and warm hydrotherapy jet massage can be exhilarating as it alleviates tension and soothes the overworked muscles. You can also speed up injury recovery with the energetic pumps in a hot tub.

Spa & Hot TubsSocializing and Reconnection

Hot tubs work wonders when socializing with your friends or having a cozy evening with your loved ones. Whether it is spending romantic dates with your partner or a gadget-free fun time with your kids, a spa can be your trusted ally.

Hot Tubs VS In-ground Spas

In-ground Spa with a Pool

  • Hearting the water is time-consuming
  • Scope for customization
  • Integrates with pool and landscape design
  • More expensive
  • Professional installation needed

Standalone Hot Tub

  • Higher energy-efficiency
  • Comes as a single unit
  • More hydrotherapy jets
  • Beautifies the backyard only if placed right
  • Easy and to operate and quick to install

Other Things to Consider When Buying In-ground Spas & Hot Tubs

Operational Costs

While hot tubs maintain a uniform temperature at all times, in-ground spas incur higher monthly bills as the water gets heated every time they are used. Winter maintenance can be quite a hassle, especially if you use custom designs.


A pool and spa combo do not offer much flexibility in terms of placement, which is not the case with a hot tub. Spa owners can place the hot tub right next to their back door for easy access on cold winter days.

Comfort and Convenience

Portable above-ground spas can be challenging to enter and exit, particularly for older adults or someone with disabilities. However, hot tubs offer ergonomic seating in a wide array of options.

Contact Premier Pools & Spas to Build Your Hot Tub or In-ground Spa and Pool Combo

As one of the top pool builders in the U.S. since 1988, Premier Pools & Spas focuses on giving your backyard pool ideas a realistic yet stunning form.

We hope that the information we have provided can help you make an informed decision about the type of spa suitable for your lifestyle. Please speak to us today to learn more about in-ground spas or visit our office in your location to get a free estimate.

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