Choosing the Right Shell Materials for Your Spa or Hot Tub

Choosing the Right Shell Materials for Your Spa or Hot Tub

The material you choose for your spa and hot tub shell is most important because it can’t be replaced later should it fail to meet your expectations. You only have one chance to get it right.

Here’s a guide to choosing the right shell materials for your spa or hot tub.

The Basics

The material you choose for your spa’s shell should be comfortable to touch and sit on while providing the insulation needed to keep the water warm and use energy efficiently. Also, it must be strong enough to tolerate years of use while keeping the shine that helps your hot tub retain its clean, fresh look.

The Most-Used Materials for Hot Tub Shells

A few of the most-used materials for hot tub shells are as follows:

  • Composite acrylics
  • Vinyl liners
  • Continuous cast acrylic (CCA)

Composite Acrylics

Gelcoat and OAS plastic are durable materials but they are quite susceptible to fading and aging. The fading of a hot tub shell can make it look years older than it really is.

Vinyl Liners

Those in the know warn against buying any hot tub shell that’s made only of vinyl liner. This type of liner is most commonly found in soft-sided hot tubs and spas. They are usually more affordable but, because it’s a softer material, vinyl liners are much more easily damaged and often require repair in a few short years.

Vinyl liners are susceptible to damage caused by incorrect chemical balances and long-term exposure to the sun and discolouration caused by improper care isn’t covered by warranty. The maintenance and repair of a vinyl liner could end up costing you more in the long run than if you’d purchased a more expensive liner in the first place.

Continuous Cast Acrylic (CCA)

CCA is an extremely strong material that can withstand extreme temperature changes, is highly resistant to cracking due to a lot of use and stress and is, by far the best choice for a hot tub shell. CCA is a non-porous material, which makes it easy to clean and has UV inhibitors that prevent colours from fading so that it shines like new for years.

Under the Shell

Be sure that you have proper insulation underneath the shell to keep the heat in the hot tub and save on energy costs.

An Investment in the Future

It makes no sense to spend less money on a shell that will require costly maintenance and repairs down the road. If you do your research and purchase carefully, you’ll have a hot tub shell that will last for generations.

For more information, contact a trusted hot tub dealer in your neighbourhood. They will be happy to help you make this important decision.


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