A Quick Guide to Hot Tub Foam
Foam has many uses inside the home, but it's also popular for outdoor applications. More people are buying hot tubs for their gardens and sourcing foam to refresh and maintain them. A hot tub is an expensive investment, so you'll want to keep it in the best possible condition.
Foam hot tub covers and lids
One of the most popular uses is hot tub covers and lids. Hot tubs are fantastic in summer, when their temperature is easier to regulate, but during the UK's colder spells it becomes harder, and expensive, to keep them warm if poorly insulated. Closed-cell polyethylene foam is excellent within hot tub lids: one of the most popular insulation foams, it can be used with a standard lid (inside, when closed) or as an alternative cover.
Seating and headrest foam
Many high-end hot tubs include foam seating and headrests, and however good the product, these high-contact points will need maintaining and replacing over time. Headrests can be replaced with water-resistant foams such as Plastazote, which is easily shaped, doesn't absorb water and has excellent chemical resistance – important given the water is often treated. Refitting depends on your tub's construction, so contact the manufacturer first.
Foam for temporary hot tubs
For those without a permanent fixed hot tub, foam still plays a part. Temporary tubs such as inflatable spas have boomed, and despite their temporary status are a considerable investment. High-density polyurethane foam sheets and Plastazote are recommended as a base to protect them from sharp scratches and pressure damage.
Base support and insulation
Foam support matters for fixed hot tubs too. We recommend high-density polyurethane or Plastazote to surround or complete the base. The benefits range from cutting vibration noise (particularly on a deck) to reducing heat loss through the base and sides. For related outdoor water uses, see our guide to foam for poolsides.
For all your hot tub foam needs, eFoam is here to help. As a manufacturer and supplier of specialist foams, we can advise on insulation, protection or in-tub comfort, and our cut to size tool helps estimate costs and requirements. For guidance, please contact us.
Frequently asked questions
What foam insulates a hot tub?
Closed-cell polyethylene foam is an excellent material for hot tub lids and covers. It can be used inside a standard lid when closed, or as an alternative cover, helping keep the water warm and reducing the expense of heating a poorly insulated tub.
What foam is best for hot tub seats and headrests?
Water-resistant foams such as Plastazote, which is easily shaped, doesn't absorb water and has excellent chemical resistance – important given hot tub water is regularly treated. Refitting depends on your tub's construction, so check with the manufacturer first.
Does foam help under a hot tub?
Yes. High-density polyurethane or Plastazote around or under the base can cut vibration noise (especially on a deck), reduce heat loss through the base and sides, and protect the tub from scratches and pressure damage.
