Wood finish maintenance - Use and maintenance - Isbjørn Hot Tubs

Maintenance hot tub wood finish

Plastic Hot Tub or not, for many Tub users this Hot Tub must also maintain a natural appearance and fit into the landscape. The Tub should continue to look like a wooden Tub, even if the Tub has a plastic inner tub. The Isbjørn hot tub was created from this starting point, a sturdy wooden Tub with a wide wooden rim on the outside, comfortable and practical on the inside due to its shape and choice of materials. The Isbjørn Hot Tub is therefore finished with Thermowood.

What is thermowood?

ThermoWood is thermally treated pine wood from Scandinavian forests. By modifying the wood with heat and steam (without the use of chemicals), it is transformed into a durable and stable product, comparable to wood from tropical forests. ThermoWood also has an insulation capacity that is 23% higher than that of untreated wood.

Due to the modification method, the moisture absorption capacity of the wood decreases considerably and the equilibrium moisture content is lowered. The depth of the warm brown color depends on the intensity of the heat treatment. The higher the temperature and the longer it is held, the darker the color. Since the wood has a lower UV resistance after the modification, a beautiful silver-grey discoloration is also obtained more quickly. Sustainability is a fact.

In summary, the thermal treatment of pinewood has a major impact on swelling and shrinkage, color and biological durability.

Maintenance thermowood

All our Hot Tubs are finished with a beautiful thermowood wood finish. Although thermowood is quite durable due to the thermal treatment it has undergone, it takes on a silvery gray color (similar to Red Cedar) over time.

Although not necessary, we always recommend treating the thermowood once a year with Vesting wax oil. This makes the wood water-repellent and keeps its beautiful dark brown color for a longer period of time. However, only treat the exterior finish of your Hot Tub with this oil, never the protective grille that is in the water (models with internal heaters).

What customers say

R. van der Jagt

Our new hot tub has been in place for a few months now and we are very satisfied. This started with delivery and installation. With us he had to go over the roof. This was not a problem, because the hot tub was delivered neatly packaged on a pallet. Once on the ground it was just a matter of removing the foil and tilting it and it was standing. Installing the heater and filter was also a matter of attaching hoses, turning and firing. We have already spent wonderful hours in it. Both in the hot summer and now in the cold under the starry sky.

Bas and Agnes

I would like to thank you very much for thinking along and delivering the hot tub. The finish and appearance in our garden is more than expected! For now, the neighbors can watch (later we'll blind this corner), but everyone is jealous! Since the delivery last Saturday there hasn't been a day that we haven't enjoyed the tub. Especially with this warm weather, daily heating is not necessary, which results in a refreshing bath every day. We are therefore very pleased that we were able to submit all our questions and wishes to Isbjørn and Woodmex before purchasing this eye-catcher.


Very satisfied with our Isbjorn hot tub. The large heater heats the tub quickly. In the beginning, be careful not to heat too hard so that it gets too hot. All in all, it is wonderful to enjoy and also super cozy with the whole family. Well advised and nice to see the manufacture.

Elles Kommer

Finally started installing the hot tub today. We couldn't wait to sit in it for a while. And thanks for the warm hats.

Isbjorn Review Fig Isbjorn Review Fig Isbjorn Review Fig Isbjorn Review Fig
Isbjorn Logo E1644397984167 1

Since February 2019, ISBJØRN HOT TUBS has been part of the Woodmex Group, which has been located in Wormerveer (NH) for many years. Thanks to the greatly improved quality, improved final checks and our own delivery service, you can now find our hot tubs in several European countries.