At Buitengewoon, we believe luxury is not only what you see – it is what you cannot.

Beneath the timber, beneath the waterline, beneath the warmth of the fire – there is structure. And structure determines whether something lasts…

This is why we build every Buitengewoon wood-fired hot tub using vinylester resin technology rather than standard polyester resin.

Because true craftsmanship lives in the unseen layers.

The Hidden Science Behind a Better Soak

A wood-fired hot tub lives in a demanding environment:

– Constant exposure to water
– Elevated temperatures
– Natural movement from heating and cooling cycles
– Water treatment systems and minerals
– Over time, inferior materials begin to show their limits.

Many manufacturers use polyester resin because it is cheaper and easier to process. But polyester absorbs more water and is more prone to blistering, cracking and long-term degradation – especially in hot environments.

We chose differently.

What Makes Vinylester Superior?

Exceptional Water Resistance

Vinylester resin has significantly lower water absorption compared to polyester.

This dramatically reduces the risk of:
– Osmosis
– Blistering
– Delamination
– Structural fatigue

For a hot tub that remains filled and heated for extended periods, this is critical.

Built for Heat

– Wood-fired tubs naturally cycle through temperature changes.
– Vinylester maintains structural integrity at elevated temperatures far better than polyester.
– It resists softening and retains strength even during repeated heating cycles.
– That means fewer micro-cracks. Less stress. More longevity.

Greater Structural Strength

Vinylester offers:
– Higher tensile strength
– Greater flexibility before failure
– Improved impact resistance

In practical terms: your tub handles transport, installation, and full water loads without compromising its shell integrity.

Built for Enduring Performance

Even without aggressive chemical systems, hot water alone is demanding over time. Vinylester is widely used in demanding marine environments for its strength and resistance to prolonged water exposure. We apply that same principle to every Buitengewoon tub.

Why Most Brands Still Use Polyester

– Polyester resin is cheaper and easier to manufacture with.
– Vinylester costs more and requires tighter process control.
– We choose vinylester because our goal is simple:

To build something that will outlast trends, seasons and shortcuts.

Built Quietly. Built Properly.

You may never see the resin system inside your tub.

But you will feel the difference over time:
– No blistering.
– No hidden structural fatigue.
– No premature ageing.

Just enduring performance – wrapped in timber, warmed by fire.

That is the Buitengewoon way.

Considering a Wood-Fired Hot Tub?

If you’re exploring long-term investment pieces rather than seasonal purchases, we invite you to explore our full collection.

Every Buitengewoon tub is built with vinylester resin as standard – never as an upgrade.

Explore Our Wood-Fired Hot Tubs →