Thermo ash furniture for spas, saunas and wet areas.
Written by Andrius Misiunas, Founder & Commercial Director, WOODAIM.
What thermo ash is like
Thermo ash is ash that has been heat-treated in a controlled process, without chemicals.
The treatment makes it much more resistant to moisture and rot, and more stable when humidity changes. It also turns the wood warm brown all the way through.
Where it works in hospitality
Thermo ash works best in humid and wet areas:
- Spas
- Saunas
- Pool areas
- Changing rooms
- Covered terraces
Where it's not the right choice
Thermo ash is more brittle than untreated ash. It is not the right choice where a piece has to carry heavy loads. We use it where stability matters more than load, and design the joints for it.
What we make in thermo ash
We can make thermo ash benches, seating, shelving and other furniture for spas, saunas, pool areas, changing rooms and covered terraces, to your drawings, with joints designed for the material.
Sourcing
All the timber we buy is FSC-certified, and we hold FSC Chain of Custody certification (FSC-C190674), so the FSC claim can be stated on your invoice.
Oak and ash are the core of what we make. See our oak vs ash guide.
Frequently asked questions
What is thermo ash?
Thermo ash is ash heat-treated in a controlled process, without chemicals. It becomes much more resistant to moisture and rot, more stable when humidity changes, and warm brown all the way through.
Is thermo ash good for saunas and spas?
Yes. Because it is more resistant to moisture and more stable when humidity changes, thermo ash suits spas, saunas, pool areas, changing rooms and covered terraces.
Is thermo ash as strong as normal ash?
No. Thermo ash is more brittle than untreated ash, so we use it where stability matters more than load and design the joints for it.