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Declaration of Performance / CE marking
Thermoarena products have been assessed according to
a harmonized technical specification and performance is declared as follows:
Durability of thermally modified wood
The natural durability of a wood species is defined as its inherent resistance to wood-destroying fungi. Durability of Thermoarena products is tested by CATAS.COM
| Durability Class | Designation | Timber Life |
| 1 | Very Durable | 25 + Years |
| 2 | Durable | 15 – 25 Years |
| 3 | Moderately Durable | 10 – 15 Years |
| 4 | Slightly Durable | 5 – 10 Years |
| 5 | Not Durable | 0 – 5 Years |
