Thanks to the process in our autoclave, many types of timber and panels have been tested and awarded reaction to fire classification B-s1,d0, in accordance with the European standard EN 13501.
| Type of wood | Density | Min. thickness | Ventilated cavity | Reaction to fire class |
| ThermoWood® Spruce | 314-434 | 15-42 mm | 40 mm | B-s1,d0 |
| ThermoWood® Ash | 590-680 | 15-42 mm | 40 mm | B-s1,d0 |
| ThermoWood® Pine | 450-500 | 15-42 mm | 40 mm | B-s1,d0 |
| ThermoWood® Ayous | 269-374 | 15-42 mm | 40 mm | B-s1,d0 |
| ThermoWood® Ayous | 305-470 | 15 mm | 40 mm | B-s2,d0 /B-s3,d0 |
| ThermoWood® Fraké | 410-730 | 15-42 mm | 40 mm | B-s1,d0 |
| ThermoWood® Poplar | 350-500 | 15-42 mm | 40 mm | B-s2,d0 |
With a ventilated or non-ventilated air gap between product and substrate or with no air gap
According to classification: EN 13501-1:2018 and EN 13501-2:2020
According to test: EN 13823
Colour coating with Sherwin Williams
| Type of wood | Density | Min. thickness | Ventilated cavity | Reaction to fire class |
| Solid wood | 355-536 | 19 mm | 40 mm | B-s1,d0 |
| ThermoWood® | 450-500 | 19 mm | 40 mm | B-s2,d0 |
Sherwin Williams SC1420 + EG1570 on wood treated with Burnblock®, certified B-s1,d0
Pre greying with Masquelack
| Type of wood | Density | Min. thickness | Ventilated cavity | Reaction to fire class |
| Solid wood | 355-536 | 19 mm | 40 mm | B-s1,d0 |
| ThermoWood® | 450-500 | 19 mm | 40 mm | B-s2,d0 |
Masquelack on wood treated with Burnblock®, certified B-s1,d0
Wood protector met SIOO:X
| Type of wood | Density | Min. thickness | Ventilated cavity | Reaction to fire class |
| Solid wood | 355-536 | 19 mm | 40 mm | B-s1,d0 |
| ThermoWood® | 450-500 | 19 mm | 40 mm | B-s2,d0 |
Sioo:X Wood Protector + Sioo:X Surface Protector on Burnblock® B,s1-d0 certified wood
Except: ThermoWood® poplar (B-s2,d0)
