Impregnated products
DuraTree can also provide you with high quality treated wood and wood crafted products divided into different classes. For example, chemically treated timber is more durable and can better withstand the elements as well as insects and fungi. All classes are treated according to current norms DIN68800, NEN 2945 and EN351-2.
| Impregnated Class | Suitable for | Method |
| Class 1 | Construction and roofing | Submersion method |
| Class 2 | Roofing in damp places | Submersion method |
| Class 3 | Exterior construction without water contact | Vacuum pressure method |
| Class 4 | Exterior construction with water contact | Vacuum pressure method |
| Class 5 | Exterior construction with seawater contact | Vacuum pressure method |
