Durability classes
Also known as resistance or durability, it is usually determined in accordance with the DIN-EN 350-2 standard. This tests the resistance to insects, fungi and pests, which increase the rotting of the wood. Classification is from class 1 (very durable) to class 5 (not durable). Class 1 woods (such as cumaru or teak) have a life expectancy of over 25 years under moderate climatic conditions. Class 3 woods (such as Bangkirai) have a life expectancy of up to 15 years. Class 5 woods (such as beech) have a life expectancy of less than five years (see: Comparison of wood species ).
DURABILITY CLASSES WOOD
Here you will find an overview of what the resistance class says about the service life of wood used outdoors:
|
Class |
Service life |
Wood species |
|
1 = very durable |
at least 25 years |
Teak, Cumaru |
|
1-2 = very durable |
at least 20 years |
Jatoba, Garapa |
|
2 = permanent |
15 to 25 years |
Bongossi, Bangkirai |
|
3 = moderately durable |
10 to 15 years |
Siberian larch, Douglas fir |
|
4 = not very durable |
5 to 10 years |
Spruce |
|
5 = not permanent |
less than 5 years |
Maple, birch, beech |
6,50 €
Cumaru wood tiles, FSC 100%
Price: 72 € per m2, resistance class: 1
Advantages: ✓ best durability ✓ particularly robust and scratch-resistant
Disadvantages: ✗ Partly rough surface
Tip:Sand tiles after initial weathering.
from 5,45 €
Teak decking boards, FSC 100%
Price from: € 130 per m2, resistance class: 1
Advantages: ✓ Best durability and dimensional stability ✓ Lowest risk of cracking and splintering
Disadvantages: ✗ Relatively expensive ✗ Not very long planks
Tip: Lay decking boards together.
from 11,85 €
Cumaru decking boards, FSC 100%
Price from: € 70 per m2, resistance class: 1
Advantages: ✓ best durability ✓ particularly robust and scratch-resistant
Disadvantages: ✗ Partly rough surface ✗ High force development
Tip: Sand the boards after the first weathering.
