Resistance against damage
Each wood species has a different degree of hardness which means that it’s more or less resilient to damage.
Very hard woods such as Canadian maple (1450 JHN in the Janka's scale), merbau (1925 JHN in the Janka's scale), jatoba (2760 JHN in the Janka's scale), doussie (1810 JHN in the Janka's scale), tali (2930 JHN in the Janka's scale), badi (1630 JHN in the Janka's scale) and wenge (1630 JHN in the Janka's scale) are the most durable and so recommended for high-traffic areas, children’s playrooms and places where pets are kept.
Softer woods which are less resistant to damage should be used in rooms of average traffic, e.g. houses, apartments.
The floor of medium hardness (e.g. birch 1260 JHN in the Janka's scale) or European maple (1000 JHN in the Janka's scale)) will look particularly appealing in spaces of very little traffic, e.g. bedrooms or households with few members.
Resistance to change effected by sunshine
In the course of time and as a result of sunshine (particularly,
UV radiation), wood products begin to change color. Though it is
a completely natural process not all wood species react in the same way. Some woods change color fairly quicly, others need years for that.
That’s why, when choosing a floor one should pay attention to the way the sunshine penetrates the interior.
The wood species that easily change color should not be used in rooms of intense sun exposure, because the places particularly exposed will become discoloured to a greater degree than those shaded (e.g. under furniture, behind a door, under carpets).
The floors that are particularly sensitive to discoloration are those made of exotic woods and so it is recommended that once the flooring has been installed, all of it gets the same amount of sun exposure.
| species | color change in sunlight |
| American cherry | visible (getting darker) |
| Canadian maple | moderate |
| American walnut | moderate |
| ash | moderate |
| ash mocca | visible (getting ligher) |
| badi | visible (getting darker) |
| beech | moderate |
| birch | moderate |
| doussie | visible (getting darker) |
| European maple | moderate |
| European walnut | moderate |
| jatoba | visible (getting darker) |
| kambala / irokko | visible (getting darker) |
| merbau | visible (getting darker) |
| oak | moderate |
| oak cooca | visible (getting ligher) |
| red oak | moderate |
| sapelle | moderate |
| steamed beech | moderate |
| tali | moderate |
| wenge | visible (getting darker) |