Mixed texture, mainly straight, selected to assure uniformity in colour.
Mixed texture, straight and flamed, with colour even contrasting.
Mixed texture, wavy grain with colour even contrasting, possible presence of small healthy knots. No defects.
Mixed texture, straight and flamed, with colour even contrasting. Possible presence of small healthy knots in some planks.
Mixed texture, wavy grain with colour even contrasting. Presence of knots of different dimensions however filled.
Country grade: mixed texture wavy grain with frequent even big knots. Sapwood traces may be present.
The Country grade according to the regulations UNI EN 13489 ( appendix B for the definition of the Free category) is to be consider ed a free category with the following features:
|Knots (healty, adherent, bad)||A|
|Deviation of fibres||A|
|Variation in colour||A|
|Traces of strip||NA|
|Biologic alteration||NA except of insects holes (spotted)|
|Non visible parts||
All mentioned features are allowed without limits in quantity if they don't compromise the performance of the woodfloor or the structure of the floor itself (ungluing, strong warps, etc.)
A: allowed | NA: not allowed
The colours of the woods mainly depend on the wood specie. Each wood colour varies when exposed to light for a period of time (oxidation) . Each wood species has its own colour and texture. Each wood specie and supply show a different look depending on the area of origin. (Taken from UNI-EN 13226 regulation sect.5).
Iroko, Doussiè, Wenge: before and after the sanding, traces of concretions and silicon powders may show up: their colour varies from a whitish to a lemon yellow colour. After oxidation, in most cases they acquire the wood specie colour. Anyway, because the presence of this silicon powders is part of the nature of the wood, it can not be considered as defect and it can not be used for any kind of complain about the quality of the wood and the product.
Teak: early colour differences during oxidation dim sensibly, until they become uniform in the definitive colour. Doussiè: during oxidation colour differences of some elements may increase in comparison with the whole lot.
Possible successive purchases of the same wood floor may have different shades compared to the original floor. This is due to the oxidation process that affects the wood after some time. Specifically in case of coloured finishes a change in colour may be evident; white finishes tend to turn yellow.