GRADE COUNTRY
Flooring grade “COUNTRY” is an embodiment of natural beauty of Siberian birch. The natural diversity of the material’s structure, its “rawness” create a feeling of comfort and warmth, a feeling of closeness to the nature. Flooring can be made with a facet on two long edges, with or without bevels.
SPECIFICATIONS
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Description of defect as per GOST 2140-81 |
Grade |
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Select |
Nature |
Country |
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Intergrown knots, light and dark |
Not allowed |
Allowed up to 20mm in diameter |
Allowed up to 30mm in diameter |
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Black knots and particially intergrown, light and dark |
Not allowed |
Allowed up to 10mm in diameter |
Allowed up to 20mm in diameter |
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Heartwood
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Not allowed |
Allowed in a form of strips of light tint up to 40% from plank surface |
No limits |
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Face shake (among other things in watermarks and heartwood) |
Not allowed |
Not allowed |
Allowed with width of no more than 1mm and with length no more than 50mm |
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Cracks in knots |
Not allowed |
Allowed with width of no more than 1mm and with length no more than 20mm |
Allowed with width of no more than 1mm and with length no more than 30mm |
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Curly grain |
Not allowed |
Allowed |
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Pith |
Not allowed |
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Inbark
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Not allowed |
Allowed with width of no more than 3mm |
Allowed with width of no more than 5mm |
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Discoloration |
Not allowed |
Allowed |
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Mineral deposits |
Allowed single strips with width no more than 1mm |
Allowed |
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Watermark |
Not allowed |
Allowed in a form of thin strips |
Allowed |
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Worm holes |
Not allowed |
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Wane |
Not allowed |
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Processing defects(flakes, chips, scores, tear, flay marks) |
Not allowed |
Allowed single up to 0,5mm in depth |
Allowed single up to 0,5mm in depth |
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Burning |
Not allowed |
Allowed |
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Hit and miss areas |
Not allowed |
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