Natural Oak Wood Flooring Grade
Natural oak wood is one of the most selected wood species for hard wood flooring and engineering wood flooring due to its natural beauty in grain pattern and versatility. It is one of the most distinctive woods which has elegant appearance and a timelessness style that is well liked for architecture designers and consumers. However, as much as it is known, there are actually various of wood flooring grading that is associated with the design and appearance of natural oak flooring.
This article aims to outline the most common grades that is used across the flooring industry. The ABCDE grading system ranks the oak wood from cleanest to most rustic appearance styles.
Wood Flooring Grading Appearance Criteria
Below are the hard wood flooring surface grading criteria chart which is used to assess the grade of hard wood surface appearance. The same grading system is also used for engineering wood flooring, solid wood flooring, veneer stone polymer composition (V-SPC) floorings and etc.
Example of A / B Grade Oak Wood Flooring
Flooring with A/B wood grading are also referred as the Prime grade or 1 BIZ depending on the manufacturer or suppliers of the flooring. The prime grade has the cleanest grade has it only consists parquets in the mixed grade of A and B.
The main distinct features in A/B grade parquets are:
A Grade: Without sapwood and has minimal knots and the overall color variation are minimal.
B Grade: Allows for few small holes and minimal sapwood.
The A / B grade woods has a harmonic natural appearance.
Example of C / D Grade Oak Wood Flooring
The C/D grade hardwood flooring are also referred as the Classic Grade or Natural Grade. In comparison with A/B grade, the C/D grade parquets will display more characters as more knots, sapwood and other wood features appears.
The main distinct features for C / D grade parquets are:
C Grade: Display live knots with less than 40mm allowed. Has worm hole with less than 20mm allowed. Has minor crack and discoloration.
D Grade: Display live knows with less than 60mm allowed. Has more worm holes and allowance for crack and embarks.
Example of C / D / E Grade Oak Wood Flooring
CD/E Grade woods are also referred as the Country Grade, Rustic grade or Tavern Grade woods. Different manufacturers or suppliers will provide other names according to their style.
The CD / E Grade features parquets with mix of C / D / and E Grades. The E Grade parquets has significantly more wood features has much of the criteria has no limits, such as for the number of knots and pin holes. The E grade wood can sometimes have knots up to 100mm and cracks up to 300mm in the center of the plank.
Renovation with E Grade / Country Grade Hardwood Flooring
