Flooring Grading and Sizes

This list gives a detailed overview of our engineered hardwood flooring grades & sizes. Arrow Wood produces a wide range of engineered hardwood flooring. Our customers can select Grade A to D for their hardwood flooring. We also offer a quarter sawn grade, which gives the wood a clean look and texture that could be mistaken with laminate.

Grading rules have two specific purposes. The first is to address aspects of strength and serviceability when flooring is to be laid in structural applications such as over joists. The second aspect is to determine the character (overall appearance) present in a floor through the sorting of boards depending on the features present.

Grading by visual means is simply a sorting process based on the size and number of features present in the boards. Boards with fewer and smaller features are sorted into one grade while those with more frequent and larger features would be sorted into another grade.


Oak Wood Flooring Grades & Sizes
engineered hardwood flooring grades & sizes

Other Wood Flooring Grades & Sizes
other spieces sizes

The grading process is rapid and generally relies on quick visual assessment where graders must assess the size and extent of a feature without relying on measurement. Due to this some inaccuracy in grading can occur that may result in a limited number of boards that are outside grade limits. The sanding of a floor can also increase the size of some features or cause features to appear that were not present prior to sanding. Consequently, some boards in a finished floor may not meet the specified grade description.

Grading does not cover where boards will be laid in the floor. As such it is a reasonable expectation that the installer, when laying the floor, will provide a relatively even distribution of colour and feature throughout the floor. Similarly it can be expected that board lengths will be relatively evenly distributed in the floor and that groups of short boards or board ends will not be frequently clustered together. To some degree board length will influence this.


hardwood lumber gradingHardwood Lumber Grading

The essential meaning and use of it.
Wood, as a product from nature, comes with different appearances regarding to eyes or knots. Wood around the world has different grading rules, USA, Europe, and Asia have their own markers to specify how wood can be sort regarding to defects like eyes and sap wood. From a QF system or a comsel look to a quite regular A to D grading, we grade our wood by the Asian standard of an: A/B/C/D grading. The grading weight the presence of eyes and defects. There is no grading on color differences or sapwood.


D-Grade: In basic, the grading that can be called, rustic. In this grade one will find heavy eyes, some cracks, sap wood and colour differences that will give this wood that alive look of an castle or cottage style idea.

C-Grade: Is a mild version of the D-grade. D and C hardwood lumber grading will come most of the time together to give a mild appearance to the D-grade.

B-Grade: Less eyes, a more delicate look. Maximum 4 eyes per board and with an average not over 4cm. B-grade hardwood lumber grading comes many times together with the A-grading.

A-Grade: The hardwood lumber grading with a minimum of eyes and defects. Although eyes are allowed not more than 2 per board with an average size of 4 cm. In this A-grade, one will find boards with also zero eyes or knots.

Quarter sawn: This grading is more a way of how wood is produced to give you that specific look of straight or near straight grains. Since it is quite difficult to harvest quarter sawn wood in big width like 18cm and up. Arrow Wood makes artificial top layers that will give you that quarter sawn look in wide boards. Eyes will not be present as defined in A-D grade. In this type you will find eyes more like color spots within the grains of the wood.

From left to right: D-Grade, C-Grade, B-Grade, A-Grade, Quarter-Sawn

wood grading

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