Timber Is Graded According To Appearance
Timber goes through a series of procedures to convert it into an end-user product. One of the steps is to design the timber based on its appearance, making high use of its color, grain, texture and natural features. The finished product will then used for construction particularly as timber flooring or decking.
The color of the timber is naturally the first consideration in selecting timber based on its appearance. Timber come in many colors, which is a primary factor in categorizing various species. Many belong to a basic color groups, which are browns, blonds, yellows and reds. These colors are usually found in common heartwood species. There are many variations like different shades, which are graded and labeled accordingly. To do this, close attention is given to a piece’s workmanship. Grading timber allows you to have pieces that look pretty much the same in color rather than have different shades for your floors. In addition, grading can be difficult since the surface color of timber can alter during its serviceable stage. Sunlight slightly reduces dark colors and transforms blonds to yellows. When timber is exposed to natural elements, it can age into a silvery grey. In designing the color of the timber, applying timber finishes should be able to properly manage the color changes of the wood.
Another factor that affects the appearance of your timber is the grain, which pertains to the size, direction and arrangement of the fibers of the wood. Various tree species have varying grain patterns, which are simplified as either straight, spiral, sloping, irregular, interlocking and wavy. Care is applied in cutting the timber to enhance the natural grain of the wood. Timber can be sawn in many ways like quarter or back sawing. Along with grain is the texture of the wood, whether it is smooth or rough and even or not. The texture is affected by the arrangement and size of the wood cells. Upon close scrutiny, these are highly perceptible, which can affect how the wood is categorized.
Trees produce unique timber pieces even those from the same species. A tree will have its unique natural features, which can be seen in the tree’s branching and any irregularities therein. These refer to features like gum veins, knots, and pin holes. It is possible actually to restrict or manage these natural features by specifying the grade of the timber. This is easily accomplished with hardwoods with various choices set by AS 2796.2, which are the medium or high features and the select grade. In Cypress, AS 1810 sets it as either Grade 1 or 2. By grading the timber, the number of knots and imperfections as well as the type and spacing are now objectively identified.
Sawing the timber is also another important element in the appearance of the timber. Logs need to be sewn for practical reasons, one of which is the ease in transport and use. There are various saw methods that can add or enhance the grain pattern of the wood. For instance, the growth rings can appear in the broad face of the wood through back sawing and shows on the narrow face with quarter sawing. If possible, it is still best to ask your suppliers regarding what you can expect from the various timber species.
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