A number of associations have established guidelines for the grading of solid wood flooring. At this time there is no grading system that has been created for engineered flooring. With a wide variance between species of characteristics and types of wood flooring there are no standard grades for all wood floors. Different associations deal with specific species and many manufacturers have there own proprietary grades.
It will be important for you to understand what variations are allowed within a sample you are choosing from and what the effect will be over a larger area. Grading will include percentage variations in colour, size of knots, and board length minimums. The grading is based on the appearance of the floor. It is not a measure of the structural quality. That should be the same regardless of grade.
Probably the most common species of wood flooring is oak. Standard grading includes clear, select, #1 common and #2 common. What follows is a description of what you can expect at the different grade levels
Clear Grade The wood in this grade is very uniform in colour. There will not be any dark streaks or knots. Any character marks will be very small. Visually there will not be any breaks in the floor, it will be very consistent. The average board length will be in excess of 3.75 ft. Pin knots allowed. When the wood is being chosen for use with with a mid to darker stain they will often use select since any variations will be disguised.
Select Grade presents with more colour variation than clear grade does. More character marks that include very small knots will be visible. The average board length will still be greater than 3.25 ft. When you see a large area of the floor it will be less uniform from piece to piece yet quite consistent on a wide scale. No stains, checks or splits allowed.
#1 Common provides pieces with much more shade variance since all colour variations are allowed. Pieces will have sound knots no bigger than 3/8" wide and dark mineral streaks. Average board length is 2.5 ft. with a minimum of 10". The combination of the shorter boards and the increased variation will give you a more casual rustic appearance. No splits, holes or voids allowed.
#2 Common Common is the most rustic. Colour will vary widely including some very dark ones. All characteristics of the species is allowed. Knot holes, worm holes, checks, splits, and other imperfections are filled and finished. The minimum board length is 10".
Visit our showroom in Calgary at 6229 Centre St. SW. See how selecting the correct grade can give you the look you want within your budget. In addition to having Calgary's best selection of quality hardwood floors, Fashion Flooring will also professionally install your new floor.
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