Exterior Plywood Grades Explained at Exterior

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Exterior Plywood Grades Explained. Even within the different plywood grades, youโ€™ll likely find a wide range in the number of repairs or defects. The primary difference between one grade and another is the number of knot holes and voids you'll find in the layers of veneer.

Columbia Forest Products Publishes New Hardwood Plywood
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Manufacturers shave thin wood layers, called veneers, from logs. Br veneer grade plywood is similar to b grade, but the knots of this material donโ€™t typically exceed 7 to 8mm in diameter. The first letter represents the face veneer grade, while the second letter represents the back veneer grade.

Columbia Forest Products Publishes New Hardwood Plywood

This compound is written out as ab, ac, and so on. Br veneer grade of plywood is also usually used for thinner sheets of plywood as it is used for specialist applications. A, b, c and d. There are four main types of plywood veneer grades.