The following information in reproduced exactly as it is printed in the book “NLGA (National Lumber Grades Authority) Standard Grading Rules for Canadian. lumber grading rules. The NLGA rule is approved and enforced by the Canadian Lumber. Standards Accreditation Board (CLSAB) and by the American Lumber. 1 Jan The NLGA Interpretations incorporate the National Grading Rule entirety. For other than the NGR portions of the NLGA Rules, NLGA.

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Pieces of Panelling, Drop Siding and Ceiling run to pattern may be partially surfaced or hollow or scratched back.

Transportation Association of Canada. Organisation for Economic Co-operation and Development.

NLGA Standard Grading Rules For Canadian Lumber – Atlantic WoodWORKS!

Some pieces may exhibit a few minor characteristics which do not detract from their high appearance and quality. Pieces rulex graded from the resawn side. National Electrical Manufacturers Association. International Organization for Standardization. Canadian Council of Independent Laboratories. American Iron and Steel Institute. Standards of accredited organizations or other agencies. This grade may include stock too thin to dress in standard sizes.


International Slurry Surfacing Association. Material supplied with this finish shall in all ways adhere to the grades, sizes and patterns as specified, except that it shall be graded from the textured face. Society for Protective Coatings.


Geosynthetic Institute Test Methods and Standards. California Department of Transportation. American Society for Testing and Materials. Hamilton Hydro-Electric System Specifications. Society of Automotive Engineers.

NLGA Grading Rules

Glued-Up Bevel Siding End-glued, edge-glued or a combination of end and edge-glued Bevel Siding is rulew to be interchangeable in use value with one-piece stock of nga comparable grade. Muncipal Engineers Association of Ontario. Canadian Acts and Regulations. Institute of Transportation Engineers. This portion of the thin edge may contain characteristics that will be covered when laid and will provide a suitable backing. National Concrete Masonry Association. End-glued, edge-glued or a combination of end and edge-glued Finish, Panelling, Ceiling and Drop Siding is intended to be interchangeable in use value with one-piece stock of the comparable grade.

Some pieces may contain: Illuminating Engineering Society of North America. Insulating Cable Engineers Association. Code of Federal Regulations. International Concrete Repair Institute.


The text uses terminology that is not commonly used in the UK market, however to maintain the accuracy of the information we have not made any changes. Goods and Services Identification Number. National Institute of Standards and Technology. The characteristics of the grade are n,ga same as for one-piece stock.

The thick edge permits minor characteristics that do not detract from the appearance of the piece in use. Western Red Cedar Finish is customarily shipped kiln dried and surfaced four sides.

NLGA Grading Rules

Western Red Cedar Bevel Siding is produced by resawing kiln dried surfaced lumber on a bevel to produce two pieces thicker on one edge than the other and is most commonly used as exterior siding, giving a horizontal shadow line effect.

British Board of Agrement.

Full Length Bundling F.