What does Nlga mean on lumber?
National Lumber Grades Authority
CLA is the Canadian Lumbermen’s Association, and NLGA is the National Lumber Grades Authority.
What are the grades of pressure treated wood?
Pressure treated wood is sold with the lumber grades Premium, Select, Number 1, Number 2, and Number 3. The higher the grade, the fewer the defects—that is splits or knots. In general, you will want to choose Number 2 grade boards, or higher, for decks.
Is KD HT pressure treated?
The wood shown in this picture is a No 2 grade, KD-HT (Kiln-Dried, Heat Treated), S-P-F (Spruce-Pine-Fir). It has nothing to do with the wood being pressure treated (PT) at all. However, some KD-HT wood at your local lumber yard might have a tag on the end of the lumber that specifies PT.
What does Nlga mean?
The National Lumber Grades Authority (NLGA) is the organization responsible for the establishment, issuance, publication, amendment and interpretation of Canadian lumber grading rules and standards. NLGA is the only recognized rules writing body for lumber grades and standards in Canada.
How do you read lumber grades?
The most common grades and their clear-wood requirements are as follows:
- “Select” = at least 80% clear wood.
- “#1 Structural” = at least 75% clear wood;
- “#2 Structural” = at least 66% clear wood;
- “#3 Structural” (“stud” grade) = at least 50% clear wood;
- “Construction Grade” = at least 57% clear wood;
What is kd19 HT lumber?
kd19 means the lumber was redried to 19% as all pine framing lumber is dried to. Most likely it is a treated board, since most treated lumber is sold wet, some yards sell K.D.A.T. (Kiln Dried After Treatment). The kd19 is the customers assurance that it was dried to the proper level before it left the plant.
What does Prime KD-HT mean on lumber?
kiln dried and heat-treated
Answer: Western lumber mills and others are producing lumber showing a KD-HT mark, indicating the wood has been kiln dried and heat-treated. The mark indicates that the lumber has been heated to a core temperature of 56°C for a minimum of 30 minutes and is dried to a maximum moisture content of 19% or less.
What are the different grades of 2×4 lumber?
There are two primary grades of appearance framing: Finish and Select. Finish grade is higher quality than Select. Finish grading is only available in lumber from Douglass Firs and Hem-Firs. The grades are Supreme, Choice, and Quality.
Where can I find the NLGA standard grading rules for Canadian lumber?
A spiral-bound book of the full NLGA Standard Grading Rules For Canadian Lumber may be purchased from NLGA through our publication sales section of the website. PDF files of sections of the Standard Grading Rules for Canadian Lumber are listed below:
What does NLGA stand for?
The National Lumber Grades Authority (NLGA) is the organization responsible for the establishment, issuance, publication, amendment and interpretation of Canadian lumber grading rules and standards. NLGA is the only recognized rules writing body for lumber grades and standards in Canada.
Are there any free PDF files of the NLGA special product standards?
PDF files of sections of the Standard Grading Rules for Canadian Lumber are listed below: We are pleased to provide free PDFs of the NLGA Special Product Standards for your personal reference. These files are protected by copyright.