The NHLA rules were designed to provide the furniture industry a mathematically measurable method to grade lumber for its amount of clear, defect free wood. Hardwood grades are based on the size and number of clear pieces that can be obtained from a board when it is cut up to be used to make a product. Standard Grades of Hardwood Lumber Grade Trade Name Min. Area of Clear Cuttings Required First & Seconds FAS 83-1/3% FAS 1-Face F1F 83-1/3% Select SEL 83-1/3% No. Each grade has its own particular characteristics and appearance. Especially pertaining to Oak hardwood flooring, the 3 most commonly used grades are: Select, #1 Common, and #2 Common, which is also known as “Rustic” grade, or “Builder's” grade. Common Grades The finish grade is defined as a board with a fine appearance and tight knots. Premium grade is similar to the finish grade but encompasses boards with larger knots. Standard grade is used mainly for construction where a less finished board is acceptable. Industrial grade is the lowest grade. High: Some of the most expensive wood floors are made of exotic woods such as Brazilian walnut, tigerwood, mahogany and cypress. Costs tally $8 to $14 per square foot on average, with installation costs running around $4 to $8 per square foot.
The standard grades of hardwood lumber are: Grade Trade Name Min. board length Firsts and Seconds FAS 8' FAS One Face F1F 8' Select SEL 6' No. 1 Common 1C 4'
Top 5 Brands for Solid Hardwood Flooring 01 of 05. Bruce. Bruce. Best for quick availability and returnability. 02 of 05. Carlisle. Carlisle. Best for plank sizes. 03 of 05. Lumber Liquidators House Brands. Lumber Liquidators. 04 of 05. Hearne Hardwoods. Hearne Hardwoods. The Woods Company. The Woods Company. Best for reclaimed solid wood flooring.
There are four possible hardwood lumber grades. Hardwood Lumber Classification and Grading FAS (First and Second). This is the highest quality grade. Select — No. 1 Common. Select — No. 2 Common. Select — No. 3 Common.
Under the “Nordic Timber Grading Rules”, wood is sorted into three grades: A, B and C, where grade A is the highest quality, used for top-class joinery and exposed cladding. Grade A can be subdivided into grades A1–A4. Grade B is the most common grade in construction, while grade C is used in areas such as packaging.
Grade C waste wood is treated waste wood and should be used as biomass fuel at Waste Incineration Directive (WID) compliant facilities and is not therefore suitable for U4 – Burning as fuel in a small appliance.
2 Lumber. No. 2 lumber is the most common grade for framing. Lumber of this grade contains few defects, but knots are allowed of any quality as long as they are well spaced and do not exceed the size regulations.
The best hardwood floors are made with wood species that are readily available and — you guessed it — very hard. Oak flooring, maple flooring and cherry flooring are all good choices. Other species include bamboo (which is actually a grass), walnut, ash and mahogany.
Pine is pretty universally cheap though. Home depot where I am sells black spruce (2x4s etc) pine, poplar, rock maple and red oak (in order from cheapest to most expensive) and it's all ridiculously priced and warped because it's pre-dressed.
What is the difference between these two grades of lumber? #2 or better is the grade supplied by lumber companies. It meets code and there is no noticable difference for deck applications. Generally #1 "only" is used when specified by a structural engineer.
It is thus possible to find 2×4s that are four, eight, and twelve feet in length. In Canada and the United States, the standard lengths of lumber are 6, 8, 10, 12, 14, 16, 18, 20, 22 and 24 feet (1. 83, 2. 44, 3. 05, 3. 66, 4. 27, 4. 88, 5. 49, 6. 10, 6. 71 and 7. 32 meters).
SPF J Grade Lumber. These softwood species, Spruce, Pine, and Fir have the same characteristics. The SPF J Grade is a preferred and common brand in the Japan Market, and it is regarded as the highest grade of dimension lumber. The grade has minimal defects, and it is white and bright in appearance.
The real dimensions of light structural lumber and timber for framing homes: Dimensional Lumber: Nominal Size vs. Actual Size Two-by-four or 2 x 4 1 1/2 inches x 3 1/2 inches Two-by-six or 2 x 6 1 1/2 inches x 5 1/2 inches Two-by-eight or 2 x 8 1 1/2 inches x 7 1/4 inches Two-by-ten or 2 x 10 1 1/2 inches x 9 1/4 inches