How Thin Is 8 4 Lumber?

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This article will tell you how thick 8 4 lumber is, as well as the other dimensions you might need to know. This article will cover the different grades, allowed thicknesses, and miscuts. This information will be helpful for you in making your next construction project. You can also see what type of hardwood is available for your project. In general, hardwoods are about 1/16” to 1/8” thicker than standard lumber.

Dimensional lumber

What are dimensional lumber sizes? Dimensional lumber is softwood lumber that is two to five inches thick and four to twelve inches wide. It can be six to twenty-four feet long, and the nominal dimensions of each lumber species are listed in the Voluntary Product Standard PS 20-20 American Softwood Lumber Standard. For more information, read this guide to determining what size lumber you need. You can also find other measurements of lumber on the website of your local building materials retailer.

When purchasing lumber, it’s important to understand that there are several kinds of thicknesses. For example, a 2×4 board is two inches thick but only one half inch thick. The actual width and depth of a 2×4 board are one and a half inches and three and a half inches, respectively. A 2×10 board, on the other hand, is one and a half inches thick but three and a half inches thick.

There are many reasons why dimensional lumber is important for building construction. Using dimensional lumber means you can use it to construct a house and other structures. It is commonly used in the construction industry for framing. This makes it easy to work with and is ideal for DIY projects. Aside from being standardized and affordable, it is also highly durable. If you have a large building project on the horizon, dimensional lumber is an excellent choice.

Dimensional lumber is the most commonly used type of lumber. It is available in several different types, depending on your construction needs. The most popular type is 8 4 inches thick. A few inches thicker lumber is better than three and a half inches thick. The minimum dressed green lumber thickness is one eighth inch, while half an inch is considered rough green. You should always buy the proper thickness for the job. It is also important to check the moisture content of the lumber before purchasing.


There are several grade designations for eight-four lumber. The term “stress-graded” refers to the way in which the wood reacts to various conditions. For example, a lumber with a “paint grade” rating is more likely to last longer and resist rot than one without a “paint grade” label. A “grade” is based on the ASTM standards for determining a product’s mechanical properties, such as bending moment.

Firsts and Seconds, FAS-1F, and Sel are some of the grading names for eight-four lumber. Firsts and Seconds are the best grades for furniture, long clear moldings, and other products, and FAS-1F is for selects. FAS-1F lumber is the most common and commonly used in construction and is a good choice for most general-purpose applications. Those looking for longer-lasting, more durable products should select FAS-grade lumber.

Two sides of each board must meet the Minimum Requirement for that grade. Surface Measure refers to the area of each board in square feet. FAS-8-4 lumber must have two sides with at least 83 1/3 percent clear-face yield. A surface measure indicates how much clear wood must be present to achieve a given grade. During testing, a lumber grader can measure both sides of a piece to determine the percentage of the wood that must be removed.

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While it’s common to see an average thickness of one inch in eight-four lumber, there are some mills that cut four-four-inch-thick lumber in a way that assures it’s one-inch-thick. While this may sound like a small difference, it’s important to note that a softer wood can be more susceptible to rotting, reducing the yield. Generally speaking, 8-four-inch lumber is one-third to one-third of its nominal thickness.

Allowable thicknesses

When establishing grade, the NHLA requires 4/4 lumber to be at least one inch thick. This rule applies to both air-dried and green lumber. Many mills cut lumber at an average thickness of one inch, but this isn’t the industry standard. In practice, lumber that’s more than one-inch thick isn’t as good a choice because of the wide variation in the thickness of the resulting piece. Consequently, the yield is also lowered, so a higher allowable thickness is always preferable.

While kiln-dried lumber is surfaced on both sides before grading, planed lumber has a slightly greater allowance. The thickness of 4/4 surfaced lumber ranges from 13/16″ to 1-1/16″ and eight-four-inch-thick lumber is a bit thicker, measuring between one-and-a-half and three-fourths inches. Although hardwoods are mostly graded on the poor side, planed lumber is graded on the better side.

Hardwood lumber is sold by the board foot, which is equivalent to one inch thick by one foot long. Lumber thickness is generally expressed in quarters of an inch. Therefore, one-inch thick lumber is labeled as 4/4, while one-and-a-half inch thick lumber is designated as 6/4, and two-inch-thick lumber is labeled 8/4. This program automatically rounds up lumber thickness to the nearest 1/4″ if it is less than four-and-a-half inches thick.


If you have 8-foot lengths of lumber and are preparing them for framing, you might wonder if it is okay to make miscuts. These cuts do not change the grade of the lumber. However, the thickness of the lumber is uneven. When the thickness is more than a quarter inch, it is considered a miscut. There are also some exceptions to this rule. These can be accommodated in most projects.


To find out more about the grading of 8 4 lumber, consult the NHLA Rules Book. Typically, lumber has a surface of 3/ 4 inches by 11-1/4 inches. The nominal size is the length and width of the lumber, and it is sold in lineal and running feet. There is no restriction on the number of rings per inch, and open grain lumber has no thickness or ring limit. The NHLA Rules Book contains the details of lumber grading.

The maximum thickness for 8 4 lumber is 1.00 inches, regardless of whether it is air-dried or green. Most mills cut the lumber at an average of 1-1/16 inches to guarantee a 1.00-thick product. However, this average is often wider than nominal, which leads to greater variation. The result is that yield is reduced as the lumber is thicker. For this reason, one-eight-inch over nominal is not a standard.

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s written by Itamar Ben-Dor, who has 25 years of experience in renovations, carpentry, locks, creation, landscaping, painting, furniture construction, and furniture renovation, works with concrete, plumbing, door repair, and more.

Itamar Ben-Dor has been in the home improvement business for over 25 years. Itamar Ben-Dor is a jack of all trades. He's worked in the renovation field for years, doing everything from locksmithing to carpentry. He's a small repairs specialist. But his true passion lies in furniture construction and renovation - he loves seeing old pieces come back to life with some new woodwork or a fresh coat of paint.

He has taken courses on many topics in these fields at professional colleges in Israel. Over the years, Itamar has also become quite skilled in gardening, carpentry, and renovations. He's worked on projects of all sizes, from massive renovations to small repairs. No job is too big or too small for him!

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