J grade comes from the softwood species. SPF (Spruce-Pine-Fir) lumber is found in the Canadian forest but there is a lot of demand in the Japanese market. This lumbar is called SPF because The characteristics of these woods are similar.
This grade comes in white and bright in appearance and this grade has minimal defects. Because of this, it is in great demand around the world.
| Species | SPF (Spruce-Pine-Fir) |
| Moisture Content | Kiln Dried |
| Origin | Canada |
| Common Length | 6′ to 20′ |
| Common Width | 4′, 6′, 8′, 10′ and 12′ |
| Thickness | 1 “& 2” (19mm, 38mm) |
| Grade | J-Grade |
J Grade Lumber Uses
Due to the excellent properties of this grade, it is in demand for many applications worldwide. Due to its lightweight, it is the main use for construction for support and many other residential, commercial, agricultural, and industrial constructions.
J–Grade is used to make platform-frame construction as well as being sold in some of the largest DIY stores in Japan. The j grade has small and tight knots and a clear bright appearance so that it gives an amazing look. Despite being knots it does not make this wood weak.
Why J Grade Lumber?
In many countries, some people like A-Grade homes and like to live in them. Because A-Grade wood is easier to work with and gives a better finish. But this does not mean that A-Grade wood should be installed on the entire wall.
The opinion of the good house owner is “A particular wood species should be used for a particular place“.
A house made of A-grade lumber lasts for about 100 years. Whereas a house made of J grade stands about 38 to 40 years or more it all depends on Maintenance.
Half of all homes in Japan are demolished within 38 years whereas in the USA 100 years. Because In the USA most of the houses are built with A grade lumber. Due to the low age of home, there is no pre-owned market in Japan.
Still, J Grade lumber is destined for Japan. Because J Grade lumber has a high-strength/lightweight combination, SPF lumber is an ideal choice for general interior and exterior applications. The J-grade lumber is perfect for Japan Because it meets all their needs. You don’t have to check for anything because it is all straight and Sometimes knot-free.
The Market of J Grade Lumber
J Grade Lumber originated mostly from the Canadian Forest. Forecasting is done according to the needs of this customer. J grade importers all over the world from the Canadian market. Due to this, sometimes its price becomes very high.
The National Lumber Authority (NLGA) is the organization responsible for establishing, issuing, publishing, revising, and interpreting Canadian Lumber grading rules and standards.
The general dimensions of lumber SPF J grade are sizes: 2×3, 2×4, 2×6, 2×8, 2×10, and 2×12. Length is 6’ to 20’. But sometimes manufacturers also provide sizes as per customers’ requirements. Because of high-quality standards and grades of dimension lumber, SPF J grade constructors love to use this grade as a construction material.
Advantage of J Grade Lumber
Cost: J grade lumber, available at a low price. But it has the quality of Spruce, Pine, and Fir lumber.
Quality: It cannot match B grade and A grade but it gives similar look, feel, and quality. So that it is in great demand in the market.
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