Douglas Fir Lumber Grades

Douglas fir it is very strong and is less prone to warping and spitting than syp.

Douglas fir lumber grades.

Limitations of the nhla grading system. Douglas fir is technically not a true fir abies genus but is in its own genus. That means of course that it does not encompass exotic hardwood species such as ipe or mahogany or softwood species such as red cedar or douglas fir. Home species douglas fir select grade douglas fir lumber of this grade is intended primarely for use in housing and light construction where it is exposed as paneling shelving and other uses where a knotty type of lumber with the finest appearance is required.

Eastern white pine northeastern lumber manufacturers association. The country clinic the clinic was built by jerry laverty and laverty construction a longtime customer. The wood siding shown in this picture is select tight knot channel that was also. Hem fir it is weaker and more prone to warping and splitting than douglas fir but more receptive to preservation.

General definitions and instructions for grading eastern white pine boards. Douglas fir s light rosy color is set off by its remarkably straight and handsome grain pattern. It encompasses a group of western species. The picture shown above is an example of super high end select structural grade douglas fir.

The tree itself grows to be very large and yields a large amount of usable lumber and veneer for plywood. All pictures are meant for a general grade description. Home species douglas fir select structural grade douglas fir select structural posts and timbers are graded primarily for strength but can be used also for good appearance. Interpreting a grade stamp.

Potter commissioned the recycled beams from an old barn in eastern wa. Potter mountaintop home a combination of douglas fir larch and western red cedar give this home a timeless western charm. The lumber grades in this category are intended for applications where strength is not the primary consideration. It is an incredibly valuable commercial timber widely used in construction and building purposes.

These depend on various factors like the type of wood used and the number and types of defects if any. Western wood products association 1500 sw first ave. The 5 grades of eastern white pine grade photo sheet hem fir. First and most significantly the nhla grading system as its name implies is limited to domestic hardwood lumber.

Grading is by visual inspection and is a judgment of appearance and suitability to end use rather than of strength. An overview of lumber grades and wood quality. Before we get into the different grades of lumber let s take a look at the various defects you may find in a piece of lumber. Lumber is graded based on the quality and appearance of the wood.

Standard grading guides for northeastern lumber. Heartwood is russet with high contrast between the springwood and summerwood. Df doors manufactured from products in the factory shop grade classification are renowned for their beauty and performance. Hem fir western.