The wife and i have been trying to get things arranged to start on a house in the spring. Green wood will complete 70 to 80% of its total shrinkage within three to four months after it leaves the sawmill—assuming the climate is warm and dry, while for the next year or so, only minimal contraction will occur. This is basically what a kiln does-it reintroduces moisture on a schedule to keep the outside of lumber as moist as the inside, and all drying evenly. For the past two-and-a-half decades, the Japanese economy and the B.C. lumber industry have been linked and it is no coincidence that they have slumped at the same time.
Green developments are turning up everywhere, from water-saving condominiums built of recyclable materials where decaying industrial buildings used to sit, to schools and businesses designed to make the best use of energy while providing good air quality. The cross-supports should be aligned because any low or high spot or twist from opposite corners of the stack will result in lumber with the same amount of warp.
Here’s an article describing how to deconstruct an old house and recycle the lumber for building As is explained, buildings are constantly being demolished, but oftentimes you can track down the owners and convince them to let you deconstruct the building. If this is not possible, you can box pile” the lumber (Figure 2): For each layer, place the long boards on the edges of the stack. When I buy a 2X6 I don’t like buying at certain lumber yards as a finish planed 4 side 2×6 is supposed to be 1 1/2 inch thick by 5 1/2 inch wide.
Neatly and properly stacking, stickering, and weighing wood will go a long way towards ensuring that the drying process will result in flat, stable, and usable lumber. One way to look at this is to remember that before the modern age, air drying lumber was the only way to prepare wood for furniture making. It did not think the Japanese lumber industry and its traditional building methods would be able to meet the needs of an expanding population.
We recently had a major storm and I’m now the proud owner of maple and oak (some white pine) logs. By using kiln dried lumber, Hansen Buildings minimizes any shrinkage issues with any lumber species they use. Due to rising stumpage fees, labour costs and a new forest practices code, Canada’s coastal industry has the highest lumber cost in the world. Unlike most barn wood or salvaged building boards, our product has never been chemically treated and so its beauty is 100% natural.
Lumber producers deploy expansive and expensive wood MC control systems at all phases of wood production. It isn’t perfectly straight and the walls warped some, but it is a good barn and has been up for 100 years. We had hoped to use some of the original lumber after trimming off the rotted parts. Green lumber can contain upwards of 130 percent moisture; cured lumber can have between 7 and 20 percent moisture. I am in the process of building a tree house for my sons and have access to three local sawmills that are now cutting white oak.
This log yielded the highest quality #1 grade lumber that we could not afford at the lumber yard. If you want to learn more about how to build with uncured lumber, you might want to read my book The Green Wood House (which should soon be available from The University Press of Virginia, Midmont Lane, Charlottesville, Va. 22902). A timber you can shoot crows through was a heavy green timber left baking in the sun.