Logging the old way.

Woody110

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I read a post on social media about how trees are prepared in old times, thought it was rather interesting...

In today’s logging and lumber industry, it is the new normal to treat nearly every piece of lumber used with various chemicals in an attempt to preserve the wood. However, this is often a temporary “fix” and these shortcuts have proven to be ineffective over time. But there are tried and true methods of harvesting and preserving logs and lumber the natural way. These techniques have been used throughout Scandinavia for centuries and have been proven to preserve logs for as many as 1000 years without the slightest signs of rot or decay.

The magnitude of this sustainability is unparalleled by any other industry. If we simply take a moment to look back and apply the knowledge our forefathers knew (before it’s too late), we can turn around today’s modern consumer based home building industry and greatly affect the environment, our planet, and even our personal health, for the better.

There are two known techniques of preserving the wood with resin and taking all the sugars out of it a year before felling it. They can be applied both on the growing coniferous trees or just one of these.

First is the “Ringbarking in Norwegian” technique. Removing the bark on the lower part around the tree 10” wide about 15-20” from the ground. Like all vascular plants, trees use two vascular tissues for transportation of water and nutrients: the Xylem (also known as the wood) and the Phloem (the innermost layer of the bark). Ringbarking results in the removal of these two vascular tissues and can permanently stop further transportation of sugars and water. This knowledge executed correctly will cause the tree to go through a slow death process, removing all sugars and drying the tree at the same time before it is even felled. The result is a material/log that is ready to use, more stable, experiences less cracking, shrinking and will last for many centuries.

The other one is the “Blæking in Norwegian” (Injuring/Scaring) technique. “Injured” meaning – the bark is chopped off randomly with an axe so that the tree can start to heal itself and push all the sugars out of the sapwood and fill/replace it with resin and antiseptics. It is an almost forgotten technique in modern forestry. This is one of the ways logs, in which log-buildings have been prepared throughout Northern Europe for thousands of years, make them stronger and resilient to rot as the sugars and water in the sapwood are in turn replaced with resin and various antiseptics. There is common to call such prepared pines an “Amberwood”. It takes a whole cycle of 4 seasons until the tree is ready to be felled after injuring/scaring or ringbarking.

It will start to die by the end of next summer (if you injure it in the winter before) and then by the next winter it is ready for felling. It should be felled when the roots are frozen and when the new moon is approaching based on the old carpenters calendar when is the best time to fell the trees for log buildings and timber frames.
 
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Janne

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Then once the structure is erected sand fully settled/dried, a coat of pich tar now and then will preserve the wood for Centuries.

Check out the Norwegian stave churches. In Sweden we replaced them to grander buildings and lost the beauty and history.
 

Robson Valley

On a new journey
Nov 24, 2014
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McBride, BC
Those are very interesting curative processes.
Nice to read about methods so unlike modern forest harvesting.

Would they have been of value for the tone wood qualities of the stringed instrument grades?
Until how recently have those processes been of preferred value?

Here, that would be a labor-intensive and casual approach to harvesting.

None of our harvested forests need immediate chemical treatments for any reasons.
The end user can demand nearby treatments = up to them.
Trees here are harvested like wheat. Then you are legally required to plant the next crop (maybe 70 years).
Canada exports raw logs, lumber of every dimension and mile long hopper car freight trains of compressed wood pellets.

We measure the local annual harvests in the millions of cubic meters.
Our steam drying kilns are big enough to envelope whole train-loads of lumber.
 

Dave Budd

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interesting stuff. I'd like to know of any people who have done this sort of thing in living memory, partly because I'm well aware of the extra hazards involved in felling a dead standing tree.

I know Finnish handle makers would often strip the bark from an area of (birch) tree that would furnish an axe handle. Basically as described, the wood left without moisture and sugar grows harder, thus providing a tougher handle when the tree is eventually felled.
 
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Robson Valley

On a new journey
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I'll guess that horse-logging began in eastern Canada in the early 1600's
with the expansion of the Hudson's Bay Company fur trading activity.
Sunken submerged logs in old mill ponds show the anatomy of the depressed temperatures from the 1700's.

The railroad got punched through the McBride district (where I live) las than 100 years ago.
Plenty of horse logging in winter with huge sleighs and draft horses.

If you would ever like to come and pratice your skills cutting dead trees,
we have 18,000,000 ha trees killed by the Mountian Pine Beetle infestation.
Add to that, the past 2 summer have been the worst in history in BC for wildfires.
I do not know how many thousands of km^2 got toasted.
 

Janne

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Dave, I know that in Sweden and Czech Republic people that build or renovate old houses do this:
They select the trees ( spruce, fir) then measure out the future log on the bole, for thickness and length. Then cut off the tree above this measure. This is done in winter.
The following winter the rest is cut down.

I restored a so calked ’roubenka’ in the mountsin region north of prague and this is what the builder did.
He said the sap goes up anyway and preserves the wood.
 

Janne

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They had no other way to preserve the timber ( inside) other than an outside coat of expensive pitch tar.
Even with periodic pitch tarring, the timber will rot from inside out.

Remember, timber is basically the sole building material in the mountainous areas of Europe, Scandinavia, Finland and Russia. The buildings had to last more than a generation.
 

Robson Valley

On a new journey
Nov 24, 2014
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McBride, BC
Western Red Cedar (Thuja plicata) is more naturally durable than the other conifers that you find in the Taiga (aka Boreal Forest Biome.)
As a result, the cost sky-rockets for the substantial volume of wood in each log.
At the same time, it's easy to see how important each log becomes in any restoration repair project.

Just the other day, I looked at a resort project in Scotland.
All the buildings were originally assembled here and then dismantled for reassembly in Scotland.
Little log cabins they are not.

https://www.pioneerloghomesofbc.com/

SPF (spruce/pine/fir) forestry is a fine tuned business which operates on the slimmest of margins.
So much wood frame construction is done across North America
that the bulk of the needed wood is cut to exact length at the saw mills.

The vertical "studs" are not 8' long. They are 92 5/8" long.
With heads,plates and finishing, the rooms will have exactly 8' ceilings.
 

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