When further processed, no matter whether it turns into a piece of furniture, floor, walls or roof, the wood dries out even more.
The moisture content of external wall cladding is around 12-18% (depending on the atmospheric conditions).
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When boards, squared timber or slabs are being stacked, covered and stored outside for air drying, the wood ends up with a moisture content of approximately 12-20% (depending on the climatic conditions).
Like all living organisms, fungi too look for the best possible conditions and prefer to take the way of least resistance. These optimum living conditions however are not around 20% but rather around 30% moisture content.
Natural wood preservation to prevent fungi
In this table, you can see the ideal moisture content which fungi need to grow to decompose wood. (Table: Bernhard Leisse: Treating Timber Naturally, Heidelberg 1994) The key to those specialized fungi and insects lies in the moisture content of the wood. Building constructively allows us to use naturally dried wood in specific ways so even beetles and fungi will not cause any harm.
Insects are of no real threat to good quality wood either. Only very few are able and interested in feeding on dried wood. If we manage to handle this small group of insects naturally, we don't need to treat wood.
When exactly is wood breaking down? 99% of the breakdown occurs in the forest, under the open sky and exposure to the weather. Our houses all have a protective roof which means that when we cover our build with a roof, the wood stays dry, unlike in a forest.
Understanding natural organisms would help us find simple ways to keep them from breaking down our buildings and furniture. If we use common sense, we don't need to poison our surroundings.
The next generation of trees is metabolizing the energy of the old trees and keeps the cycle going.
Is it wise to replace natural organisms with chemicals and fight them with poisonous sprays? Or is it more productive to investigate and study the life of fungi and insects? When a tree dies, falls and begins to decay, insects, fungi and micro-organisms are there to help break down the bark, wood, leaves and needles to return it to the soil where it came from. A healthy forest recycles and reuses everything by turning it into fertile mulch.
The homeowner could have saved a lot of money had he used natural wood preservation methods along with good quality wood.
What actually do we need to protect our wood from? In addition, this brief went on to prescribe the demolition and the expensive disposal of the toxic waste. The newly erected balconies were made of alpine larch which has been harvested at the right season and moon phase.
The main reason is the disregard of constructive measures to protect the wood. It also suggests that chemical wood preservatives do not effectively protect external wood, however, it does turn wood into toxic waste."
Here is an excerpt from a tender brief from an engineer's office:
"The existing wooden balconies have, despite consistent maintenance and treatment with commercial chemical wood preservatives, fully rotted away. Natural Wood Protection
Working only with natural wood protection has several advantages. Natural wood will provide a healthy and long-lasting usage of buildings and also eliminates expensive and complicated products. Before you embark on this, you need to discuss with a professional as working with green wood requires particular skills.
If in doubt, the best solution is to dry building wood naturally to about 20% moisture content before building with it. When properly used, building wood sometimes can finish its drying process after installation. For example, if it is guaranteed that the beams are aerated from all sides and the build is being protected from rain and snow, beams for a timber ceiling can be used a few months after they have been cut in the saw mill.
Recommended times for storage and air drying of wood
Building wood, depending on what it is being used for: 1-5 years Floors, cladding from coniferous wood: 1-2 years Floors from leaf trees like oak needs longer storage and drying time: 2-4 years Furniture Wood: 1 year per 1 cm wood thickness My tip for building wood is the waning moon, close to new moon in Capricorn which falls in the middle of winter, usually around Christmas and New Year.
This third rule has been handed down through oral tradition and has not been scientifically proven. For those who want to try it anyway, choose the days with rule 1 and 2 and when the moon is in Capricorn, Virgo or Taurus.
If you adhere to rules 1 and 2, you will produce high-quality building and furniture wood. For all those who put a strong emphasis on the right zodiac sign, here is rule 3:
3. Rule - Zodiac Sign: 2. Rule - Moon Phase
Every lunar month as 14 days from full moon until new moon when the moon is waning. Traditional records say harvesting in winter closer to new moon is better than closer to full moon. It begins pulsating through the tree again at the end of January, early February. For trees, the winter lasts from September to January/February. When in doubt, I recommend the months in the depths of winter, which is November until January.
1. Rule - Winter
Mind you, the biological winter of a tree is not exactly identical with our calendar winter. In the northern hemisphere, the stream of sap slows down and finishes in the last week of August. The time you are putting into research and planning now will save you time and effort later and helps you avoid harm to yourself or your tenant.
Please do not expect to find open doors with all trades people when coming along with your list. Many companies will be overwhelmed. |
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