Customers often ask us how they can treat the chestnut stake to make it last as long as possible.
However, before treating the chestnut pile, it is necessary to ascertain the quality of the product by knowing its origin: the best chestnut grows in an acid soil with a little rainy climate and has a slow growth thus determining an early formation of the heartwood compared to the sapwood which makes it very resistant.
Chestnut is also an essence that contains tannin , a substance that naturally protects it from insects, fungi and molds and it is preferable to use the barked pole to prevent these from nesting under the bark.
For this reason, chestnut is not treated with salt-based impregnating agents (impregnated in an autoclave) since they are neither absorbed in depth nor are they necessary: a good natural chestnut pile is already destined to last many years .
In particularly humid soils, however, there may be a need to further protect it to give the pole a few more years of life. In this case, we recommend burning : a totally ecological ancient technique that involves the carbonization of the tip and the area in contact with the ground to make it unattractive to mold, fungi and insects.
We do not recommend the use of tar , which in addition to being polluting, has a short duration on the pole. Instead, the use of cooked linseed oil is recommended : a few passes over the whole pile and left to dry to form a protective film. It is a process to be repeated periodically. Finally, it is possible, for aesthetic reasons, to use flatting varnish for wood to give the preferred shade to the pole.