is Yakisugi appropriate for larch for exterior use and does it need additional protection (maybe only flax oil) ?
- does larch need treatment with fungicide/insecticide?
- can I rely on natural oils (with UV protection like the OSMO oil) to protect the larch from UV rays?
- can one make oils with UV protection - Jay C. have wrote a lot of information about oils (and his favorite Heritage Natural Finishes) and there was a thread in permies (http://www.permies.com/t/24462/timber/recipes-treating-wood - " throw some flower petals or brown oak leaves into the mix") with ideas for UV protection - someone tried it? or other ideas?
- is Yakisugi appropriate for other wood species for exterior use, esp. pergola - here pine is most popular (with all its troubles to conserve it), there are spruce beams imported from abroad (BSH „brettschichtholz “). May be one can find oak and black locust (Robinia pseudoacacia) (used for deckings and garden posts but most of all for heating - burnt in home stoves! )