If you use linseed oil stain for planed finish boards and the timber is prepared with high quality, then no special protection will be needed. It is recommended to apply the stain in two layers. We recommend oiling these boards from all four sides. The inner part of the board, which is not exposed to the sun, can be impregnated with pernica.
More absorbent surfaces such as logs and finely sawn boards should be primed with linseed oil pernica. Surface priming is a very important factor when working with oils. The deeper the wood is impregnated with this oil, the better it will be preserved in the long run. It will last longer and only the tinted part of the facade will have to be renewed over time. It will not be a large cost and should be renewed relatively rarely. In order for the oil to penetrate deeper into the surface, it can be heated or diluted with pine turpentine.
If timber such as deck boards, lumber, etc. have been treated with an antiseptic, this will only be a plus.
If you use linseed oil paint, we recommend using linseed oil Primer, which also has anti-mold additives, for pretreatment. We recommend adding about 10% of the chosen color tone to the first primer coat.