Pine tar is applied for the impregnation of wood, protection of wooden products (boats, piles, poles, wooden roofs, etc.) and log buildings against rot, decay and other biological fungicide infections, and protection of wooden surfaces against UV radiation and ageing. Pine tar soaks well into non-planed wood and provides wood a dark brown and waterproof surface. Darva contains 100% pine stump tar. Can be diluted with turpentine or linseed oil.