Exterior finishes that rely on natural ingredients to provide protection usually fall in two categories; pure oils such as Tung Oil, and ‘long oil’ types that combine a resin with oil. The significant difference is that a pure oil will penetrate and seal within the pores of the wood, while the long oil type will penetrate less and harden on the surface of the wood. Finishes that rely on natural ingredients often have few, if any, additives that speed drying. This allows them to slowly saturate and harden within the wood fibers for greatest durability.
Note: Goosebay is no longer a supplier of Penofin products.
