Intergrain Universal Timber Oil 5LIntergrain Universal Timber Oil is an oil based coating designed to protect and nourish all timber species from within. The deeply penetrating, clear finish of this exterior timber and decking oil will never flake, blister or peel and helps prevent warping, cupping and splitting. Universal Timber Oil will allow the timber to gradually fade over time to a natural grey or can be tinted using Intergrain Colour Additive for a longer lasting finish.