Applying oil with a roller is just as good as with a brush, but using a roller saves time and energy. Try Anza’s terrace 2-in-1 tool, which is specially designed for all types of terrace treatments. The pad covers two boards at a time and makes the work go faster than with a regular brush.
Also, don’t forget to use a extension pole to get more power to those big areas. Remember to stroke in the same direction as the grain of the wood.