Applying the finish can be done with a paint brush or a pad applicator or roller. Here are some tips, but make sure to follow instructions on the finish container.
Make sure you stir thoroughly before application.
Do a section at a time, brush between boards and along the edges, coat evenly along the grain of 2 -3 boards at a time.
Keep a wet edge to avoid lap marks and double build.
Work towards natural breaks such as joins.
Don’t stop midway along a board.
For further expert advice, consult the qualified Team Members at your local Bunnings Warehouse.