How to Weather New Wooden Fence Planks | Hunker- making new wood look weathered ,Step 1. Weathered decking. Lay the raw lumber for your weathered wood fence flat, preferably in a sunny location to speed drying time. If you are working on a wooden deck, protect it with a plastic tarp. Lawns and most other surfaces need no such protection.How to Create a Weathered Wood Finish | Hunker21/11/2018· For a more weathered look, brush a light coating of the solution onto the wood with a foam brush or inexpensive paintbrush. Adding more will give you an even to achieve a darker look. Allow the wood to dry completely before using it in a project.