This is an interesting question and it’s one we get asked often.
The most recent question is:
“Can you sand the hail marks out of the fence wood?”
The answer is no, unfortunately Mother nature wins here. Once hail has hit the fence we call it scarring the wood meaning there may be little or big dents or gouges in the wood, small holes and obvious areas where the color of the fence will be different.
It almost looks like pock marks. If someone sands the areas where hail has hit the fence it smooths out that area. When stain is applied it will look differently and be very noticeable.
The best option is to have a fence professional come clean the fence to soften the most noticeable marks and even out the wood coloring. This will help the scarring blend in.
Then restain over the top to blend the scarring or dents in the wood. It is not ever going away it will be minimized. Scars are always there for life just like our skin however over time they do fade and become less noticeable.