Try water only, but get a little closer to the wood when pressure washing. Basically, you are just trying to remove the oxidation "fuzzies".

If no stain on the wood, then you do not need to remove. Try going over the post by sanding or rewash.

That is oxidization that was not removed fully. You cannot just spot fix. You would have to remove all and start over.

It is impossible to retain the natural color. For UV protection from graying, your stain must be tinted, and that means the color will change or be en...

It can still be done.

You have to use the Step 2 RAD Brightener after the Cleaner to neutralize and restore the pH balance. That would fix this.

See her about new wood: After wait and prep, try Armstrong Clark Stains: You can never use a poly over an exterior wood stain nor can you use a sh...

A stripper will not remove a solid stain fully. You can use it to remove some or possibly most but you will still need to sand to get it all off.

The gray looks like a solid stain and that means you probably cannot strip it. You may need to sand it all off to fix this.

You would have to ask them for permission to prep and stain the side that faces them.

Rain will not harm anything. Try a semi-solid color so the wood blends better. Armstrong Clark.

See here for new wood tips: None of the stains that we know of will have a color that is gray/brown. You could try mixing two colors. Something like...

Just comsmetic.

You do not need to pressure wash prior to sanding. Copper Green is not needed and will probably not help as well.

You will have to power sand off the red paint if you want to remove it. Do this first to remove 100%. Once done, treat all wood like new wood. See her...