Definitely, I will post pics. Thank you.

BTW, TWP does better when dealing with algae and mildew, that's why we suggested it.

TWP 100 Series for this and we would strip to be certain we remove all of the old Thompsons. This should not be a hard deck to restore. Post some afte...

Okay! These articles are helpful. Looks like we should go with a semi-transparent stain...thank you!

New wood needs to season before staining:/p> This will help to blend the new and older wood:

Of those brands you mentioned, the Read Seal is probably the best. Not sure if you will get it in a dark gray though.

No it should be stripped. If you do not remove, you will run the risk of the new coating not adhering or penetrating into the wood grain. Post a pictu...

Thank you. I will look into these products.

Not sure. Could just be your tree was shedding dirt last season? Sounds strange but we have seen decks turn dirty under trees one year and not others....

It's now spring and the deck looks a lot worse. Looks like you were right it is dirt possibility from the trees. I can only remove it with a power was...

Paint does not pressure wash off. If you want to use a stain like the TWP, you will need to sand it all off.