Responded in comment area for staining new deck article.

That is both mildew and dirt. The good news it is lying on top of the wood and not in or under the stain. Have you tried some soapy water? We have als...

It is citric acid based so it would be like chewing on a lemon. Does his face cringe up?

No you cannot add sealer on top of the TWP. Try wiping off the excess stain that has nor cured with a rag and some mineral spirits.

Sorry but never used either of those products in our projects. Normally for your area we would suggest the TWP 1500 Series or the Armstrong Clark...

Does anyone have any experience with "green" deck stains such as Vermont Naturals or Hemp Guard? I would be interested hearing about: appearance, dur...

It does not matter if it rains after stripping.

Clear as in no color will not change the appearance. It also will not offer protection from graying. You will need a tinted stain to prevent UV grayin...