Jon, sorry but we have no experience with this product and have never heard of it. No need or advantage to stain the underside.

You cannot absorb well if covering an old stain. It should work though to get a uniform appearance. Solid stains will look like a paint and will peel ...

I purchased a home with a large deck that was last stained in 2009 with a Cabot semi-transparent oil based stain. I’m trying to get another 5 years of...

Products like this are not strippable. Your only option is to sand it off or replace the wood. Sorry :(

Thanks, I will recommend that to them and try and take some pictures and post them here, you've been very helpful.

They are not all the same as far as strength. As contractors we like to use powdered strippers. This allows us to mix the product stronger/weaker base...

Thanks so much, that's very helpful. Does it matter what stain stripper they use, are they all much the same?