Sorry, I can't spell!!!! Off on a daze when writing this question.

seam between the Durock.

Basically you can run the tape and hold off on the thinset until you reach that area while tiling

Not if he's going to Redgard it. It has to be thinsetted prior to using the Redgard.

As for the joint where the walls meet the ceiling, it depends on whether you're going to tile or paint the ceiling. If you're going to tile it, then thinset will do fine there, as well. If not, then you want to use Durabond, which can be sanded down and painted just like normal joint compound, but won't reimulsify the way joint compound will. AS for the greenboard in the rest of the bathroom, that's fine, whether you're going to paint it or tile it.

Thanks for the help. I haven't truely decided on the Greenboard for the ceiling just yet...but I do remember that I had heard about the sagging issue and was going to check the length. Worst case is that if it was greater than 16", then use furlows between the ceiling peices.

I am sorry, but what exactly is thinset? Is it just the compound that is used to hold the tile? To be honest, tiling is bigger than I, so I have hired a company to do the tiling. I am just doing the demo & prep work as I have been reading the forums and books for the last few months.

I have done drywall many times before, including a lot in the kitchen rebuild that I did..I just have never played with Durock before..and wanted to get it right the 1st time :).

Thanks for all the info,
Aaron

Found the URl below about thinset..sorry.

Also, if I put the mesh tap, between the seems for the Durock, and then cover it with thinset..the next step after that is to put on Redguard..correct?

So when the contracter tiles..they'll put another layer of thinset for the tile itself, is this correct?

Here is a link that might be useful: Wikiepedia Thinset

Correct. You may want to sand or stone the edges of the thinset when you tape the durock, though, before you redgard.

Just like when you do normal joint compound, smooth out to make it look as flush as possible?

And I just noticed, it isn't furlows...its furring strips..perhaps even 2x4 between the ceiling members.

I just started the fun part of demo...gotta love drywall dust :)