Give some for Home Renovation

I have listed some of the options / ideas of what I am going to do with each part:

1. Bathroom Ceiling:
Option1:
• 5/8” greenboard
• 6mil plastic sheeting
• on attic side, greenfiber blow-in up to a recommended amount to achieve a high R-Value

Option2:
• 5/8” greenboard
• Faced Fiberglass Insulation Batts (faced down toward the bathroom ceiling)
• On top of batts, greenfiber blown-in to a recommended amount to achieve a high R-Value

Which option would make more sense?

2. Exterior Wall (will have no fixtures / no running pipes, just a window)

• Ultratouch batts
• 6mil plastic sheeting
• 5/8” greenboard (for better insulation)

3. Tub/Shower wall surround:

• No insulation in wall cavities
• 6mil plastic sheeting
• ½” Durock
• Shlutzer Kerdi membrane
• Tiles


4. Also, I will be insulating a garage ceiling, so our bedroom (which is directly above this unheated garage) will be much warmer in the winter months.

• About 2” of insulated sheathing (like XPS, EPS, or Polyiso, etc.)
• Ultratouch batts
• 5/8” Type X Drywall

In terms of insulated foam sheathing, I am not sure which one would be best for this project. Should I use boards that contain laminated facers on both sides, on one side, or neither, just “unfaced”? Should I use XPS, EPS, or Polyiso?

Please, advice / comment on all of these above points.
Thank you.

 

Tastes like spam...

Same post from legit user here:

https://terrylove.com/forums/showthread.php?42978-Need-some-advice-in-my-renovation