No the mortar bed does not bond to the liner without an adhesive.
We recommend using Liquid Nail 715 or Liquid Nail 915.
Please call Oatey Technical at 1-800-321-9532 for further assistance.
Of course you can! I am a licensed plumber and you can use shower pan liner glue to fix two sheets together!
As long as you can have it go up the sides 6" you will be good!
Yes, but you're better off to go to Home Depot to purchase a 3' wide piece cut to your desired length (9'). This is folded, where as the bulk liner at Home Depot is on a roll.