Do I need to assemble my Aviya Foundation? Customer Support August 16, 2019 13:56 Updated Yes, you will need to assemble the foundation. Easy to follow instructions are included. Related articles How much does the Aviya Foundation weigh? Can I use a box spring instead of a foundation? How much weight is the Aviya Foundation designed to support? Is sales tax charged from my state? Is the mattress compressed in a box, or is it shipped full size?