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? Is the mattress compressed in a box, or is it shipped full size? Can I use a heating pad with the Aviya Mattress? Can I use a box spring instead of a foundation? How long will it take for my Aviya Mattress to arrive?