I made a design for my new sewing studio and used Gorilla tape to join the two 4x8 sheets of insulation board. After wrapping it tightly with batting, I used a staple gun and it worked fine. I was going to attach mine to the wall (I even cut out a section to fit around an electrical outlet) but to the advice of Anna Marie Horner...she suggested I not attach it permanently in case I wanted to lay it on the floor for use. (I took one of her classes at a LQS here in Maine.) I read somewhere that you can use command strips on the wall so you can take it up and down... You can see the outlet cutout toward the bottom between sections of the quilt. [ATTACH=CONFIG]603081[/ATTACH]