We have done some serious testing and have found that this adhesive works perfectly with the foam. In the event you make a mistake, simply cut out a 90° degree piece and glue in another piece. This adhesive is strong but can be repositioned for several days, allowing you to get the corrected piece sculpted into shape. This adhesive can also be used to adhere sheets together or blocks to blocks. Additionally, Super 77™ created a minimal bond line compared to any other adhesive – necessary for sanding two sections together.