Editing Foam Background Guide (section)

=== Step 4: Touch up foam and add hardscape ===
[[File:Foam background hardscape and carving.png|right|frameless|500x500px]]
Repeat Step 3 until each wall is covered. Use expanding foam to attach cork bark, wood, and other hardscape to the background by pressing pieces into freshly-applied foam.

Allow 24-48 hours for all of the foam to cure before continuing.