Commercial grade double-sided foam tape can be used for sign installation on smooth surfaces. For heavier signs or signs that need to be secured well, use foam tape and silicone together to hold signs in place on wood, steel, and concrete surfaces. The foam tape holds the sign in place until the silicone sets to create a very secure bond.
Ensure both surfaces the double sided tape will be applied to are clean and dry. To clean dirty surfaces, wipe them down with isopropyl alcohol and allow to dry.