This glue works well on all kinds of foam such as EPP, EPO, EPS, KT board(PS foam), depron, etc. Unlike CA, this foam glue is safe on EPS, KT board and depron.
The glue will begin to cure in about 10 min. Make sure you apply only a thin layer because the more you apply, the longer it will take to cure. It doesn't have an instant bond and it doesn't create a brittle joint.
This glue is what the foam airplane factories use when they produce thousands of models a month.