Failed foam or poor maintenence ?
The foam isn’t the problem on this roof. It’s because of improper maintenance. Wrong materials used for repairs, neglect and abuse that has led to a total tear off of this foam roof and and new roof system being installed.
As you can see from the repair done on the picture above. Yes thats a plywood patch.
In picture above you can see incompatible materials have been used that’s asphalt mastic with elastomeric coating over the top. It’s because of things like this that this roof is being torn off. Poor maintenance and poor repair practices lead to costly and early roof failures. You can see where the roof coating has cracked this is often times because of cheap coatings being applied to much and to often.