skim coat the foam before laying down the glass

Before I lay down the glass, I have found that I can create a better bond with my corecell foam if I first give the foam a skim coat of epoxy / microballoons / aerosil .

Here's my recipe for my skim coat :

300ml B side
600ml A side.........mix with drill mixer

then mix in the dry stuff :
* 2000ml aerocil ( fumed silica;wicked stuff don't breath it)
* 1000ml glass microballoons

It ends up being like fluffy white cake frosting and the aerosil keeps it from running.