I did read the specs. In fact, I ended up calling SystemThree, directly, to ask a few ?'s. Unfortunately, they wouldn't say it would work, for sure. Their, products, much like Liquid Nails, requires at least 1 surface to be somewhat porous. None of my surfaces are porous. I may end up having to screw in the gingerbreads. I do have white-capped screws. I just didn't want to mess with having to install them this way.