I was gifted a "wired" Google Nest camera/doorbell. My house has vinyl siding. Where the current button doorbell (and wires) is located is where the Nest will go. My problem is that there is about a 1/2 to 3/4 void between the siding and the house so that when you push on the button the siding itself collapses inward also. We don't get many people ringing the doorbell so I never worried about but now I'm wondering about the best way to mount this Nest. I'm thinking of maybe using a foam filler like Great Stuff to firm it up but I also worry that improper usage of that foam may actually balloon out the siding. I suppose I could hold the siding in place so any foam expansion would creep away instead of outwards? Any thoughts would be appreciated. Thanks!