To the right and left of my front door are 6" deep protrusions/doorposts covered in stucco. I'm pretty sure (from another home installation project) that these posts are not really doorposts but are stucco over rigid foam insulation.
I want to mount a video doorbell (weight less than a pound) to this area next to my front door. I have bits that are diamond tip rated to go thru the stucco. I can even get a hammer drill if needed.
My concern is how to get the two anchors to hold if there is nothing behind the stucco other than rigid foam insulation.
The frame for the doorbell is what is actually mounted and holds the doorbell which needs to be periodically removed for charging. So, the mounting frame for the doorbell will be jiggled and wiggled somewhat as the doorbell is removed for charging and then re-attached. My concern is the anchors will loosen or never hold to begin with.
I have thought of drilling the holes (6mm drill bit recommended by product) and then filling the hole with caulking or hot-glue before inserting the anchors . Have no idea if this would work.
What's the best way to deal with this job?