My house had several cable runs left from the previous owner that were cut and redone with every TV service they tried. A handful of the runs were brought in from the outside of the house through external walls. (My external walls are all brick.
The cables were all cut to about 6 inches in length and pointed down to prevent water from coming in when I bought the house.
I would like to remove these completely, but I have no idea what to fill in the hole with...
Can I just fill it with Silicone caulking? When I had Fios come out and rewire the box to use the clean cable runs and cat6 runs I installed in the attic, they used a translucent blue goo that hardened after about 10 minutes where they ran the cable into the house, can I fill it with that? If so, what is the goo and where can I buy it?