This heavy high gain aerial looks like it has been fixed to a "mast" that's about 1 inch in diameter. Check out the bend in the mast. It's made worse because they have used a cheap and cheerful chimney bracket. These are pressed from a thin sheet of steel and this one is severely overloaded. How anybody could leave this in such a state I don't know, but it's quite clear these installers didn't give a monkeys about making the installation secure.