I have a relatively new house and idiot me forgot to unscrew the hose from the back hose bib over the last winter. I finally got a plumber out to replace it but he just left it flopping around in the wall. I have pex plumbing in the house so what he did was put a pex to copper fitting and bent a soft copper tube at 90 degrees and fitted that to the silcock. The problem is that without it attached to the house there is no counter resistance when i turn the valve on the hose bib. The whole silcock twists and I am sure that is putting stress on the fittings.
I know I have to attach it to the house but I have natural stone decorative masonry and the plumber warned if i try to drill into it that i could crack the stone. This was why he wouldnt attach it to the house because he didnt want to be liable.
Are there any tips for how i can secure this to the house without cracking the stone? Is there something i can do when drilling to prevent this? Could i potentially use adhesive to the masonry to hold it in place?