Google/Bing "juniper blight" and go from there.

cut out the dead.. back to a live forking branch..

and hope for the best ...

i dont understand what you mean.. on how the same branch can be on both sides of the plant ...

i would not waste money on treating it .... replace it with something other than a juniper .. if this becomes a yearly thing ...

also.. your plants are very close to the house... use google image.. to see how big any given plant gets .... see link as to this one ...

the peeps in the conifer forum can guide to much less aggressive plants... if you wish to remain in the conifer spectrum ...

ken

Here is a link that might be useful: link