On Thu, 17 Aug 2017 20:14:06 GMT, Iggy
m wrote:

replying to Jack, Iggy wrote:
I'm glad you stood up for and went with a Vertical Installation! It's the
*only* right way and gives you the intended Fire Protection. Horizontal is by
and for Hacks.
Exolain please.
Professional drywallers everywhere dissagree with you - and for good
reason.