GSPHUNTER
WKR
- Joined
- Jun 30, 2020
- Messages
- 4,579
If your line is 1", the OD is 1-1/8". go with min. 1.5" penetration, better yet 2". A two inch hole will not affect the integrity of the wall. While not necessary in your application, I have used fire block. I think Loctite makes it.Another question for the brian trust. Is hydraulic cement used to maintain structural integrity of the wall? Why not use silicon and a hole just big enough for the pipe? Like 1 1/8"
I can't buy the fittings until Monday so plenty of time to ponder