Chuck B
sea-bee
Can I use thinwall (so that I can use 2 x 4 walls) for venting, and attach Sch. 40 lav / kitchen drains to the thinwall vent/drain, and then transition to Sch. 40 under the crawl space?
Guessing there must be some sort of way to transition these.
Guessing there must be some sort of way to transition these.