The original owners of this "cabin" did some very "unique" plumbing. The waste water exaust pipe comes out the side of the house from the crawl space. Every thing works fine and drains great though. Except when it gets below -10f. the exaust pipe starts to freeze up. This problem got worse when I put in a new washing machine. I want to vent it up through the bathroom floor continuing through the roof. The pipe would be exposed in the bathroom in a corner. Would this work considering the tempurature difference surrounding the pipe in the bathroom?