Am I correct in reading the 2007 Florida Building Code (specifically section P3114) that air admittance valves (AAVs) are permitted to replace any external vent? What are people's thoughts on these devices? Seems like there are some people that really distrust them. Then again, there are lots of PEX haters, and I'm totally sold on it.
I'm about to add a laundry room far enough away from the existing vent system to require its own roof vent, and it's pretty appealing to me to avoid a roof penetration (a major headache source for me in the past).