How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manufactured and modular homes
Do plumbing vent pipes have to go through the roof by code?
Monday, February 7, 2022
The International Residential Code requires a minimum of one vent to the "outdoor open air" per residence (IRC P3114.7). The rest of the plumbing fixtures can be vented by an air admittance valve, island vent, or combination waste and vent.
Although the plumbing vent that terminates in outside air usually runs through the roof, the IRC allows other options—such as running up an outside wall—as long as the termination is away from doors, operable windows, any soffit vents, and a minimum of ten feet above ground. For full details, go to What are the code requirements for plumbing vent terminations?
To learn more about two of th venting alternatives, go to Is an air admittance valve (AAV) legal by code? and What is a "combination waste and vent" in a plumbing system?
• • • • • • • • • • • • • • • • • • • • • • • • •
Here’s links to a collection of some of our other blog posts about PLUMBING DRAINS AND TRAPS:
of Blog Posts
Top 5 results given instantly.
Click on magnifying glass
for all search results.
Buying a home in North/Central Florida? for a team inspection by two FL-licensed contractors and inspectors. Over 8,500 inspections completed in 20+ years. In a hurry? We will get it done for you.