How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manufactured and modular homes
Can a plumbing vent terminate in the attic?
Thursday, August 6, 2020
Yes, a plumbing vent can terminate in the attic. But it must have an air admittance valve at the termination to keep noxious sewer gas fumes from rising into the attic. An air admittance valve lets air into the plumbing vent pipe when needed to allow the drains to flow properly, then closes to keep sewer gas from escaping. Also, the air admittance valve must be at least 6-inches above the attic insulation, and there must be at least one other vent that extends outdoors.
See our blog post What are the code requirements for plumbing vent terminations? for more details on plumbing vent requirements.
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
Here’s links to a collection of our other blog posts about PLUMBING PIPES:
• How can I protect my pipes to keep them from bursting during a hard winter freeze in North Florida?
• Can galvanized steel pipe still be used for new water lines in a house?
• How can I tell if I have cast iron pipes in my house?
• Why can't a sanitary tee be used for a horizontal-to-horizontal drain pipe connection?
• What is the difference between green and white sewer drain pipes?
• Is a washing machine drain hose required to be secured at the standpipe?
• What are the abandoned pipes sticking out of the wall in my house?
• What are the code requirements for plumbing vent terminations?
• What are the code requirements for layout of drain piping under sinks?
• What causes a gurgling sound when a bathtub or sink drains?
• What is a "combination waste and vent" in a plumbing system?
• What is a galvanized nipple?
• What are the pipes sticking out near my water valves?
• How do you accurately find a broken water pipe leak under the floor slab?
• What is the difference between water pipe and sewage (waste) pipe?
• Are plastic pipes (PVC, CPVC, and PEX) safe for drinking water?
• Is a hot water faucet handle required to be on the left?
• What's that powdery crust on the pipe connections at the water heater?
Visit our PLUMBING page for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles.
Click Below
for Links
to Collections
of Blog Posts
by Subject
Top 5 results given instantly.
Click on magnifying glass
for all search results.
Search
This
Site
Buying a home in North/Central Florida? Check our price 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.
