Toilet vent option 2.
Bathroom vent pipe in attic.
Condensation can be a problem in an uninsulated attic so the homeowners trades resource center recommends installing rigid pipe with a minimum slope of 1 8 inch per foot toward the vent outlet to keep water away from the fan.
Just as drain pipes remove water and waste from your home the plumbing vent pipe also known as a plumbing air vent removes gas and odors it also allows fresh air into the plumbing system to help water flow smoothly through the drain pipes however no water.
The image below illustrates s typical bathroom with multiple plumbing vents.
The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.
The plumbing vent also known as a vent stack helps regulate the air pressure in your plumbing system.
Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.
Vent your bath and kitchen exhaust fans through the roof through a special roof hood.
You may need another elbow of any degree to position the vertical vent where you want it.
This system is quiet too.
If the vent wall is parallel to the drain pipe install a 45 degree reducing y and a street elbow to point toward the wall.
Next make sure you have one of the new roof exhaust vents on the roof and properly sealed.
Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out.
In some localities the building department may require the use of r 3 to r 8 fiberglass pipe insulation to control condensation and even when it isn t required it s.
What is a plumbing vent.
To help you better visualize what these piping systems look like we thought it might help to incorporate a plumbing vent diagram.
Because the fan is in the attic you ll hardly hear it.
You mount a switch in each bathroom.
This article series explains why bathroom vent fans are needed and describes good bath vent fan choices necessary fan capacity and good bath vent fan and vent duct installation details.
Bath vent fan installation building codes bath vent fan troubleshooting bath vent fan repair.
I see many questions about leaking bath exhaust vents.
Most bath vents for homes are 3.
Look for the special fans starting at 160 at heating cooling equipment.
I recommend replacing the vent pipe with insulated vent pipe.
A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan.
A single exhaust exits through the roof figure a.
Toilet vent option 3.
We explain how to install bathroom exhaust fans or vents the vent ducting.
This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space.
The horizontal vent pipe runs right next to the closet bend.
Next make sure it is securely fastened on both ends of the pipe.
