Is there a size (diameter) of roof vent pipe that requires a (rain) cap?
Oftentimes a sink or toilet vent pipe will be 4" or more.
When does a roof vent pipe require a cap?
Mike
Is there a size (diameter) of roof vent pipe that requires a (rain) cap?
Oftentimes a sink or toilet vent pipe will be 4" or more.
When does a roof vent pipe require a cap?
Mike
Attic vents need caps and plumbing vents do not.
Keep studying and it will all click.
Mike,
Generally speaking, all roof penetrations need a cap EXCEPT plumbing. All plumbing vents (should) go to sewer/septic. Follow the vent pipe down… where does it go?
White PVC exhaust and supply for high efficiency boilers and furnaces don’t need them. The supply is usually turned downward though.