Re: Rain Caps On Venting Pipes
Plumbing vents do not require caps, as the joins SHOULD be sealed from the ground to the top of the vent. Tight, leak-proof joints are a must so that sewer gases can't escape into living space, not only for odor reason, but also noxious gasses.
If the joints in the pipes are leaking, then they need to be repaired properly. As for the roof flashings around the vents, you don't have to change the flashings, you can simply purchase new rubber rings. The rings slide down over the vent and over the existing rubber of the flashing. It's as easy as that. If and when you have the roof replaced, then the vent flashings should also be replaced regardless of the additional ring you install to cure your current problem.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!