[fisher12]

Is it wise to install an elbow on the plumbing roof vent pipe to prevent debris or snow from entering? My vent pipe is insulated in the attic to prevent condensation.

[mygirlsdad77]

Vents shall terminate straight up, no elbows above the roof line.

[speedball1]

Most people simply place wire screening mesh over the top of the pipe, However, they do make vent caps,(see image) Regards, Tom

[ballengerb1]

I would not worry about decris or snow unless you have trees directly overhead with very small leaves. An oak or maple leaf will never get inside a vent, most trees won't but I did find a dead bird in one vent some screening is the cheapest, most quick route