Originally Posted by
Jerry Peck
From the IRC (and other plumbing codes).
- P3103.1 .......IF the roof is used for "weather protection" only (not counting when someone goes up to do repairs or cleaning on the roof - the roof's purpose in those cases is still "weather protection") then the vent terminal must be at least 6" high above the roof, plus whatever additional height is required by the AHJ for snowloading so the vent is never buried in snow.