All residential plumbing fixtures need to be protected by a plumbing vent.
Pipe sticking out of roof.
This is true whether the roof is sloped or flat but the type of pipe boot depends on the type of roof.
No matter the type is a pipe boot becomes weathered or damaged a roof leak can occur.
The lead flashing is the first picture.
It actually slips over the pvc pipe and then the lip of the flashing curls over the pvc pipe.
If you really can t stand the sight of these pipes sticking out of your house consider a dormant winter plant so that it does not get harmed by the furnace exhaust.
Without that vent and there s one connected to every drain in your house the water leaving your sinks showers and toilets would slow and hiccup and not have smooth operation.
They fit loosely usually thats why it seems like they aren t.
There are pipe boots installed on plumbing vent pipes that penetrate through roofs.
The hole in the roof where the vent pipe penetrates is usually weatherproofed with a jacket made of lead called a boot the malleable lead is bent over the pipe rim at the top and slipped under the roofing at the base.
Those white plastic pvc pipes jutting out of your roof have little to do with your roof and a lot to do with your home s plumbing system.