These gaps should be sealed.
How to seal reaeal pipe boot on roof.
The flashing of the vent pipes.
And begging to caulk around where the boot will go on the roof.
Plumbing vent pipes on house roofs are covered with a metal square of flashing and sealed with silicone caulking.
Why do vent pipes leak.
Vent pipes are roof penetrations so holes are created.
Place the new boot in the hole of the pipe and cut the boot on the line that touches the rim.
Oatey retro master roof 4 in x 8 in aluminum vent and pipe flashing american metal products 4 in x 14 75 in aluminum vent and pipe flashing.
This is why they re installed with a rubber boot.
How to seal a plumbing vent pipe on the roof.
Roof water damage repair small hole in roof leaking metal roof how to stop.
The slide the boot down the pipe and leave it about 3 above the roof.
As mentioned there s a rubber boot that serves as a seal to prevent water from leaking in.
On the boots if you have metal roof jacks with rubber boot seals on top with many models the rubber seals can be popped off and replaced without removing the metal part and there are also slip over boots that can just nestle down over the existing damaged boot and overlap the top of the jack but contractor would have to look at it and see then go get parts so if using a contractor.