Find quality vent pipe flashing online or in store.
How to seal reaeal pipe boot on roof.
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.
Why do vent pipes leak.
Even if the hole matches the size of the pipe perfectly there will still be gaps.
Now slide the boot down and make sure there is enough caulk to have a seamless circle all the way around.
As mentioned there s a rubber boot that serves as a seal to prevent water from leaking in.
The flashing of the vent pipes.
The slide the boot down the pipe and leave it about 3 above the roof.
Vent pipes are roof penetrations so holes are created.
Roof water damage repair small hole in roof leaking metal roof how to stop.
These gaps should be sealed.
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.
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.