Across the joists lay a.
Attic vent pipe leak.
When this happens the water can seep into the house along the pipe.
The water entry point may not always the same as where the water drips.
But make a big oval hole going down.
Vent humid air from kitchens and bathrooms to the outside instead of the attic to avoid this problem.
Here are four common problems that can cause water to leak around vent pipes.
Then you can easily cut the pipe lower in the old area and join it up with the new vent pipe.
Attic condensation is due to humid air leaking or vented into the attic.
Rusty and cracked collars around the vent pipe can allow rainwater to pool and eventually drip into.
The immediate thing to do is to contain dripping water from the leak.
Then cut the pvc lower down and properly connect it to the vent so no pressure is on any joints and is sloping downward.
Areas where leaks have.
Find the water entry point.
Typically vent pipe leaks occur at the collar surrounding the base of the vent pipe where it breaks through the surface of the roofing material.
Do not cut any supporting beams or rafters.
If the rubber boot is cracked rotted away or torn.
Make a temporary patch.