Because the shingles are covering the inner roofing area where the fasteners of the ridge vent go.
Roof ridge vent leaking.
For that reason many times a ridge vent leak may occur.
A improper installation or b some roof feature which is directing the wind and rain into that part of the vent.
Another problem that can lead to leaking roof ridge vents involves sealant.
Many times these fasteners aren t properly secure.
While this is a real concern all vents that you can install for cooling your attic will have some amount of wear and tear.
One potential source of a leak is a ridge vent.
The rain will eventually make its way into the attic.
When your roof was installed each vent pipe received a flexible boot to seal water around the round surface of the vent pipe.
A bead of sealant should continuously run along the sections of the vent.
A ridge vent is typically the last structure that will ever be placed on your roof during a roofing installation.
Sun exposure and heat especially during the summer can cause the rubber boot to crack creating the space for water to leak in.
These boots vary in quality flexibility and longevity.
Roof leak detection can be as tricky as being a private eye.
Other causes of leaking roof vent are including broken seams on the metal base loosen nails and rusty metal collars around the vent pipe.
The ridge cap is a portion of the roof that tends to leak a lot.
Repairing leaking ridge vents.
We describe methods to cure a roof that leaks at the ridge vent and we list products specifically designed to resist stormwater entry at ridge vents.
The leaking tends to be concentrated so it looks serious but in reality it is a very simple and common fix.
If the fasteners are not secure a strong wind may pull up the ridge cap and let rain or snow get into the vent causing it to leak.
Vent pipe leaks during heavy rain can occur if you have cracks in your vent pipe boot or flashing.
This article describes the cause of leaks into buildings at the ridge vent on both steep and lower slope roofs during heavy winds wind blown rainy conditions or hurricanes.
When the roof vent is leaking the actual cause must be identified first.
Without sealant rain will access the space between the shingle and vent.
With most ridge vents being made out of durable plastic after a long time from heating and cooling this plastic can start to crack and degrade.