You should be able to see the top of them.
New roof leaking at the ridge vent.
No you should not need to replace your ridge vent when replacing your roofing tiles if your ridge vent is still in good working order.
You can then draw fresh air into the underside of the vent which freshens the environment of the home.
Slightly pull the ridge vent upward and look for the fasteners.
It is possible to remove the ridge vent safely have the work done to your roofing tiles and then fit your old ridge vent back in place.
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.
This could be caused by humidity in the roof that is not able to escape.
Sun exposure and heat especially during the summer can cause the rubber boot to crack creating the space for water to leak in.
When the roof vent is leaking the actual cause must be identified first.
The rain will eventually make its way into the attic.
Shingles cover the area where the ridge vent is fastened down.
While you are on the roof walk along the entire length of the ridge vent.
Typically ridge vents do not leak.
However improper installation can lead to leaky vents.
Without sealant rain will access the space between the shingle and vent.
Repairing leaking ridge vents.
Installers may use the wrong nails to attach the vent to the roof which allows it to loosen and be pulled off in high winds.
Vent pipe leaks during heavy rain can occur if you have cracks in your vent pipe boot or flashing.
When your roof was installed each vent pipe received a flexible boot to seal water around the round surface of the vent pipe.
These boots vary in quality flexibility and longevity.
It would be in your best interest to contact a professional to come and inspect the damage and pinpoint the cause.
A bead of sealant should continuously run along the sections of the vent.
Check your soffit vents and ridge vents for any visible blockages.
Other causes of leaking roof vent are including broken seams on the metal base loosen nails and rusty metal collars around the vent pipe.
If you find any that are loose or if your ridge vent seems to easily disconnect itself from the roof.
The inside air moves through the ridge vest underneath the cap shingle to escape from the side and into the general atmosphere.
You should inspect your ridge vent annually.
You need to repair the problem immediately by replacing or re screwing the ridge vent to the roof.