Because the shingles are covering the inner roofing area where the fasteners of the ridge vent go.
Metal roof ridge vent leaking.
The ridge vents are made out of molded plastic.
A damaged or leaking roof ridge vent has the potential to cause significant damage to your home.
Many times these fasteners aren t properly secure.
Another area very prone to leaks on a metal roof is the area around stack flashings.
Hvac vents air vents and plumbing pipes all have to vent and come through the metal roof.
Other causes of leaking roof vent are including broken seams on the metal base loosen nails and rusty metal collars around the vent pipe.
For that reason many times a ridge vent leak may occur.
Leaks typically occur at the exposed roofing nails used to nail down the ridge vent and worse leaks when wind blowing rain up roof overpowers the rather low about 1 high flange flashing along the lower edges of the.
And on occasion a hard driving rain with whipping wind will cause roof vents to leak water.
A ridge vent is typically the last structure that will ever be placed on your roof during a roofing installation.
When the roof vent is leaking the actual cause must be identified first.
This is a weekend place in the adirondacks so i can measure.
But the ridge vent maintenance and running cost is a lot less than for turbines when.
Roof leak detection can be as tricky as being a private eye.
If you were to install about 40 feet of roof ridge vent the area would span up to 10 turbines in this case 10 turbines would cost you substantially more to purchase and install.
However if you were only going to install 3 or 4 the turbines would be more affordable to you.
Thanks for your response and questions.
Given the most common causes is cracked or damaged rubber boot the most ideal solution is to remove it and replaced it with a new.
Incorrect fasteners missing end caps and a lack of roofing cement can all lead to the vent leaking.
Most air vent styles prevent direct intrusion of water.
What are the cons.
The ridge cap is a portion of the roof that tends to leak a lot.
I don t know the slope of the roof.
You may have a ridge vent turbine vent powered air vent or free air vent.
Stack flashings are the boots or flashings around pipes that come out of the metal roof.
If your home has an older style conventional metal ridge vent wind blown rain leaks in high wind areas are a well known topic.
The leaking tends to be concentrated so it looks serious but in reality it is a very simp.
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.
But some roof air vents sit fairly flat to the roof with a mushroom style hood and unprotected sides.
