Problems when roof has no overhang.
No vent in attic.
Without baffles blinders that prevent outside air from crossing over the vent a ridge vent may create almost no ventilation at all.
Static roof line vents are effective for ventilation but generally aren t recommended due to issues with leaks.
If you re wondering how studor vents work after the toilet is flushed the water flows down the drain resulting in negative pressure.
For proper ventilation it isn t enough for air to simply get into your attic.
This creates a natural air flow by drawing in the air from outside pushing it up and out through the vent at the top of the house.
Gable vents may circulate air through only a small percentage of your attic.
The design of many older houses omits eaves which maximizes the amount of sunlight.
Normal vented air likes to enter the attic lower down near the bottom third of the attic and as it passes through it will exit higher up near the top third of the attic space.
How to vent an attic with no eaves the function of soffit vents.
This negative pressure causes the vent to open and let in enough air to relieve the pressure.
Studor vents are a very popular kind of air admittance valve that works really well.
The most common way to add ventilation to an attic is by installing air intakes in the soffits and putting an outlet at the gable of the house.
For an attic without soffit vents you may have the option to use gable vents instead.
This is called passive ventilation.