Unlike turbines this venting style does not have any moving parts.
Ridge vent vs traditional roof vent.
Sounds t me like the roofing salesman is practicin his bs.
A ridge vent is similar to a screen and allows heat to escape up and out of the attic.
Their location roof venting works by letting in air from lower down on the roof like through a soffit vent and letting it out at a higher point in the roof.
List of the cons of roof ridge vents.
Roofing manufacturers warranties require a minimum of one square foot of ventilation for every 150sf of attic space for traditional systems but only one square foot of ventilation for every 300sf when the ridge vent system is used.
The winner by far is a concealed ridge vent over roof louvers.
What are the cons.
As a standard for my company we use cobra rigid vents platic style so i ve never put much thought into it well a couple years back i installed cobra rolled ridgevent on 1 3 of my folks roof without thinking when i ordered materials i asked for the rigid vent 150.
That is a good indication of the difference in efficiency.
Ridge vent versus traditional vents.
The effect of ridge vents for the roof depends upon the energy efficient nature of the structure.
I don t know of any evidence to the contrary.
Ridge vents are installed at the peak of the roof which is the highest point possible.
With a ridge vent system intake vents must be placed low on the roof usually in the eaves.
A ridge vent runs across the top of the roof s peak.
After tear off it came back to me that we have 60 of re usable rolled.
You ll be able to move air throughout the attic without the use of fans or turbines when enough space is given to this vent design.
Roofing manufacturers warranties require a minimum of one square foot of ventilation for every 150sf of attic space for traditional systems but only one square foot of ventilation for every 300sf when the ridge vent system is used.
Ridge vents do not always provide the proper ventilation in some homes.
Here are the two main advantages that ridge vents have over other types of vents.
Ridge and soffit venting provide a more natural and efficient air flow and provide a much higher percentage of actual ventilation.
However if you were only going to install 3 or 4 the turbines would be more affordable to you.
Years of research have proven that air vent ridge vents combined with under eave venting are the most efficient and effective system you can install.
But the ridge vent maintenance and running cost is a lot less than for turbines when.