With a ridge vent system intake vents must be placed low on the roof usually in the eaves.
Ridge vent vs traditional roof vent.
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.
Ridge vents are installed at the peak of the roof which is the highest point possible.
But the ridge vent maintenance and running cost is a lot less than for turbines when.
What are the cons.
Ridge vents do not always provide the proper ventilation in some homes.
Sounds t me like the roofing salesman is practicin his bs.
If it fits in your budget i would highly recommend upgrading as it will not only make your new roof look nicer it will save you money on cooling in the summer months.
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.
List of the cons of roof ridge vents.
Here are the two main advantages that ridge vents have over other types of vents.
Ridge vent versus traditional vents.
Ridge and soffit venting provide a more natural and efficient air flow and provide a much higher percentage of actual ventilation.
The winner by far is a concealed ridge vent over roof louvers.
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.
After tear off it came back to me that we have 60 of re usable rolled.
However if you were only going to install 3 or 4 the turbines would be more affordable to you.
I don t know of any evidence to the contrary.
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.
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.
Roof louvers aka roof cans which is best.
Unlike turbines this venting style does not have any moving parts.
That is a good indication of the difference in efficiency.
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.
The effect of ridge vents for the roof depends upon the energy efficient nature of the structure.