These can be ridge vents wind turbines or the flat vents your roofer wants to install.
Low profile turbine roof vents.
He told me that the turbine vents were useless.
A ridge vent runs across the top of the roof s peak.
Galvanized steel construction helps provide for strength and durability.
Also if i still had turbine vents they would cause shading on my solar array.
The installation of a turbine vent is nearly identical to a static vent.
While i did put in the low profile vents if i had the choice to do again i would get the full length ridge vent as my attic still gets toasty in the summer.
This is most effective in areas where winds average at least five miles per hour or otherwise will not offer the most effective reliable source of venting.
It is compatible with 3 or 4 ductwork and includes a 3 to 4 adapter for convenience.
A turbine vent draws air from inside the attic as wind turns the turbines.
How to install turbine vents.
Picture above shows both roof vents a rotary turbine vent on the left and an aura gravity ventilator on the right with curb mount flanges a roof turbine can be made of galvanized steel that rusts as shown above.
Unlike turbines this venting style does not have any moving parts.
A turbine has a series of vanes that spin as wind passes through them.
Internally braced units feature a low profile design that hugs the roofline.
Externally braced turbine attic ventilators can enable perfect alignment.
Attic must have 5 sq.
Good attic ventilation is important for preventing ice dams in the winter.
The rvk1a steel roof cap kit is an the rvk1a steel roof cap kit is an easy to install vent for ventilation fans bath rec room home gym etc.
Recommended low profile vents.
Ft of vent space half dedicated for air intake in the soffits and the other half for exhaust on the roof.