Good attic ventilation is important for preventing ice dams in the winter.
Cool attic turbine.
A small 12 inch diameter turbine vent with a constant wind speed of 5 miles per hour mph can remove 347 cubic feet of air per minute cfm from the attic space.
These can be ridge vents wind turbines or the flat vents your roofer wants to install.
Unlike turbines this venting style does not have any moving parts.
A ridge vent runs across the top of the roof s peak.
Intake vents located at the lowest part of the roof under.
A single 14 inch diameter turbine vent that is subjected to 15 mph winds can expel up to 1 342 cfm of air.
Find roof turbine vents at lowe s today.
Cool air in hot air out attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.
Attic must have 5 sq.
Get free shipping on qualified roof turbines or buy online pick up in store today in the building materials department.