Aluminum One-Way Vent

The primary reason for premature roofing failure is typically due to a lack of
adequate ventilation.  Even if every precaution is taken to assure a roof’s
integrity, with just the normal process of heating & cooling, there will be
some condensation, that with proper ventilation will be evaporated quickly
enough that there is minimal to no lasting effects.  On a typical sunny summer
day, roofing material underneath the top overlay can reach temperatures of 160
degrees!  Proper installation of an adequate number of roof vents allows
damaging heat a way to escape, reducing temperatures to harmless levels. 
Finally, and moreover, through the normal expanding and contracting that roofs
of all types must endure, is pressures that develop as an artifact of those
natural processes.  Proper ventilation reduces all these issues!  Each
Aluminum One-Way Vent features a vandal-proof cap to prevent wind-blown rain or
snow from entering.

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