Comparing Exhaust Vents

Mar 16, 2020 | Roofing

Picking the Right Vent for your Project

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Did you know that to properly exhaust ventilate a gable roof that has approximately 1,500 square feet of attic floor space it would take: 

  • 5 wind turbines (14″insizeeachproviding132squareinchesofnetfreeareaairflow);or

  • 15rooflouvers (eachproviding50squareinchesofnetfreearea);or

  • 42linearfeetofridgevent (providing18squareinchesofnetfreeareaperlinearfoot).

Andofthoseoptions,onlyridgeventsdelivera continuous flowofairfromlowonthedeck(eave)tohigh(peak)alongthe entirehorizontalpeakoftheroof.That’sbecauseonlyridgeventsareinstalledend-to-end,non-stopalongtheroofpeak.Infact,nootheratticexhaustventcategorycandeliverthis,includingpowerfans,becausenoneofthembesidesridgeventsareinstalledinterruption-freeontheroof.Everyothercategoryofexhaustbydesignleavesgapsbetweenvents.Wheretherearegapsbetweenvents,thereislittletozeroairflow.

Let’stalk curbsideappeal.Whatdoyouthinkhomeownerswouldprefertolookat-evenonthebacksideoftheirroof-anytimetheylookattheirroof:abunchofprotrusionscreatedbymultipleindividualventsorstreamlinedridgeventswithmatchingshinglesinstalledontoptoblendinnicelywiththeroof’sappearance?Ridgeventsdeliverprovenperformanceandbeautifullooks.Considerthemoneveryroofthathassufficientridgelength.

AirVent’sfamilyofridgeventsincludestheirflagship ShingleVent®II whichfeaturesanexternalwindbaffle(tocreatelowpressureabovethevent’sopeningsenhancingitsairflowwhiledeflectinganyweathercarriedbythewind)andaninternalweatherfilter(foradditionalprotectioninharshwinterconditions). 

ContactGreenawaltRoofingCompanytodayformoreinformation,ortoscheduleyourFREEestimateat717-898-6000or610-779-3111.

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