VENTING 101 – Air Admittance Valve Pros and Cons

Section Showing AAV

During maintenance you’ll want to be assured the top of the vent is kept open. A blocked vent can be caused by leaves, dead animals and ice dams (in very cold climates). Another “not-so-common” way

Painting HardieSoffit Panels and Attic Air Balance

Picture of HarkieSoffit

Net free venting requirements for residential construction states that we should provide a “balanced” air flow for attic ventilation. 50% of the air needed to cool your attic should enter at the edge of the roof…down near the windows. 50% of the required openings should be as high as

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