Proper Attic Air Management is an often overlooked part of a home’s insulation and roofing system, but it’s crucial to regulating temperature and moisture in the attic. Improper ventilation can result in ice damming, heat blistering, mold growth and plywood delamination. Regular attic inspections and proper ventilation can help keep these issues in check.

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The main functions of attic venting are to lower attic temperatures, reduce cooling energy costs and remove excess moisture from the roof deck to minimize ice damming, mildew and mold growth and wood rot. Proper attic air management can also help maximize the life of a roof and prevent damage from heat blistering and shingle cracking.

 

Attic venting can be done through soffit, gable or ridge vents, with each method providing its own benefits. For a properly ventilated attic, there should be a balance between intake and exhaust. The 1:300 rule for attic ventilation states that for every 300 square feet of attic space, there should be 1 square foot of attic venting – split evenly between intake and exhaust – in place.

It’s also important to regularly inspect your attic for leaks, pest infestation and blocked vents. Make sure your attic vents are unobstructed and not blocked by insulation, debris or bird nests. You can test for ventilation with a smoke pencil, or simply inspect the attic area to ensure the proper airflow is taking place.