Attic Ventilation and Insulation

An effective attic ventilation system works in tandem with proper insulation contractor to regulate home temperatures, prevent moisture accumulation and extend the lifespan of your roof. A well-ventilated attic is one of the most cost-effective energy-saving solutions for your home.

In homes with vented attics, air from conditioned spaces enters the attic space and rises by natural convection to cooler attic surfaces. This reduces the load on air conditioning systems and the temperature of the roof deck, and keeps moisture from damaging shingles or causing wood rot. It also helps to prevent ice dams in cold climates as snow melts and runs down the roof, cooling and freezing along the edge of the roof at the eaves.

The Connection Between Attic Ventilation and Insulation

Without an adequate ventilation system, warm attic air can cause the ceiling below to sag or deflect, and excessive moisture can contribute to mold, mildew, and rot in the rafters and walls of the living space above. Air leaks and penetrations like non-airtight recessed lights can add to the problem by forcing warm, moist air from the conditioned living spaces into the attic.

A properly functioning ventilation system promotes continuous airflow from the soffit vents (located under the eaves), through baffles in the attic, to the ridge or gable vents, where it escapes through a series of exhaust vents. Ensure that your soffit and gable vents are clear of obstructions, including clogged insulation, and install baffles wherever you have soffit vents. This is best done by a professional, who can also provide expert recommendations and new vent systems for your attic’s size, layout, and climate control issues.

Noble Insulation Inc
1201 Pennsylvania Ave Unit D, Richmond, CA 94801
650-686-2965