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Attic ventilation is not needed when a proper vapor retarder is used on the attic floor. *
Even with a good vapor retarder, proper ventilation is essential to prevent damaging condensation. Eave vent openings at the roof overhang combined with a ridge vent, roof vent, or gable vents, are effective ways to create a positive movement of air in and out of the attic.
*Note: Check your local building codes on ventilation and moisture control requirements in your area.
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* By insulating and air sealing.
. Savings vary. Find out why in the seller’s fact sheet on R-values. Higher R-values mean greater insulating power.
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