Exploring the Need for Attic Ventilation with Spray Foam Insulation
Whether attic ventilation is needed with spray foam depends on where it's applied. Foam installed on the attic floor requires ventilation above it; foam applied to the roofline typically does not. Certain roof types still require a 1-inch air gap regardless of foam placement to meet manufacturer warranty requirements. Spray foam is a commonly used type of insulation that maintains a comfortable temperature within homes. However, proper attic ventilation plays [...]



