What is the minimum air space permitted at the location of vent between the insulation and the roof sheathing?

The minimum air space permitted at the location of the vent between the insulation and the roof sheathing is 1 inch. This requirement is crucial for ensuring that proper ventilation occurs in the attic space, which helps to manage moisture and prevent issues such as mold growth and deterioration of roofing materials.

The 1-inch air space allows for adequate airflow while still providing enough insulation coverage to maintain energy efficiency. Proper ventilation facilitates the movement of air, which is essential in maintaining a balanced temperature within the attic, thereby extending the lifespan of the roof and mitigating the risks associated with trapped moisture.

Understanding this minimum requirement is vital for contractors to comply with building codes and best practices in construction and home maintenance. This enables the provision of a healthy environment within the building while ensuring structural integrity.