R302.11.1.1

Section R302.11.1.1 is titled 'Batts or blankets of mineral or glass fiber' and covers requirements for fireblocking. The allowance for batts and blankets of mineral, glass fiber, or other approved nonrigid materials being used for compliance with a specific fireblocking arrangement is established. The purpose of this section is to slow the spread of fire, heat, and smoke.

The model shows a wall using parallel rows of studs with fiberglass batt insulation installed as horizontal fireblocking.