What should be installed to prevent insulation from blocking eave ventilation openings?

To prevent insulation from blocking eave ventilation openings, baffles are the appropriate choice. Baffles are installed in attic or roof spaces to create a barrier that directs airflow and ensures that air from the eaves can move freely into the attic. Their design helps maintain an uninterrupted airflow path, preventing insulation from spilling into ventilation areas, which is crucial for proper attic ventilation. This allows for adequate air intake, helping to regulate temperature and moisture levels in the attic, ultimately contributing to the overall efficiency of the home’s ventilation system.

Other options, while potentially useful in different contexts, do not specifically address the issue of maintaining airflow through eave vents. Filler boards, supports, and straps may be used in various structural applications, but they do not serve the targeted function of ensuring that insulation remains clear of ventilation openings as effectively as baffles do.