The answer to 'underlayment hail damage' is that hail can cause significant damage to the underlayment on your roof, which is the protective layer installed beneath the shingles. Hail impacts can puncture, tear, or dislodge the underlayment, compromising its ability to protect your roof from water intrusion.
Common symptoms of hail damage to underlayment include visible holes, cracks, or missing sections. This can lead to leaks, water damage, and further deterioration of the roof system over time. In some cases, the entire underlayment may need to be replaced to restore proper protection and prevent future issues.