The impact from a hailstone can cause damage to the shingle by causing excessive granular loss. This can lead to exposed matting beneath the shingles, and eventually a leaky roof. Hail can also affect the siding, gutters, and other soft metals on your home by causing dents or holes in these surfaces.
Wind can cause missing, broken, lifted, or cracked shingles, which compromises the integrity of your roof. Any of these issues can also eventually lead to leaking which may result in interior water damage, mold, or rotting wood. Wind can also cause damage to your siding or other structures around your home.