Hail, wind and the cost of open exposure
Newer neighborhoods have younger trees, so roofs here take the full force of summer thunderstorms. Wind can lift shingle edges, and hail can bruise asphalt so the granules loosen and the mat underneath weakens. Damage from hail is often invisible from the ground and shows up months later as leaks or early wear.
Commercial roofs face the same storms plus drainage challenges. Large flat areas collect water if drains clog, and winter snow drifts against parapets and rooftop equipment. Heavy wet snow adds weight, and a thaw can send meltwater to places the design did not expect. Regular checks before winter and after the spring thaw catch these problems early.
