Material comparison
Asphalt vs metal roofing
General info only. Check with a licensed pro and your local building department.
If in doubt, stop and call a licensed professional.
From the U.S. Department of Energy and shingle makers. Hail matters here.
| Topic | What the source says | Source |
|---|---|---|
| Cool shingles | DOE: cool asphalt shingles reflect more sunlight than standard dark shingles. | Official page checked 2026-10-30 |
| Cool roofs | DOE Guide to Cool Roofs: reflective roofs stay cooler and can lower cooling energy use. | Official page checked 2026-10-30 |
| Hail rating example | GAF spec sheet: Timberline HDZ shingles are rated UL 2218 Class 3 for impact. | Official page checked 2026-10-30 |
| Class 4 example | Owens Corning lists Duration FLEX as an impact-resistant (Class 4) shingle. | Official page checked 2026-10-30 |
| Wind warranty | GAF WindProven: a 15-year wind warranty when installed with required GAF accessories. | Official page checked 2026-10-30 |
Not confirmed yet
- Unknown Metal roof hail and dent warranty terms (no maker page checked yet).
- Unknown Denver price per square for either (no published source).
- Unknown Whether your insurer gives a discount for Class 4 (ask your insurer).
Warranty terms are the maker's and change; read the current warranty for the exact product before you buy.