A complete roof replacement for a home in Vernon, Texas using a Class 4 — the highest — impact-rated shingle system. The old roof was torn off, the deck inspected, and synthetic underlayment and impact-resistant shingles installed for maximum protection in hail country.
Scope of Work
- Tear-off & deck prep
- Synthetic underlayment
- Class 4 impact-rated shingles
- Flashing & cleanup
How This Project Came Together
This Vernon roof replacement went in with a Class 4 impact-rated shingle system — the highest rating a roofing material can earn — over a full tear-off rather than layered on top of the old roof. The scope covered the whole roof: removing the existing shingles, prepping the deck underneath, and installing new underlayment ahead of the impact-rated shingles.
The crew tore off the old roof and inspected the deck before installing synthetic underlayment across the full surface. Class 4 impact-rated shingles went down over that underlayment, followed by flashing at penetrations and edges and a full cleanup once the roof was complete.
Challenge
Roofing material earns its impact class through UL 2218, a test that drops steel balls of increasing size onto the material and checks the underside for cracking afterward — four classes exist, and Class 4 requires withstanding the largest steel ball in the test without fracturing. Installing a Class 4 shingle correctly matters as much as the shingle itself: fastening pattern and underlayment both have to be right, or the impact resistance built into the shingle doesn't carry through to the finished roof. Hail is a real, recurring risk in this part of Texas, which is exactly what a Class 4 rating is built to resist.
Solution
The crew tore the old roof off completely rather than layering over it, so the deck could be inspected and the new system started from a clean, sound surface. Synthetic underlayment went down across the full roof ahead of the Class 4 shingles, and the shingles were installed to the fastening specifications that rating depends on, with flashing detailed at every valley, vent, and edge.
Result
The finished roof carries the highest impact rating a shingle system can hold, installed from a full tear-off rather than a shortcut that would undercut the rating on paper. A Class 4 roof is built to resist hail damage better than lower-rated shingles — it isn't a guarantee against damage or a promise of a lower insurance premium, but it's a meaningfully tougher roof for a region that sees its share of hail.
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