At a glance: In short: 21.33 squares, GAF Timberline HDZ, synthetic underlayment across the full deck, ridge vent, lifetime workmanship warranty. Palomino Drive, Jerseyville, IL 62052, done October 29, 2026 by our St. Louis crew (314-429-6000).
This one was a 21.33-square roof, right around the size of a typical single-story ranch on Palomino Drive in Jerseyville, IL, the Jersey County seat, north of Alton in Illinois river country. We replaced 1 other roof in ZIP 62052 that same month. On top: GAF Timberline HDZ. Underneath: synthetic underlayment across the full deck plus ice and water membrane where water collects.
What the work order shows
| Location | Palomino Drive (Jerseyville, IL 62052) |
|---|---|
| Completed | Thursday, October 29, 2026 |
| Opened to completed | 28 days |
| Roof size | 21.33 squares (about 2,133 sq ft) |
| Scope of work | Full tear-off and roof replacement |
| Shingle | GAF — GAF Timberline HDZ |
| Underlayment | JBI Synthetic |
| Ice & water | Ice & water membrane |
| Starter course | Factory starter |
| Hip & ridge | GAF Hip & Ridge |
| Ventilation | Lomanco Omni Roll ridge vent |
| Warranty | Lifetime workmanship warranty |
| Project number | STL100126029 |
Want to see what GAF Timberline HDZ looks like on a whole house? Try every color in our GAF Timberline HDZ color selector.
What went on this roof
Timberline HDZ is GAF's architectural shingle with a wide StrikeZone nailing area and LayerLock Technology holding the two layers of the shingle together, so fasteners land where they hold best. People shop for the shingle, but what’s underneath it and how the edges are finished decide how long the roof lasts. On this job:
- Synthetic underlayment over the whole deck. It’s stronger and more tear-resistant than felt, and it lies flat if weather rolls in during the tear-off.
- Ice and water shield in the valleys and along the eaves. Those are the two places a Midwest roof takes on water first, from ice dams in January and heavy runoff in spring storms.
- Factory starter strip along every edge. The first course is where wind gets under a roof. A factory starter with its own sealant line locks it down.
- GAF Hip & Ridge cap. Pre-formed cap that seals the hips and ridge.
- Lomanco Omni Roll ridge vent. It runs along the peak and lets hot, damp attic air escape. That protects the decking and keeps shingles from baking from below.
Who installed it
John Beal Roofing crews out of our St. Louis office installed this roof. The job was opened in our system on October 1, 2026 and the crew finished on October 29, 2026, 28 days later. We’ve been family-owned since 1947, and every roof comes with our lifetime workmanship warranty on top of the manufacturer’s material coverage. If a storm opens up a roof at 2 a.m., someone answers the phone. See 24/7 emergency service.
Need a roof in Jerseyville?
Free inspection, documented slope by slope, no obligation. St. Louis office: 314-429-6000
FAQ about this roof
What shingle was installed on this Jerseyville roof?
GAF GAF Timberline HDZ, over synthetic underlayment across the full deck. The full system is in the project details table above.
How big was the roof on Palomino Drive?
21.33 squares, or about 2,133 square feet of roof surface. A roofing square is 100 square feet. Roofs are measured and priced that way, not by the square footage of the floor plan.
How long did this project take from start to finish?
28 days from the day the job was opened to the day the crew finished. Most of that time is scheduling, material ordering and any insurance paperwork. The tear-off and install usually take a day or two on a house this size.
Does John Beal Roofing work in Jerseyville, IL?
Yes. Jerseyville is served by our St. Louis office, and we've completed 17 roof replacements there in the last few months alone. Call 314-429-6000 for a free inspection.
Who do I call about a roof in Jerseyville?
Our St. Louis office at 314-429-6000. A person answers 24 hours a day, including nights, weekends and holidays.