At a glance: Completed October 12, 2026: a full tear-off and replacement on Shadowbrooke Drive, Troy, IL. Shingle: GAF Timberline HDZ. Size: 29.67 squares. Underlayment: synthetic underlayment across the full deck. Office: St. Louis, 314-429-6000.
Our crew finished a 29.67-square roof, the size of a larger ranch or a modest two-story on Shadowbrooke Drive in Troy, IL on Monday, October 12. Troy is a Madison County city along I-55/70 east of Collinsville. Crews closed it out on October 12, 2026. On top: GAF Timberline HDZ. Underneath: synthetic underlayment across the full deck plus ice and water membrane where water collects.
Project details
| Location | Shadowbrooke Drive (Troy, IL 62294) |
|---|---|
| Completed | Monday, October 12, 2026 |
| Opened to completed | 21 days |
| Roof size | 29.67 squares (about 2,967 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 | STL092126033 |
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 at the eaves and rakes. It’s a purpose-made starter strip with factory adhesive, not cut-up field shingles, so the edges stay sealed.
- GAF Hip & Ridge on the hips and peak. Matching cap shingles made for the job, not field shingles cut into pieces.
- 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.
The crew behind this roof
This was a St. Louis office job, installed by John Beal Roofing. From the day the job was opened (September 21, 2026) to the day the crew finished (October 12, 2026) took 21 days. Family-owned since 1947, we back every replacement with a lifetime workmanship warranty. If a storm opens up a roof at 2 a.m., someone answers the phone. See 24/7 emergency service.
Need a roof in Troy?
Free inspection, documented slope by slope, no obligation. St. Louis office: 314-429-6000
Common questions about this job
What shingle was installed on this Troy roof?
GAF GAF Timberline HDZ, over synthetic underlayment across the full deck. The full system is in the project details table above.
How long did this project take from start to finish?
21 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.
Was ice and water shield installed?
Yes. Ice and water membrane went in the valleys and along the eaves, the spots where water backs up or collects first.
How big was the roof on Shadowbrooke Drive?
29.67 squares, or about 2,967 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.
Who do I call about a roof in Troy?
Our St. Louis office at 314-429-6000. A person answers 24 hours a day, including nights, weekends and holidays.