At a glance: John Beal Roofing replaced the roof on Grove Road in Bunker Hill, IL 62014, finishing October 6, 2026. 24.00 squares of Owens Corning OC Duration, installed over two layers of synthetic underlayment, a heavier spec than our standard single layer. Handled by our St. Louis office (314-429-6000).
A mid-size 24.00-square roof, roughly 2,400 square feet on Grove Road in Bunker Hill, IL, a Macoupin County city in southwestern Illinois, north of Alton. We replaced 1 other roof in ZIP 62014 that same month. The system: two layers of synthetic underlayment, a heavier spec than our standard single layer, ice and water membrane in the valleys and at the eaves, and OC Duration on top.
What the work order shows
| Location | Grove Road (Bunker Hill, IL 62014) |
|---|---|
| Completed | Tuesday, October 6, 2026 |
| Opened to completed | 104 days |
| Roof size | 24.00 squares (about 2,400 sq ft) |
| Scope of work | Full tear-off and roof replacement |
| Shingle | Owens Corning — OC Duration |
| Underlayment | JBI Synthetic, double layer |
| Ice & water | Alco Ice & Water |
| Starter course | IKO Starter |
| Hip & ridge | Owens Corning Hip & Ridge |
| Ventilation | Lomanco Omni Roll ridge vent |
| Warranty | Lifetime workmanship warranty |
| Project number | STL062426022 |
Want to see what OC Duration looks like on a whole house? Try every color in our OC Duration color selector.
Materials installed, layer by layer
Owens Corning TruDefinition Duration uses SureNail Technology, a woven strip across the nailing zone that gives the fasteners something to grab and helps the shingle stay down in high wind. Every one of our replacements is a system, not just shingles. On this roof, from the deck up:
- Two layers of synthetic underlayment. That’s double our standard spec. The second layer adds another barrier under the shingles.
- Ice and water membrane at the eaves and in the valleys. This self-adhering layer goes where water backs up: behind ice dams at the eaves and where two slopes meet.
- IKO 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.
- Owens Corning 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 did the work
This was a St. Louis office job, installed by John Beal Roofing. From the day the job was opened (June 24, 2026) to the day the crew finished (October 6, 2026) took 104 days. Family-owned since 1947, we back every replacement with a lifetime workmanship warranty. We answer the phone around the clock, storms included. See 24/7 emergency service.
Need a roof in Bunker Hill?
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 Bunker Hill roof?
Owens Corning OC Duration, over two layers of synthetic underlayment, a heavier spec than our standard single layer. The full system is in the project details table above.
Was ice and water shield installed?
Yes. Alco Ice & Water membrane went in the valleys and along the eaves, the spots where water backs up or collects first.
How long did this project take from start to finish?
104 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.
How big was the roof on Grove Road?
24.00 squares, or about 2,400 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.
Do you publish the customer's address?
No. We publish the street name, city and ZIP so you can see we really work in your neighborhood. We leave off the house number and never publish a customer's name.
Who do I call about a roof in Bunker Hill?
Our St. Louis office at 314-429-6000. A person answers 24 hours a day, including nights, weekends and holidays.