At a glance: John Beal Roofing replaced the roof on College Avenue in Alton, IL 62002, finishing September 25, 2026. 15.33 squares of Owens Corning OC Duration, installed over synthetic underlayment across the full deck. Handled by our St. Louis office (314-429-6000).
Our crew finished a 15.33-square roof (1,533 square feet), about what a standard ranch house carries on College Avenue in Alton, IL on Friday, September 25. Alton is a Madison County river city on the bluffs above the Mississippi, with a deep stock of older homes. It was one of 5 roof replacements our crews completed in Alton in September 2026. OC Duration went over synthetic underlayment across the full deck, with ice and water membrane at the eaves and valleys.
Job specs
| Location | College Avenue (Alton, IL 62002) |
|---|---|
| Completed | Friday, September 25, 2026 |
| Opened to completed | 25 days |
| Roof size | 15.33 squares (about 1,533 sq ft) |
| Scope of work | Full tear-off and roof replacement |
| Shingle | Owens Corning — OC Duration |
| Underlayment | JBI Synthetic |
| Ice & water | Alco Ice & Water |
| Starter course | OC Starter |
| Hip & ridge | OC ProEdge Hip & Ridge |
| Ventilation | Lomanco Omni Roll ridge vent |
| Warranty | Lifetime workmanship warranty |
| Project number | STL083126033 |
Want to see what OC Duration looks like on a whole house? Try every color in our OC Duration color selector.
What went on this roof
The feature that defines Owens Corning Duration is SureNail Technology, a tough woven fabric band in the nailing zone that the fasteners go through for better hold. The shingle is only the top layer. Here’s the full system that went on this house:
- A full layer of synthetic underlayment. It’s the backup water barrier under the shingles, and it holds up to foot traffic and wind far better than paper felt.
- 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.
- OC 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.
- OC ProEdge Hip & Ridge cap. Pre-formed cap that seals the hips and ridge.
- Lomanco Omni Roll ridge vent. Continuous exhaust at the peak. Together with the soffit intake, it moves heat and moisture out of the attic.
Who installed it
This was a St. Louis office job, installed by our own crew, not subcontracted out. From the day the job was opened (August 31, 2026) to the day the crew finished (September 25, 2026) took 25 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 Alton?
Free inspection, documented slope by slope, no obligation. St. Louis office: 314-429-6000
FAQ about this roof
What shingle was installed on this Alton roof?
Owens Corning OC Duration, over synthetic underlayment across the full deck. The full system is in the project details table above.
What kind of ventilation went on this roof?
A Lomanco Omni Roll ridge vent along the peak. Paired with soffit intake, it lets hot, moist attic air escape.
How big was the roof on College Avenue?
15.33 squares, or about 1,533 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?
25 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.
Who do I call about a roof in Alton?
Our St. Louis office at 314-429-6000. A person answers 24 hours a day, including nights, weekends and holidays.