At a glance: John Beal Roofing replaced the roof on Hoover Court in Alton, IL 62002, finishing September 16, 2026. 22.67 squares of Owens Corning OC Supreme, installed over synthetic underlayment across the full deck. Handled by our St. Louis office (314-429-6000).
On Hoover Court in Alton, IL (a Madison County river city on the bluffs above the Mississippi, with a deep stock of older homes), the crew tore off and replaced a mid-size 22.67-square roof, roughly 2,267 square feet. It was the second of 2 roofs we've finished on Hoover Court in the past few months. The system: synthetic underlayment across the full deck, ice and water membrane in the valleys and at the eaves, and OC Supreme on top.
Job specs
| Location | Hoover Court (Alton, IL 62002) |
|---|---|
| Completed | Wednesday, September 16, 2026 |
| Opened to completed | 21 days |
| Roof size | 22.67 squares (about 2,267 sq ft) |
| Scope of work | Full tear-off and roof replacement |
| Shingle | Owens Corning — OC Supreme |
| 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 | STL082626001 |
Choosing a color for your own roof? Browse every Owens Corning Supreme color on a whole-house preview in our OC Supreme color selector.
The roofing system on this house
Owens Corning Supreme is a traditional three-tab shingle, a flat, uniform look that suits smaller sections, outbuildings and homes that were originally built with three-tab. 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:
- 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 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.
- OC ProEdge 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
This was a St. Louis office job, installed by our own crew, not subcontracted out. The job was opened in our system on August 26, 2026 and the crew finished on September 16, 2026, 21 days later. 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 Supreme, over synthetic underlayment across the full deck. The full system is in the project details table above.
Does John Beal Roofing work in Alton, IL?
Yes. Alton is served by our St. Louis office, and we've completed 16 roof replacements there in the last few months alone. Call 314-429-6000 for a free inspection.
How big was the roof on Hoover Court?
22.67 squares, or about 2,267 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?
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.
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 Alton?
Our St. Louis office at 314-429-6000. A person answers 24 hours a day, including nights, weekends and holidays.