At a glance: In short: 20.33 squares, OC Duration, synthetic underlayment across the full deck, ridge vent, lifetime workmanship warranty. Clinton Street, Grafton, IL 62037, done October 7, 2026 by our St. Louis crew (314-429-6000).
Our crew finished a 20.33-square roof (2,033 square feet), about what a standard ranch house carries on Clinton Street in Grafton, IL on Wednesday, October 7. Grafton is a Jersey County river town where the Illinois River meets the Mississippi. Crews closed it out on October 7, 2026. OC Duration went over synthetic underlayment across the full deck, with ice and water membrane at the eaves and valleys.
Project details
| Location | Clinton Street (Grafton, IL 62037) |
|---|---|
| Completed | Wednesday, October 7, 2026 |
| Opened to completed | 69 days |
| Roof size | 20.33 squares (about 2,033 sq ft) |
| Scope of work | Full tear-off and roof replacement |
| Shingle | Owens Corning — OC Duration |
| Underlayment | JBI Synthetic |
| Ice & water | Ice & water membrane |
| Starter course | Factory starter |
| Hip & ridge | Owens Corning Hip & Ridge |
| Ventilation | Lomanco Omni Roll ridge vent |
| Warranty | Lifetime workmanship warranty |
| Project number | STL073026025 |
Choosing a color for your own roof? Browse every Owens Corning TruDefinition Duration color on a whole-house preview in our OC Duration color selector.
What went on this roof
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. 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.
- Self-sealing ice and water membrane where water concentrates. It seals around every nail driven through it, which matters in valleys and at the eaves.
- 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.
- Owens Corning 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
John Beal Roofing crews out of our St. Louis office installed this roof. The job was opened in our system on July 30, 2026 and the crew finished on October 7, 2026, 69 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. We answer the phone around the clock, storms included. See 24/7 emergency service.
Need a roof in Grafton?
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 Grafton roof?
Owens Corning OC Duration, over synthetic underlayment across the full deck. The full system is in the project details table above.
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.
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.
Does John Beal Roofing work in Grafton, IL?
Yes. Grafton is served by our St. Louis office, and we've completed 2 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 Grafton?
Our St. Louis office at 314-429-6000. A person answers 24 hours a day, including nights, weekends and holidays.