At a glance: In short: 18.33 squares, OC Duration, two layers of synthetic underlayment, a heavier spec than our standard single layer, ridge vent, lifetime workmanship warranty. Twin Valley Road, Troy, MO 63379, done September 30, 2026 by our St. Louis crew (314-429-6000).
A 18.33-square roof (1,833 square feet), about what a standard ranch house carries on Twin Valley Road in Troy, MO, a Madison County city along I-55/70 east of Collinsville. It was our only Troy roof of September. OC Duration went over two layers of synthetic underlayment, a heavier spec than our standard single layer, with ice and water membrane at the eaves and valleys.
Project record
| Location | Twin Valley Road (Troy, MO 63379) |
|---|---|
| Completed | Wednesday, September 30, 2026 |
| Opened to completed | 15 days |
| Roof size | 18.33 squares (about 1,833 sq ft) |
| Scope of work | Full tear-off and roof replacement |
| Shingle | Owens Corning — OC Duration |
| Underlayment | JBI Synthetic, double layer |
| 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 | STL091526032 |
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
Duration is Owens Corning's best-known architectural shingle. The engineered, woven SureNail strip across the nailing line is what sets it apart: it gives nails a defined target and grip. 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:
- 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.
- 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. Continuous exhaust at the peak. Together with the soffit intake, it moves heat and moisture out of the attic.
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 September 15, 2026 and the crew finished on September 30, 2026, 15 days later. We’ve been family-owned since 1947. We run our own crews, 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 Troy?
Free inspection, documented slope by slope, no obligation. St. Louis office: 314-429-6000
FAQ about this roof
What shingle was installed on this Troy 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.
How big was the roof on Twin Valley Road?
18.33 squares, or about 1,833 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.
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.
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.