At a glance: Completed June 18, 2026: a full tear-off and replacement on Robbins Mill Road, Florissant, MO. Shingle: OC Duration. Size: 48.67 squares. Underlayment: synthetic underlayment across the full deck. Office: St. Louis, 314-429-6000.
On Robbins Mill Road in Florissant, MO (one of the largest cities in North County, with neighborhood after neighborhood of 1950s and 1960s ranch homes), the crew tore off and replaced a large 48.67-square roof covering about 4,867 square feet. At 48.67 squares it was the fifth-largest of the 91 roof replacements we completed in June. The system: synthetic underlayment across the full deck, ice and water membrane in the valleys and at the eaves, and OC Duration on top.
What the work order shows
| Location | Robbins Mill Road (Florissant, MO 63034) |
|---|---|
| Completed | Thursday, June 18, 2026 |
| Opened to completed | 58 days |
| Roof size | 48.67 squares (about 4,867 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 | STL042126017 |
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.
The roofing system on this house
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. 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. 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
This was a St. Louis office job, installed by our own crew, not subcontracted out. From the day the job was opened (April 21, 2026) to the day the crew finished (June 18, 2026) took 58 days. Family-owned since 1947, we back every replacement with a lifetime workmanship warranty. If a storm opens up a roof at 2 a.m., someone answers the phone. See 24/7 emergency service.
Need a roof in Florissant?
Free inspection, documented slope by slope, no obligation. St. Louis office: 314-429-6000
Questions homeowners ask about this project
What shingle was installed on this Florissant 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. Alco Ice & Water membrane went in the valleys and along the eaves, the spots where water backs up or collects first.
How big was the roof on Robbins Mill Road?
48.67 squares, or about 4,867 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.
Does John Beal Roofing work in Florissant, MO?
Yes. Florissant 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.
Who do I call about a roof in Florissant?
Our St. Louis office at 314-429-6000. A person answers 24 hours a day, including nights, weekends and holidays.