At a glance: Completed October 22, 2026: a full tear-off and replacement on Cedarmill Drive, Chesterfield, MO. Shingle: GAF Timberline HDZ. Size: 26.67 squares. Underlayment: synthetic underlayment across the full deck. Office: St. Louis, 314-429-6000.
Our crew finished a mid-size 26.67-square roof, roughly 2,667 square feet on Cedarmill Drive in Chesterfield, MO on Thursday, October 22. Chesterfield is a West County city of larger subdivision homes along the I-64 corridor. It was one of 7 roof replacements our crews completed in Chesterfield in October 2026. On top: GAF Timberline HDZ. Underneath: synthetic underlayment across the full deck plus ice and water membrane where water collects.
Job specs
| Location | Cedarmill Drive (Chesterfield, MO 63017) |
|---|---|
| Completed | Thursday, October 22, 2026 |
| Opened to completed | 86 days |
| Roof size | 26.67 squares (about 2,667 sq ft) |
| Scope of work | Full tear-off and roof replacement |
| Shingle | GAF — GAF Timberline HDZ |
| Underlayment | JBI Synthetic |
| Ice & water | Alco Ice & Water |
| Starter course | OC Starter |
| Hip & ridge | GAF Hip & Ridge |
| Ventilation | Lomanco Omni Roll ridge vent |
| Warranty | Lifetime workmanship warranty |
| Project number | STL072826012 |
Choosing a color for your own roof? Browse every GAF Timberline HDZ color on a whole-house preview in our GAF Timberline HDZ color selector.
The roofing system on this house
Timberline HDZ is GAF's architectural shingle with a wide StrikeZone nailing area and LayerLock Technology holding the two layers of the shingle together, so fasteners land where they hold best. 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, edge to edge. It doesn’t wrinkle or tear like felt, and it keeps the deck dry if a shower pops up mid-job.
- 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.
- 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.
- GAF 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
This was a St. Louis office job, installed by John Beal Roofing. The job was opened in our system on July 28, 2026 and the crew finished on October 22, 2026, 86 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 Chesterfield?
Free inspection, documented slope by slope, no obligation. St. Louis office: 314-429-6000
FAQ about this roof
What shingle was installed on this Chesterfield roof?
GAF GAF Timberline HDZ, over synthetic underlayment across the full deck. The full system is in the project details table above.
Does John Beal Roofing work in Chesterfield, MO?
Yes. Chesterfield is served by our St. Louis office, and we've completed 25 roof replacements there in the last few months alone. Call 314-429-6000 for a free inspection.
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 Cedarmill Drive?
26.67 squares, or about 2,667 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.
Who do I call about a roof in Chesterfield?
Our St. Louis office at 314-429-6000. A person answers 24 hours a day, including nights, weekends and holidays.