At a glance: John Beal Roofing replaced the roof on Greenwood Lane in Godfrey, IL 62035, finishing September 1, 2026. 26.67 squares of GAF GAF Timberline HDZ, installed over synthetic underlayment across the full deck. Handled by our St. Louis office (314-429-6000).
A 26.67-square roof, the size of a larger ranch or a modest two-story on Greenwood Lane in Godfrey, IL, a Madison County village just north of Alton. It was one of 6 roof replacements our crews completed in Godfrey in September 2026. GAF Timberline HDZ went over synthetic underlayment across the full deck, with ice and water membrane at the eaves and valleys.
Job specs
| Location | Greenwood Lane (Godfrey, IL 62035) |
|---|---|
| Completed | Tuesday, September 1, 2026 |
| Opened to completed | 15 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 | GAF Starter |
| Hip & ridge | GAF Hip & Ridge |
| Ventilation | Lomanco Omni Roll ridge vent |
| Warranty | Lifetime workmanship warranty |
| Project number | STL081726030 |
Want to see what GAF Timberline HDZ looks like on a whole house? Try every color in our GAF Timberline HDZ color selector.
Materials installed, layer by layer
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. Every one of our replacements is a system, not just shingles. On this roof, from the deck up:
- 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.
- GAF 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.
- GAF Hip & Ridge cap. Pre-formed cap that seals the hips and ridge.
- Lomanco Omni Roll ridge vent. Continuous exhaust at the peak. Together with the soffit intake, it moves heat and moisture out of the attic.
Who did the work
The crew came out of our St. Louis office. The job was opened in our system on August 17, 2026 and the crew finished on September 1, 2026, 15 days later. John Beal Roofing has been family-run since 1947, and our lifetime workmanship warranty covers the installation for as long as you own the home. We answer the phone around the clock, storms included. See 24/7 emergency service.
Need a roof in Godfrey?
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 Godfrey roof?
GAF GAF Timberline HDZ, over synthetic underlayment across the full deck. The full system is in the project details table above.
How big was the roof on Greenwood Lane?
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.
How long did this project take from start to finish?
15 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.
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.
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 Godfrey?
Our St. Louis office at 314-429-6000. A person answers 24 hours a day, including nights, weekends and holidays.