At a glance: In short: 5.67 squares, IKO Dynasty, synthetic underlayment across the full deck, ridge vent, lifetime workmanship warranty. Althea Avenue, Affton, MO 63123, done July 1, 2026 by our St. Louis crew (314-429-6000).
This one was a 5.67-square job, only about 567 square feet, the scale of a garage, porch roof or one section of a house on Althea Avenue in Affton, MO, an unincorporated South County community just past the city limits. Crews closed it out on July 1, 2026. IKO Dynasty went over synthetic underlayment across the full deck, with ice and water membrane at the eaves and valleys.
Job specs
| Location | Althea Avenue (Affton, MO 63123) |
|---|---|
| Completed | Wednesday, July 1, 2026 |
| Opened to completed | 9 days |
| Roof size | 5.67 squares (about 567 sq ft) |
| Scope of work | Full tear-off and roof replacement |
| Shingle | IKO — IKO Dynasty |
| Underlayment | JBI Synthetic |
| Ice & water | Alco Ice & Water |
| Starter course | IKO Starter |
| Hip & ridge | IKO Hip & Ridge |
| Ventilation | Lomanco Omni Roll ridge vent |
| Warranty | Lifetime workmanship warranty |
| Project number | STL062226045 |
Want to see what IKO Dynasty looks like on a whole house? Try every color in our IKO Dynasty color selector.
Materials installed, layer by layer
With IKO Dynasty, the detail that matters most is the ArmourZone nailing strip: a wider, reinforced band where the nails go, 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 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.
- Ice and water shield in the valleys and along the eaves. Those are the two places a Midwest roof takes on water first, from ice dams in January and heavy runoff in spring storms.
- IKO 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.
- IKO 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.
Who installed it
John Beal Roofing crews out of our St. Louis office installed this roof. The job was opened in our system on June 22, 2026 and the crew finished on July 1, 2026, 9 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. If a storm opens up a roof at 2 a.m., someone answers the phone. See 24/7 emergency service.
Need a roof in Affton?
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 Affton roof?
IKO IKO Dynasty, over synthetic underlayment across the full deck. The full system is in the project details table above.
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.
How long did this project take from start to finish?
9 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.
Does John Beal Roofing work in Affton, MO?
Yes. Affton 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 Affton?
Our St. Louis office at 314-429-6000. A person answers 24 hours a day, including nights, weekends and holidays.