61 mph measured gust near Verona
Trained spotter measures 70 MPH wind gusts.
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TPO is a heat-welded single-ply membrane common on commercial and low-slope roofs. It is white and reflective, and seam quality is what mostly decides its lifespan.
For Dane County, NOAA lists 149 hail reports (largest 4 in), 64 damaging-wind reports (up to 70 mph) and 6 tornado reports from January 2024 to June 2026. These count reports, not damaged roofs.
Trained spotter measures 70 MPH wind gusts.
The total loss of a small shed and a Tobacco Shed to a fire was attributed to a lightning strike.
Public report of 1.75 inch diameter hail near Cottage Grove.
Source: NOAA NCEI Storm Events Database, data through Jun 30, 2026. All storm reports for Marshall
| Job | Typical US range |
|---|---|
| Flat roof (TPO / EPDM), average home | $5,000 – $12,000 |
National planning ranges for an average ~2,000 sq ft home, not quotes. Local labor, roof pitch, layers to remove, materials and permits change the price.
A thermoplastic polyolefin single-ply membrane whose seams are heat-welded; common on flat commercial roofs.
Both work. TPO is heat-welded and reflective; EPDM is a rubber membrane with glued or taped seams. Installer experience matters more than the name.
Many cities and counties require a building permit for roof work; the roofing company normally pulls it. Ask who is responsible and request a copy. Check with the Dane County building department for local rules.
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