Roofing for Eureka homes: replacement, leaks and storm damage. In Eureka, the 2018 IRC is in force and the median home was built in 1999. Any permit the job needs is ours to pull.
Eureka runs to about 11.22 square miles and roughly 11,646 people. It sits about 25 miles southwest of downtown St. Louis. The community dates back to 1954. We cover ZIP code 63025.
No completed roof in Eureka is logged in our job records yet.
Eureka's housing is centered on the early 2000s. The city also annexed the 549-home Windswept Farms subdivision in 2019, adding a group of newer homes.
That includes Windswept Farms. Housing age and construction shift across Eureka, sometimes by decades within a few streets, which is why we look at the roof before we quote rather than after.
Eureka was hit by major Meramec River flooding in December 2015, with 100+ boat rescues, and again in April 2017, with roughly 48 inches of water damage to a church and damage to Eureka High School's gym floor. Researchers have linked the losses partly to outdated FEMA flood-frequency estimates for the area.
Housing from this stretch in Eureka sits on plywood or OSB decking and was largely first roofed with three-tab shingles. Most are on their second covering by now. The things worth checking are the penetrations rather than the field: pipe boots from this era are the single most common leak we trace, because the rubber collar splits long before the shingles wear out. Ridge venting was inconsistent through these years, and OSB that has been damp for a season goes soft in a way plywood does not — you find it with your feet, not from the ground.
By the Census Bureau's estimate there are 4,805 homes in Eureka, with a median year built of 1999. 143 of them (3%) went up before 1940 — 31st of 48 places on this site for pre-1940 share — and 2,270 (47%) in 2000 or later. The 1990s were the busiest decade, adding 1,009 of today's homes (21%). That is below St. Louis County's 10%.
The rule of thumb from Missouri's Department of Commerce and Insurance is a useful life of usually about 25 years for a roof. By that measure, 53% of Eureka's homes — the 2,535 built before 2000 — are past their first roof, and the 558 built before 1970 (12%) are usually on a third covering or later. Homes from the 2000s (928 in Eureka) are reaching their first replacement, while the 1,342 built since 2010 are mostly still on the roof they were built with.
Detached single-family houses make up 82% (3,922); attached houses and townhouses 4% (213). 317 homes (7%) sit in two- to nine-unit buildings and 353 (7%) in buildings of ten units or more, where the roof is usually a landlord's or an association's decision. 3,721 of 4,690 occupied homes (79%) are lived in by their owners. On a housing mix like this, the likely work is first replacements on 2000s builder-grade shingles and hail checks on newer roofs that look fine from the driveway.
| Built | Homes | Share | |
|---|---|---|---|
| Before 1940 | 143 | 3% | |
| 1940s | 134 | 3% | |
| 1950s | 63 | 1% | |
| 1960s | 218 | 5% | |
| 1970s | 503 | 10% | |
| 1980s | 465 | 10% | |
| 1990s | 1,009 | 21% | |
| 2000s | 928 | 19% | |
| 2010s | 879 | 18% | |
| 2020 or later | 463 | 10% |
Census ACS 2020–2024, tables B25034, B25035, B25024 and B25003: 4,805 homes, 4,690 occupied. Survey estimates.
Between 2016 and 2025 there were 10 reports of 1-inch-plus hail within 5 miles of Eureka’s center in the records of NOAA’s Storm Prediction Center, on 9 separate days. 4 of them were 1.75 inches or larger. The largest, 2.5 inches, came on May 26, 2024, about 1.3 miles west of the center. The most recent was 1.5 inches on March 14, 2025. A report needs someone to see the hail and send it in, so the count is a floor, not a full tally.
| Latest reports | Size | From center |
|---|---|---|
| March 14, 2025 | 1.5 inches | 1.6 mi NE |
| May 26, 2024 | 2.5 inches | 1.3 mi W |
| June 30, 2023 | 1.75 inches | 4.6 mi W |
| April 15, 2023 | 1.75 inches | 4.8 mi W |
| May 16, 2021 | 1 inch | 2.1 mi E |
Hail damage rarely shows from the ground; a storm inspection photographs each slope so you know either way.
Eureka has not published an answer on re-roof permits. The building department gets the question from us before work starts, and any permit it wants is part of our job.
Eureka enforces the 2018 IRC. City Code Section 5-3.5 adopts the 2018 International Residential Code, with amendments on file with the Building Commissioner's office. Section 5-3.4(b) adopts the 2018 International Building Code for commercial and industrial construction.
We could not find a published number for the building department, so this page does not print one. The city code refers to a Building Commissioner's office but does not name the commissioner. The department page is here.
What goes into a new roof: all eight layers, explainedWind 115 mph (ultimate) and ground snow 20 psf, the same across the metro; see the roofing code guide for what they govern.
Eureka borders Wildwood and Pacific. Our pages for them:
Also in St. Louis County:
| City | Re-roof permit | Code | Median built |
|---|---|---|---|
| Eureka | Not published | 2018 IRC | 1999 |
| Wildwood | Not published | Not published | 1992 |
| Pacific | Not published | Not published | 1985 |
| Affton | Conditional | 2015 IRC | 1958 |
| Ballwin | Yes | 2015 I-Codes (2024 I-Codes proposed for 2026) | 1976 |
| Brentwood | Not published | 2024 IRC | 1956 |
| Chesterfield | Not published | 2015 IBC / 2015 IRC | 1982 |
All 21 St. Louis County cities side by side →
Eureka does not publish a clear answer either way. We confirm it with the building department before starting and pull whatever is required.
Eureka enforces the 2018 IRC. City Code Section 5-3.5 adopts the 2018 International Residential Code, with amendments on file with the Building Commissioner's office. Section 5-3.4(b) adopts the 2018 International Building Code for commercial and industrial construction.
Median year built 1999, by the Census Bureau's 2020–2024 estimates. Of 4,805 homes, 2,535 were built before 2000 and 143 before 1940, so most roofs in Eureka are not the first one the house has had.
10 reports of 1-inch-plus hail fell within 5 miles of Eureka between 2016 and 2025, the biggest 2.5 inches on May 26, 2024 (NOAA Storm Prediction Center).
Not yet: no completed roof in Eureka is in our job records, so this page shows no job count.
Researched 2026-09-09; housing, Census ACS 2020–2024; hail, NOAA SPC. Sources: ecode360.com · ecode360.com · www.eureka.mo.us · www.eureka.mo.us · en.wikipedia.org · www.bestplaces.net · data.census.gov · www.spc.noaa.gov. Rules and staff change; check with the jurisdiction.
