Family-owned & insured · since 1990
SERVICE AREA · ST. PETERS, ST. CHARLES COUNTY

St. Peters, MO Roofing

The short answer: Emmendorfer Exteriors is a family-owned roofing contractor based in Union, roofing homes in St. Peters since founder Matt Emmendorfer started the company in Overland in 1990. St. Peters publishes its own re-roofing rules, permits are only required in three specific situations, and we build every estimate around them.

St. Peters grew fast and grew early: 486 people in 1970, 40,660 by 1990, 57,732 at the 2020 census. Most of the city's homes went up inside that same twenty-year window, which means a lot of St. Peters roofs are hitting their second or third replacement at close to the same time.

We come to St. Peters from our Union shop. Matt Emmendorfer started the business in Overland, in St. Louis County, back in 1990, then moved it to Union in 2003, so this is a St. Louis metro roofing family, not an outside crew. In-house family crews, four manufacturer certifications, and Tom Emmendorfer on the insurance side of a claim, all travel with us. A local office doesn't, and we'd rather say that than pretend otherwise.

Local proof

Why St. Peters homeowners call us

  • We know St. Peters' own re-roofing code.

    The city publishes a document most contractors never read closely. We do, and we'll walk you through exactly what it requires for your address.

  • Roofing the metro since 1990.

    Founder Matt Emmendorfer, sons Tom and Tim, roughly 2,400 Missouri homes roofed, in-house crews only.

  • Full tear-off, decking priced upfront.

    St. Peters requires it in most cases, and it's our standard everywhere regardless.

  • Tom handles your insurance claim.

    He documents the damage, files it, and meets your adjuster on the roof.

What St. Peters actually requires

The city's Residential Re-Roofing Requirements, last revised March 2024, spells out three permit triggers: more than 25 percent of the sheathing needs replacing, the roof covering material is changing, or the existing board sheathing has gaps too wide to code. Outside those three, no permit, though the code still applies.

One detail surprises people: St. Peters amended its adopted code so an ice barrier isn't required here, unlike most jurisdictions. That doesn't mean skip it everywhere. North-facing slopes, low-pitch sections, and eaves over unheated space still benefit from one, and we'll flag it when your roof has those conditions rather than sell it as a blanket add-on. See our ice dam guide for why.

Full tear-off is required, with one narrow exception for a single sound existing layer. Underlayment is two layers on slopes 2:12 to 4:12, one layer above that. Ventilation can't be reduced by the re-roof, and on 1980s and 90s St. Peters homes, checking it is usually worth the five extra minutes. See our attic ventilation guide.

The one thing worth planning for: sheathing condition and layer count are only fully known once the old roof comes off, so we price decking contingency into the estimate up front instead of surprising you mid-tear-off.

Services

What we do in St. Peters

Roof replacement is the main call in a city this age, alongside roof inspection for anyone unsure whether they're there yet, and roof repair for the isolated stuff that doesn't need a full job. Gutters round out most projects.

Before you sign

Choosing a roofer in St. Peters?

Ask any contractor whether they know the city's own re-roofing document before they quote you. Most don't. Our repair-or-replace guide covers the decision itself once you know where you stand.

FAQ

St. Peters, MO roofing questions

Only if more than 25% of the sheathing needs replacing, the material is changing, or the board sheathing needs panel sheathing. A standard shingle swap doesn't need one.
No, the city's code doesn't require it. We still recommend it on north-facing slopes and low-pitch sections, and we'll tell you honestly if yours qualifies.
St. Peters requires full tear-off past one existing layer. Two layers means tear-off either way, our standard everywhere.
We build decking contingency into the estimate before we start. Anything that changes the scope significantly gets confirmed with you in writing first.
Often not. A re-roof doesn't require adding ventilation under St. Peters' rules, but it's worth checking on homes from that era, and we'll tell you straight if yours needs it.
Free estimate

Get a free roof estimate in St. Peters, MO

A real Emmendorfer walks your roof, names the manufacturer in writing, and gives you a number that doesn't change.