Earth City spans both. The business parks on the Missouri River flood plain are largely flat and low-slope roofs needing membrane replacement, while the nearby residential streets in Bridgeton and Maryland Heights are standard pitched shingle re-roofs. They are different systems and different trades. Your matched pro identifies your roof type on-site and scopes the correct replacement — a membrane tear-off and new low-slope system, or a full shingle tear-off — so the work matches the structure rather than forcing one approach across very different roofs.

It depends on roof type. Low-slope and flat roofs common to the corridor use membrane systems rather than shingles; standard residential roofs nearby take architectural asphalt shingles with good wind ratings and longer warranties. The matched contractor can identify your roof and quote the appropriate system — membrane for low-slope, architectural shingles for pitched — so the material fits your specific structure. On the flood plain, drainage and low-slope detailing also factor into the right material choice for a long-lasting replacement.

On low-slope roofs the crew assesses the substrate and insulation and details the membrane and drainage correctly — critical on the flood plain; on pitched residential roofs they inspect wood decking after tear-off and replace failing sheets (per-sheet pricing) before new underlayment, flashing, and ventilation go on. Each system has its own substrate work. Ask your matched pro how the substrate or decking is priced for your roof type, since on the river-corridor mix of flat and pitched roofs it is a genuine variable an on-site look surfaces.

Permitting runs through the applicable municipality and St. Louis County, since Missouri has no statewide contractor license; your matched pro pulls the permit. Expect a manufacturer's material warranty (membrane or shingle, longer when the installer is certified) plus a contractor workmanship warranty on the install, both in writing. The workmanship warranty is the key protection — on a flat flood-plain roof especially, correct membrane and drainage detail, not the product alone, is what keeps the replacement watertight over its full service life.

On a low-slope roof, repeated ponding, blistering, or membrane failure across the field usually signals replacement over more patching; on a pitched residential roof, widespread shingle damage points the same way. Roof type, age, and extent of damage decide it. Your matched pro inspects the whole roof sized to its type, documents any storm damage for an insurance claim, and gives you an honest read on whether a targeted repair still works or a full replacement of your specific Earth City roof is warranted.