Roof Leak Repair

Common Symptoms

• ✓Brown or yellow water stain on interior ceiling or walls
• ✓Dripping water during or after rain
• ✓Wet insulation visible in the attic
• ✓Musty odor in upstairs rooms or attic space
• ✓Bubbling or peeling paint on ceilings
• ✓Daylight visible through attic decking or rafters

What Causes This

Most roof leaks in St. Louis trace back to failed flashing, cracked or missing shingles, deteriorated pipe boots, or compromised valley seals — not to the flat field of shingles itself. Water enters at a penetration or transition point, then travels laterally along rafters or sheathing before it drips onto your ceiling, often several feet from the actual entry point. Ice damming in January and February can drive water under shingles without any visible shingle damage. Age-related sealant failure around chimneys and skylights accounts for a significant share of calls we receive from homes over 15 years old.

When to Call Immediately

Do not ignore a slow drip. A 6-inch water stain today becomes mold, rotted decking, and a collapsed ceiling within 6–18 months. If water is actively entering during a storm, call immediately — we carry emergency tarps and can protect the interior while weather clears.

How Revolve Fixes It

1. 1Conduct a systematic attic inspection under active or simulated rain conditions to trace the travel path of water.
2. 2Identify the true entry point at the roof surface — distinct from the visible interior stain location.
3. 3Remove any damaged, cracked, or improperly lapped shingles in the affected zone.
4. 4Inspect and replace flashing, sealant, and underlayment at the failure point.
5. 5Reinstall shingles with proper alignment, nail pattern, and sealant per manufacturer spec.
6. 6Document with photographs before and after — particularly important if a future insurance claim is possible.

Why Roof Leaks Are Hard to Self-Diagnose

Water is deceptive. It enters the roof at one point, travels along a rafter or the top of the drywall backing, and drips somewhere else entirely. Homeowners who patch the obvious wet spot on the ceiling often find themselves back in the same situation after the next rain because the actual entry point was 4 feet uphill on the roof.

At Revolve, the diagnostic process starts in the attic, not on the roof. We follow the moisture trail under low light with a flashlight, looking for water staining on rafters, wet insulation batts, and rust streaks on nails — all of which point uphill toward the true source. Only after identifying the travel path do we go up on the roof to confirm and repair.

In St. Louis, late-summer thunderstorm patterns and winter ice damming create two distinct leak seasons. The diagnostic approach differs between them. Summer leaks almost always point to a penetration failure. Ice dam leaks in January or February often look identical to flashing failures but require a different repair strategy — adding ice-and-water underlayment in the affected zone rather than simply replacing the shingle.

What a Professional Leak Repair Includes

A professional repair is not just patching the shingle you can see from the driveway. It means identifying every point where water can enter in the affected area and addressing all of them in the same visit. A competent roofer who finds a failed boot also checks the adjacent valley seal and the kickout flashing at the eave — because when one seal goes, others nearby are usually close behind.

Revolve's process: attic inspection first, roof surface inspection second, written scope before any work begins. We photograph every condition we find. If additional damage is discovered mid-repair, we stop and communicate before proceeding. There are no surprise line items.

Material quality matters. Caulk-over repairs with consumer-grade sealant may hold for one season. Proper repairs use roofing-grade flashing, self-adhering modified bitumen ice-and-water membrane at the repair zone, and shingles matched to the existing roof as closely as possible. A repair done to this standard should perform without issue until the surrounding roof reaches end of life.

When a Leak Repair Is Not Enough

Some homes we visit have a leak problem that is actually a roof-age problem. If the shingles are 22 years old, granule loss is severe, and three separate leak points exist, the honest answer is that patchwork repair will not hold for more than another year or two. We will tell you that directly, along with a replacement estimate, and let you decide which path makes sense given your timeline and budget.

That said, a well-executed repair on a roof with 5–8 years of life remaining is a sound investment. Not every leak means a full replacement. Revolve has been doing this for over 17 years and has completed more than 6,000 projects across the St. Louis metro. We have seen both extremes and we give honest assessments, not upsells.

If your leak involves potential insurance coverage — storm-related damage, for example — see our storm damage and insurance claims process before authorizing any repair. Insurance documentation requirements are specific, and repairs made before an adjuster inspects the damage can complicate a valid claim.