Metal Roof Leak Repair in St. Louis, MO

Metal Roof Leak Repair in St. Louis: Stop the Drip Before It Ruins Your Decking

St. Louis sits where the Missouri River meets the Mississippi, and that means hot humid summers, spring hail, and ice storms that work metal roofs hard. Whether you own a red-brick bungalow in South City, a Tudor in Webster Groves, or a newer two-story in Chesterfield, a leak in a metal roof rarely announces itself with a dramatic ceiling stain. It starts as a rusty fastener, a separated seam, or a flashing gap at a parapet or party wall, and it finds the path of least resistance into your attic. Metal Roof Leak Repair in St. Louis is what we do, and we trace the leak to its true source instead of smearing caulk on the first wet spot we see. We have been on St. Louis roofs since 2009 and are a Metal Roofing Alliance Member. If you are hearing drips after the last storm, call (314) 689-1531 and we will get a tarp on it if needed. You can also read more about our broader metal roof repair services while you wait for us to arrive.

Why Metal Roof Leaks Hit St. Louis Homes Harder Than You Think

The dominant failure mode in this city is not panel rust-through. It is fastener back-out and seam separation driven by thermal cycling and spring hail, followed closely by flashing failures at chimneys, dormers, and the parapet walls common on the brick rowhouses and Second Empire homes in Lafayette Square and Soulard. Our freeze-thaw cycles in January and February open up tiny gaps that summer heat then widens. Add the 2011 Good Friday tornado and the May 2025 north city tornado to the list of wind events that have loosened panels and fasteners across North and South County, and you have a building stock that takes a beating.

Exposed-fastener corrugated and ribbed panels lose screws to wood shrinkage and wind uplift, and each backed-out screw is a future leak point.
Standing seam panels separate at seams when panels expand and contract against improperly set clips, especially on long south-facing runs.
Chimney and skylight flashing pulls away from masonry as the mortar and counterflashing age, which is common on 1910s-1930s brick Tudors and bungalows.
Ice dams form at the eaves during St. Louis ice storms and push meltwater under panels and up behind fascia.
Hail dents and loosens fasteners on older metal shingle and stone-coated steel roofs, creating pinhole leaks that show up months later.

Every one of these failures has a specific fix, and none of them is solved by a tube of silicone from the big box store.

Key info: A homeowner in Kirkwood called us after two failed caulk repairs on a standing seam roof. The real leak was a separated seam panel above the dormer, not the flashing his previous contractor kept sealing. We replaced the panel and reset the clips, and the ceiling has been dry through two hail seasons since.

If you want to understand the code and permit side of roofing work in the city, the City of St. Louis Building Division is the authority to check with before any structural work is signed off.

How We Trace and Fix a Metal Roof Leak in St. Louis

We do not guess. We start with a full water test and a visual inspection of the panel field, seams, fasteners, and every penetration, then work from the attic side to confirm where the water is actually entering. On steep mansard roofs in the Central West End and on low-slope porch roofs in University City, that often means two people, one on the roof and one in the attic with a flashlight. Once we find the source, we fix the cause, not the symptom.

We inspect the roof and attic, photograph the leak path, and identify every compromised fastener, seam, and flashing detail.
We replace backed-out or rusted screws with correct-gauge fasteners and new EPDM washers, and we re-seat any lifted panels.
We re-flash chimneys, skylights, dormers, and parapet walls with proper counterflashing and sealant rated for metal-to-masonry contact.
We seal or replace separated standing seam panels and re-clip them to allow thermal movement.
We water-test the repair before we leave and give you photos of what we found and what we fixed.

If your roof has widespread fastener failure rather than one isolated leak, we will tell you straight and point you toward screw replacement and re-fastening as the more honest fix.

Key info: A farmhouse outside Washington, MO had a persistent leak over the kitchen that three contractors had blamed on the chimney. The actual source was a row of corroded screws on the north-facing panel run, hidden under a layer of leaves. We replaced 40 screws, cleared the debris, and the leak stopped. That is what tracing the source looks like.

Repair Approaches We Use on St. Louis Metal Roofs

Approach	Description	Best for
Fastener replacement	Remove backed-out or rusted screws, install new fasteners with fresh washers, torque to spec.	Exposed-fastener corrugated and ribbed roofs with isolated leaks
Seam repair and re-clipping	Re-seat separated standing seam panels, replace failed clips, and restore proper thermal movement.	Standing seam roofs with seam separation or oil-canning
Flashing rebuild	Replace counterflashing at chimneys, skylights, dormers, and parapet walls with metal-to-masonry detailing.	Brick Tudors, bungalows, and rowhouses with masonry penetrations
Panel replacement	Cut out and replace damaged panels, match profile and color, and re-seal the field.	Hail-damaged or torn panels on metal shingle and stone-coated roofs
Emergency tarping	Secure a temporary weatherproof cover after storm damage to stop active water intrusion.	Active leaks after hail or wind events across St. Louis County

Metal Roof Leak Repair Cost in St. Louis: What to Expect

Most single-leak repairs on a St. Louis metal roof start at From $450. That covers the inspection, water test, and a straightforward fix like replacing a run of fasteners or re-sealing a flashing detail. The price moves up when the leak is hard to reach, when the roof pitch is steep, when the repair requires panel replacement, or when the source turns out to be widespread fastener failure across the whole field. Two-story homes in Chesterfield and Wildwood often cost more to access than a single-story ranch in Florissant, and historic rowhouses in Soulard can require more careful masonry detailing around parapets.

We always recommend getting two or three estimates on any repair over a few hundred dollars. A contractor who will not get on the roof, or who quotes a leak fix without water-testing, is guessing. You can see our full range of repair pricing on the pricing page before you call.

What to Look for When Hiring a Metal Roofing Contractor Near St. Louis

Hiring for a leak repair is not the same as hiring for a full replacement, but the basics still apply. Ask for proof of licensing and insurance, and ask whether the crew doing the work is employees or subcontractors. Get at least two written estimates with a clear scope, and ask each contractor to explain how they will find the leak source, not just how they will seal it. On historic homes in Lafayette Square or the Central West End, ask whether the contractor has worked with the city's Cultural Resources Office on exterior changes, and in subdivisions with HOAs, confirm any color or profile restrictions before panels are ordered.

Check references from jobs in the last year, and look at photos of completed repairs. A contractor who cannot produce before-and-after photos of a metal roof leak repair is one to skip. When you are ready, you can contact us for a free estimate and we will walk you through what we find.

Metal Roof Leak Repair in St. Louis: Pricing Guide

Service	Price	Details
Single leak diagnosis and repair	Starting at $450	Includes inspection, water test, and a straightforward fastener or flashing fix on an accessible roof section.
Fastener replacement (partial run)	Starting at $650	Replaces corroded or backed-out screws with new washers on one panel run, priced by linear footage.
Flashing rebuild at chimney or skylight	Starting at $850	Rebuilds counterflashing and sealant at masonry penetrations, with cost rising on steep or complex roofs.
Panel replacement (standing seam or shingle)	Starting at $1,200	Cuts out and replaces a damaged panel, matches profile and color, and re-clips for thermal movement.
Emergency tarping after storm	Starting at $350	Secures a temporary weatherproof cover to stop active leaks, credited toward the permanent repair.
Estimate	Free	On-site inspection and written scope within 24 hours at (314) 689-1531, no obligation to book.

Indicative pricing, the exact cost depends on square footage, finish, and site access. Free personalized estimate within 24h at (314) 689-1531.

Frequently asked questions: Metal Roof Leak Repair in St. Louis

How much does Metal Roof Leak Repair cost in St. Louis?

Most single-leak repairs start at From $450 and cover inspection, water testing, and a straightforward fix. Flashing rebuilds typically run $850 and up, and panel replacement starts around $1,200. Two-story homes and steep roofs cost more because access takes longer and requires more safety setup.

Can you find a metal roof leak that other contractors missed in St. Louis?

Yes, that is most of what we do. We water-test the roof and check the attic side to trace the actual entry point, which is often not where the ceiling stain appears. Backed-out screws on a north-facing run, separated seams above a dormer, and failed counterflashing at parapet walls are the three most common hidden sources we find in St. Louis.

What causes metal roof leaks in St. Louis homes?

The dominant failure here is fastener back-out and seam separation from thermal cycling, hail, and wind, followed by flashing failures at chimneys, dormers, and parapet walls. Ice dams during winter ice storms push water under panels at the eaves. Older metal shingle and stone-coated roofs also develop pinhole leaks from hail dents that loosen fasteners over time.

How long does a metal roof leak repair take?

A single fastener or flashing repair usually takes two to four hours on site. A panel replacement or a multi-point repair can take a full day. Emergency tarping is done the same day you call, and the permanent repair is scheduled within a few days depending on weather and material availability.

Do I need a permit for metal roof leak repair in St. Louis?

Minor repairs generally do not require a permit, but full panel replacement and any structural work do. Thresholds and fees vary by jurisdiction across St. Louis City and St. Louis County, so we confirm with the local building department before work begins. Historic districts may also require design review for visible exterior changes.

What is the difference between metal roof leak repair and a full metal roof repair?

Leak repair targets one specific water entry point, like a failed fastener run or a flashing gap. A full metal roof repair addresses broader system issues such as widespread fastener failure, multiple separated seams, or coating breakdown across the whole roof. We tell you honestly which one your roof needs after the inspection.

What is the best time of year for metal roof leak repair in St. Louis?

Spring and early summer are the busiest because hail and severe storms drive the most leaks, and fall is the best window for scheduled repairs before winter ice storms arrive. The failure mode that dominates here is fastener back-out and seam separation from thermal cycling, so late summer and early fall are ideal for catching problems before freeze-thaw makes them worse.

Do you handle emergency metal roof leak repair in St. Louis?

Yes. We offer emergency tarping after storms to stop active water intrusion, typically within a few hours of your call during business hours. Call (314) 689-1531 and describe the leak so we can bring the right materials. Permanent repairs are scheduled as soon as weather allows.

Is the estimate really free and no-obligation?

Yes. We inspect the roof, water-test if needed, and give you a written scope with photos and a price. You are under no obligation to book the repair. We will also tell you if the leak is minor enough to monitor rather than repair right away.

Are you licensed and insured for metal roof leak repair in St. Louis?

Yes. We carry general liability and workers compensation coverage, and we can provide a certificate of insurance on request. We have been working on St. Louis metal roofs since 2009 and are a Metal Roofing Alliance Member.