
Metal Roof Coating
Exposed-fastener R-panel and standing seam roofs with surface rust and leaking screws. The panels stay in place while every fastener and lap is sealed, then the whole field is coated.
- 1Wash Panels
- 2Treat Rust
- 3Seal Laps
- 4Topcoat


We handle metal roof coating for Paducah warehouses, shops, and plants, starting with a roof walk that checks every screw, lap, and gutter before any coating goes on.
Most metal roof leaks start at a handful of parts. Here is what to look for from the ground, the roof hatch, and the ceiling below.
Rust bleeding from the overlap where one panel meets the next means water sits in the lap. Caught early, the lap is cleaned, primed, and sealed with fabric.
Heads standing above the rib, or washers cracked flat, are the first leak path on most R-panel roofs. Each one gets tightened, upsized, or resealed.
Water on the floor after each storm means an open path through a fastener, lap, or flashing right now. Call before stored goods or ceiling tile soak through.
Caps that have pulled loose let wind push rain under the top edge of the panels. Loose closures and nests at the ridge are worth a look on the next roof walk.
Clogged or sagging gutters back water up to the panel ends at the eave, where red rust starts. Clearing and resetting them comes before any coating.
That chalky film is white rust using up the zinc layer, often where dew sits along laps. It needs a specific cleaner and a zinc primer before coating.
Each system goes on a commercial roof in a set order. The rail on every card shows that order, so you know what happens on your roof and when.

Exposed-fastener R-panel and standing seam roofs with surface rust and leaking screws. The panels stay in place while every fastener and lap is sealed, then the whole field is coated.

Low-slope metal, dented panels that hold water, and gutter lines that stay wet after rain. Silicone takes standing water and keeps its stretch through long summers in the sun.

Pitched metal on shops, barns used for business, and warehouses that shed water fast. Acrylic stays bright white, cleans up easily, and accepts recoats from several coating families.

Metal buildings that run hot in summer or sweat in winter with little insulation. Foam fills the corrugations, buries the screw heads, and gets a protective top coat.

Flat, granule-holding shingle sections on strip centers, offices, and churches, where the shingle maker allows coating. Curling or cracked shingles call for replacement instead.
Call and tell us where the stain or drip shows inside, and whether it follows rain or cool mornings. That detail separates a leak from condensation.
Five steps in the order they happen on a coated metal roof. Most of the labor goes into the first three.
Every panel, lap, and fastener gets walked and probed, failed washers are counted, and gutters, curbs, and skylight panels are checked. Inside, we look for ceiling stains and condensation, then photograph the findings.
On The RoofPower washing strips dirt, oil, and the chalky film on old paint, which would weaken adhesion. A wipe test afterward shows whether the chalking is gone.
On The RoofRusted areas are scraped and primed to the coating maker’s spec. Stripped screws give way to oversized fasteners with new washers, and end laps get polyester fabric set in a base coat.
On The RoofSkylight panel edges, pipe boots, HVAC curbs, and ridge caps get hand-applied coating or sealant. These spots move differently from the field, so each one is treated on its own.
At The BuildingBase and top coats go on by roller or sprayer at the thickness the coating maker lists, each with its own cure time. Sections can be finished one at a time.
On The RoofMatch what you see on your roof to the job that usually follows. The roof walk confirms it.
| What You See On The Roof | Coat | Restore | Re-Panel | Replace |
|---|---|---|---|---|
| Firm panels with orange surface rust and leaking screws | Usually Fits | Sometimes | Rarely | Rarely |
| A few sheets rusted through, the rest firm underfoot | Sometimes | Usually Fits | Sometimes | Rarely |
| Pinholes and daylight across whole sections, framing intact | Rarely | Sometimes | Usually Fits | Sometimes |
| Sagging purlins or wet, crushed insulation under the steel | Rarely | Rarely | Sometimes | Usually Fits |
| Hail dents that hold water, factory paint still intact | Usually Fits | Sometimes | Rarely | Rarely |
| Standing seam roof with one leaking seam line | Usually Fits | Sometimes | Rarely | Rarely |
Four reasons owners coat solid metal roofs instead of tearing them off.
Each screw head and washer ends up under the film, closing the most common leak path on R-panel roofs.
Light-colored coatings reflect sunlight, so the steel runs cooler and moves less between afternoon and night.
Firm panels stay on the building, so the old metal never becomes a load headed to the landfill.
Work stays on top of the roof with no openings cut, so most tenants and staff keep working below.
We coat commercial metal roofs in Paducah and the 15 western Kentucky towns in this table.
Outside these towns? Call us or send us a message.
| Town | County | What We See On Roofs There |
|---|---|---|
| Paducah Home Base | McCracken | Warehouses, shops, and riverfront buildings where river fog keeps end laps, gutters, and eave panel ends damp. |
| Mayfield | Graves | Storm-era repairs where replacement sheets meet older panels, with doubled screw rows and mismatched end laps. |
| Murray | Calloway | Uninsulated farm and shop buildings where condensation rusts the panels from the underside along purlin lines. |
| Benton | Marshall | Kentucky Lake humidity that keeps panels wet longer and feeds white rust at galvanized laps. |
| Calvert City | Marshall | Plant and warehouse roofs carrying exhaust residue that has to come off before a coating will bond. |
| Eddyville | Lyon | Wooded lots that drop leaves and limbs into gutters, behind curbs, and against ridge caps. |
| Gilbertsville | Marshall | Open-water wind near Kentucky Dam that lifts ridge caps and loosens rake trim on exposed buildings. |
| Hardin | Marshall | Shops where the scope sets the paperwork: a plain recoat versus replaced skylight panels, end laps, or added foam. |
| Kuttawa | Lyon | Lake-facing eaves off Lake Barkley with loose trim, open closures, and white rust on galvanized flashing. |
| Grand Rivers | Livingston | Shoreline buildings between the two lakes with cracked skylight panel edges and split pipe boots. |
| Smithland | Livingston | Low-slope metal with interior drains, ponding rings at the drain bowl, and rust at the clamping ring. |
| Kevil | Ballard | R-panel shops on county roads near the McCracken line with worn ridge caps and rusted sheets. |
| Reidland | McCracken | Commercial buildings with Paducah mailing addresses, rooftop unit curbs, and county-run inspections. |
| La Center | Ballard | Conduit straps screwed through the panels and disconnect boxes on the roof field that need masking. |
| Wickliffe | Ballard | Low ground at the river confluence where fog lingers and red rust starts at panel ends and gutter hangers. |
| Fredonia | Caldwell | Older metal buildings where replacement sheets must match the panel gauge and profile, plus rust bloom at the eaves. |
Short answers to what owners ask before a metal roof is coated.
It is a liquid membrane that cures into one rubbery layer over the panels, seams, and screws. Before it goes on, the roof is cleaned, rust is treated, and every fastener and lap is sealed, then primer, base, and top coats follow. Panels rusted through or loose at the purlins get replaced first.
Summer heat, freeze-and-thaw winters, and spring and fall storms all work on the same spots: screws, laps, and flashings. A light-colored coating keeps the steel cooler so it moves less, and the elastic film stretches with the panels. Forecasts from the National Weather Service in Paducah set the schedule, since every coating needs dry hours to cure.
Coat it when the panels are firm and the leaks come from screws and laps. Re-panel when whole sections are rusted through but the purlins hold, and replace when the framing or most of the panels have failed. Wet insulation under the steel pushes the call toward re-paneling, since it holds water against the metal.
Yes. Exposed-fastener R-panel roofs need the most prep, since every screw and washer is checked and sealed. Standing seam roofs have few exposed fasteners, so the work centers on trims, clips, penetrations, and any seam line that leaks. Both get the same wash, rust treatment, and field coat.
It can. A warehouse with a pitched metal roof and a flat section over the office often gets acrylic on the slopes and silicone where water sits. Low spots on an otherwise sloped roof can take silicone spot treatment before an acrylic field coat, as long as the products are listed as compatible.
Gutters are cleared before washing, and loose hangers are reset so water leaves the roof fast. Rusted gutter seams get the same rust treatment as the panels, and wash debris is kept out of the downspouts so they drain freely while the coating cures.
Tell us the roof size and what you see inside, and we will set up a roof walk in Paducah or a nearby town.
Or call (270) 236-5587
Leave a name and number and we will call you about your commercial roof. Or call (270) 236-5587 now.