As a York metal roof coating contractor, we inspect commercial metal roofs, repair rusted laps and fasteners, and coat solid panels across York, PA and nearby towns.
York metal roof coating starts with what the roof shows from above and below. These signs tell us whether to watch an area, repair it first, or come out right away.
Orange bloom on the ribs with no flaking cleans up during preparation. We mark how far it spreads so rust treatment covers every spot before primer goes down.
Screws that lift or spin let water run down the shank into the deck. Each one gets replaced with a larger screw and sealed, because a topcoat over a loose head splits as the panel moves.
Laps that gap at the panel ends hold water through freeze-thaw swings. We clean inside the lap, treat the rust there, and close the joint with sealant and reinforcing fabric.
Wet insulation or drips along a lap line during storms means water is already inside. Call us so we can trace the leak path and stop it before the next heavy rain.
Old sealant at rooftop unit curbs and exhaust stacks dries, shrinks, and pulls off the metal. We cut it out and reseal those penetrations during coating prep.
Each roof system below has its own preparation steps and limits. Pick the one closest to your building, or call and we will sort it out with you.
Exposed-fastener and standing-seam roofs on plants and shops get rust treatment, screw and lap repair, then a coating matched to the panel finish.
Commercial metal roof coating
Low-slope roofs that hold water after storms often take silicone well. We clear drains, cut out wet areas, and build thickness over seams and penetrations.
Silicone roof coating
Water-based acrylic fits sloped metal roofs that shed water fast. It needs dry, mild days to cure, so York acrylic work runs from late spring into early fall.
Acrylic roof coating
Spray foam builds one continuous insulated layer over flat metal, concrete, or older membranes. A dry surface, wind control, and a protective topcoat decide how it performs.
Spray foam roofing
Asphalt shingles on commercial buildings take coating only while they still lie flat and the product is approved for that shingle. Otherwise we tell you to reshingle.
Shingle roof coatingCall when a leak shows up at a seam, a curb, or the gutter line. We trace where the water gets in before anything on that roof is coated.
Five steps, in the same order on every metal roof we coat, so repairs are finished before any coating covers them.
Walking each slope, we check panel thickness, laps, screw rows, curbs, and gutters, then look for stains inside. Problem spots get marked and photographed so the repair list is clear before work starts.
Thin or perforated panels are replaced, loose screws are swapped for larger ones, and open laps are cleaned and closed. Coating goes only over metal that holds a screw firmly.
Pressure washing strips chalk, dirt, and loose scale. Remaining rust is wire-brushed and primed with the rust-inhibiting primer the coating system calls for.
Laps, curbs, vents, and screw heads get sealant and reinforcing fabric or a brush-grade product, so the likeliest leak points carry extra material.
Base coat and topcoat go on at the thickness the product sheet lists, checked with a wet-film gauge as we work. Then we walk the finished roof with you and point out the areas to watch.
Both answers come out of the same inspection. Here is how the two paths compare on a York metal building with a working plant underneath.
Coating makes sense when the panels hold screws and the leaks trace back to laps, fasteners, and curbs we can fix.
Replacement is the honest call when rust has eaten through the steel or the panels shift across most of the roof.
Coating plus reinforcement at each lap and screw line closes the joints where most metal roof leaks begin, without pulling a single panel.
Light-colored topcoats keep panels cooler on sunny afternoons than bare or faded metal. How much that changes the space below depends on the insulation and what runs inside.
Most coating work happens on the roof surface, so production lines, loading docks, and offices underneath keep going while each section is done.
Once coated, the roof can be inspected and recoated over the years instead of torn off. We note where wear shows first so you can plan the next visit.
Coating fits the buildings York runs on, from machinery and snack food plants to farm equipment shops. Here is what it does for those roofs.
We coat commercial metal roofs in York and five towns nearby: Hanover, Elizabethtown, Red Lion, Steelton, and Oxford.
Outside these towns? Call us or send us a message.
Food plants and equipment shops with long exposed-fastener roofs, many carrying replacement panels that need adhesion tests before coating.
Snack and food processing roofs, where wash water and loose debris have to be routed away from intakes during cleaning.
Machinery buildings whose side laps and end laps often need reinforcement and fastening work before field coating starts.
Older industrial roofs where we photograph panel repairs before coating, so later inspections have a record to compare.
Farm businesses and rural shops, where the first job is a safe way up to the joints, eaves, and penetrations.
Short answers to what building owners ask before a metal roof gets coated.
It pays off when the panels are solid and the leaks come from laps, screws, and penetrations that can be repaired. In that case the planning range for coating, about $2.50 to $4.00 per square foot, sits well below the $5 to $8 range for new panels.
Rust-through across the roof changes that math.
Preparation makes the biggest difference between two roofs of the same size. Rust treatment, replacement screws, lap repair, curb and flashing work, the number of coats, and how hard the roof is to reach all move the price. Planning ranges start from roof area, and the inspection adds those details.
Yes, when the rust sits on the surface and the steel underneath still holds a screw. We pressure-wash and wire-brush loose scale, prime bare spots, and repair laps first. Panels with holes or flaking edges get replaced before coating, since coating adds no strength to thin metal.
Often it does. Ice in a gutter holds meltwater at the eave, where it backs up under the last lap and finds any gap at a gutter strap or edge flashing.
We trace that water path, fix the lap and the drainage problem, and dry or replace wet material before coating the edge.
That depends on the product, the thickness applied, the preparation underneath, and the foot traffic and drainage on the roof. Rather than quote a number of years, we show you which areas will wear first and set up inspections so the roof gets recoated before bare metal shows again.
When panels shift across much of the roof, the screws and purlins underneath are the real problem, and coating will tear at every moving joint. We check the attachment first. If it can be restored, coating stays on the table; if it cannot, replacement is the better plan.
Enter your roof size for a free ballpark range, or call to set up an inspection of your building in York, PA.
