Metal Roof Coating Systems Used in Tallahassee
The coating is the last coat in a restoration, and the prep underneath is most of the work. Two chemistries cover most metal roofs here, with rust treatment, seam work and plain repainting as the other choices.
Silicone Coatings
Silicone is the coating most used in commercial roof restoration, mainly because it shrugs off standing water and UV. One manufacturer notes it often goes on in a single coat without a primer. The trade-offs are real: it picks up dirt, usually within 6 to 12 months, and it gets very slippery when wet, so anyone servicing the roof later needs care.
- Installed cost: $1.50 to $4.50 per sq ft (HomeGuide)
- Rated life: 10 to 15 years (HomeGuide)
- Best fit: low-slope shop and porch roofs where water sits after a storm
Acrylic Elastomeric Coatings
Acrylic is water-based and cheaper. It holds its color better than silicone, which is why one coating maker recommends it for steep metal roofs that people actually look at. It doesn't tolerate ponding water, and it slowly loses film thickness as it ages.
- Installed cost: $0.50 to $3 per sq ft (HomeGuide)
- Rated life: 7 to 20 years (HomeGuide)
- Curing: needs air temperatures of 50°F or higher
Tallahassee's annual mean temperature is 68.4°F, so cold rarely stops a job here. Rain is the bigger scheduling problem: the city averages about 59 inches a year, and a fresh coat needs dry hours to cure.
Rust Treatment and Primer
Coating over live rust traps it. Small rust spots get sanded or brushed down, primed and painted. Panels rusted through have to be replaced before anything goes on top. HomeGuide prices rust and corrosion repair at $300 to $3,000, depending on how far it has spread. On an older 5V or corrugated roof, look hardest at the panel laps and the lower edge, where water lingers.
Seam and Fastener Prep Before Coating
Every exposed screw is a possible leak under a new coating, so the fasteners come first: backed-out screws get replaced, usually with a larger size, and dried-out washers go with them. Open laps are resealed. HomeGuide puts seam resealing at $250 to $1,100. A coating applied over loose screws looks good for a season and then cracks at every fastener line.
Repainting Faded Panels
When a roof is watertight but the paint has chalked or faded, a repaint may be all it needs. HomeGuide prices metal roof painting at $1.20 to $2.70 per square foot, which covers cleaning, priming or sealing, and paint. Paint restores color; it doesn't add a membrane, so it won't stop a leak that coating might.
Why Tallahassee homeowners call Tallahassee Metal Roof Co.
- Free referral, no charge to homeowners
- Your request reaches a single metal roofing contractor, not a list
- Ask for panel, gauge and Product Approval number in writing
- Free, no-obligation estimate from the roofer
When a Metal Roof Restoration Is Worth It
A coating extends a roof that still has structure left. It doesn't rescue one that's rusted through or has a soft deck. These are the questions to ask before you pay for one.
Panel condition
Rust-through, torn laps or a deck that gives underfoot point to panel replacement, not a coating. See metal roof repair.Whole-roof price
HomeGuide puts a full recoat at $750 to $10,000, set mostly by roof size, rust and access.Heat
One coating manufacturer measures fresh white acrylic and silicone at 80% to 90% thermal reflectance, against 10% to 20% for the uncoated roof in its example. Silicone loses some of that as it collects dirt.Film thickness
Coating thickness is measured in mils, and acrylics lose thickness as they age. Ask for the product, number of coats and target thickness in writing.Original finish
A roof with a factory PVDF finish that's still intact usually needs cleaning, not coating. See standing seam metal roofs.
Under Tallahassee's oaks and pines, which cover 55% of the city, a coated roof also needs more cleaning. Leaves and pine straw left on a silicone roof stain it and hold moisture against the coating.
How a Coating Request Works
Tell us what the roof is (panel type, rough age, where it leaks or rusts). That goes to the contractor we refer restoration work to, who can set up a look at the panels. Ask for a written scope that lists the rust treatment, the fastener work, the coating product and its coat count, and how the roof will be cleaned first.