Metal Roof Coating & Rust Repair in Charlotte, NC

When a Coating Is the Right Answer

An older metal roof that is structurally sound but has lost its paint, shows surface rust at cut edges and fastener heads, or seeps at seams and laps, does not necessarily need replacing. A coating system restores a continuous, weather-tight, reflective membrane over the existing panels. It works on painted steel, bare Galvalume and older galvanised roofs - the tin roofs on Concord's and Kannapolis's mill-era homes and the R-panel on Mooresville's shops are the classic candidates.

When It Isn't

Rust-through, where a panel has holes rather than surface oxidation. Rotten or wet decking beneath. Panels that have lifted or lost their fasteners, which need a screw replacement first. And stone-coated or granulated surfaces, which need replacement panels rather than paint. We walk the roof and say which category it is in before quoting, because a coating over a failing substrate is money down the downspout.

The System

Pressure wash to remove chalk, dirt and algae. Rust converter on oxidised areas. Every fastener head and every seam and lap reinforced with a fabric-embedded mastic, which is the step that turns a paint job into a roof system. Then two coats of an elastomeric acrylic or a silicone topcoat, sprayed or rolled to a specified dry film thickness that we write on the quote. Acrylic is cheaper and easier to recoat later; silicone tolerates ponding water and suits the low-slope rear roofs on ranches in Mint Hill and Matthews. White or light-grey topcoats are highly reflective, which is a measurable help on a workshop or a home with a hot attic.

Life and Cost

Ten to twenty years depending on product and film thickness, after which most systems can be recoated without stripping. At $2 to $4 per square foot installed it runs a quarter to a third of a new standing seam roof, and on a screw-down roof in decent shape it is usually the best value on the table. We coat roofs across the metro, including the older housing on the Gaston side in Gastonia and the mill-town stock of Rock Hill.

How long does it take? Two to three days including prep and cure between coats, weather permitting.

Frequently Asked Questions