Columbus Commercial Metal Roof Coating Contractor

Plan on roughly $2.50 to $4.00 per square foot for coating a commercial metal roof in Columbus. Clean panels with few openings sit near the bottom of that range. Heavy rust, many failed seams and screws, extra coats, and tough lift access move it up. Wet insulation sections get replaced first, and full replacement plans at about $5 to $8.

Each fastener is handled on its own before any coating goes down. Screws with cracked washers get swapped, stripped holes get a larger screw, and every head is covered with sealant or a cap. Machinery shakes plant roofs, so tightness is checked roof-wide. The field coat then runs over all of those sealed heads as one layer.

Rust is scraped back to firm steel, cleaned, and primed with a rust-inhibiting primer. Wire brushes or a pressure washer remove loose scale. That primer grips the treated metal and stops corrosion from creeping under the topcoat. Heavier rust gets two primer passes, and the coating waits until the primer has cured.

Restoration runs in a fixed order. An inspection and moisture survey come first. Cleaning, rust treatment, and replacement of bad screws and flashing follow. Seams then get fabric and sealant. Finally the coating is applied in one pass or several until it reaches the specified thickness, and the existing panels stay on the building the whole time.

For a commercial alteration permit, the Columbus Building Department asks for detailed building plans, one set in digital form and one on paper. Incomplete applications go back, and the inspector can ask for more on larger scopes. Plan review costs 25 percent of the permit fee, so ask early whether a coating job counts as an alteration.

Drips that show up on cold mornings with no rain usually point to condensation on the panel underside. Drips that follow storms or snowmelt point to a leak at a screw, lap, or curb. A roof walk paired with an inside check of the purlins and insulation sorts out which one you have before any coating is planned.