Commercial Roof Coating in Metairie, LA

Estimated ranges for 2026. Acrylic runs roughly $1.50 to $3.50 per square foot installed, acrylic elastomeric $1.75 to $4, polyurethane $2.50 to $5 and silicone $2 to $6, with published figures varying widely by source and by specified thickness. Those are market estimates. The written specification on your building, after the survey, carries the real figure.

It depends on four things and the first is decisive. How much of the insulation under the membrane is wet, whether the seams still hold, whether the roof drains, and whether the existing surface will accept a coating. A membrane that is weathering but sound is an excellent candidate. One with widespread wet insulation is not, and coating it seals the water in.

No, and anyone offering to should be asked what happens to the water. Wet insulation does not dry out under a coating, it has already lost its thermal value, and the failure arrives on schedule regardless of what is on top. Isolated wet areas are cut out and replaced as part of the prep. Widespread moisture means the roof needs recovering or replacing.

Often silicone, because a lot of older Metairie flat roofs hold water somewhere and silicone tolerates standing water better than the alternatives. Acrylic is cheaper, more reflective and easier to recoat, and it is the better choice on a roof that drains properly. The decision is made on the drainage rather than on the price per square foot.

It is the thickness of the coating once it has cured, and it is what the warranty is written against. It comes from the wet application rate and the coating's volume solids: a product at 50 percent volume solids laid at 20 wet mils dries to about 10 dry mils. Two quotes can both say two coats and deliver very different thicknesses, which is why the specification states mils and gallons per square.

Days rather than weeks on most Metairie roofs, typically one to five working days depending on area, how much prep the surface needs, access and the weather, and it is an estimate confirmed at survey. Many buildings are able to trade through the work, which is agreed as part of the programme rather than assumed. Water based coatings need a dry window to cure, so the work is staged in sections around the forecast rather than opening the whole roof at once.

Manufacturers write warranty terms in years against a specified dry film thickness, the prep and often an approved applicator, and terms commonly run in ten, fifteen and twenty year tiers. What you get in practice depends on the thickness actually applied and on the roof underneath, which is the argument for specifying mils rather than coats.

Yes, and that is a large part of the appeal. At the end of a coating term a compatible recoat generally restores the system without a tear off, provided the substrate has been maintained and the original system is still sound. That makes the whole life cost look very different from a membrane that has to be removed and landfilled.

Only if the leak is coming through a weathered surface. If it is coming in at a seam, a curb, a drain or a penetration, those are repaired as part of the prep before any coating goes on, because a coating over an unrepaired defect is a coating over a leak. Where the source is not obvious, a leak detection survey comes first.

Do not assume you do not. The parish publishes a roofing exemption for one and two family dwellings only, with no commercial equivalent, and its minor repairs clause allows ordinary repairs without a permit only with the approval of the Building Permits Department, decided case by case. Big Easy Roofing confirms the scope with the parish before starting rather than guessing.