Flat Roof Coatings

Elastomeric Coating Application by Coating Spreader

A flat roof coating restores your roof with a seamless membrane. It repairs leaks by sealing cracks and seams. Applying an elastomeric coating is a cost-effective way to preserve your metal roof without the cost and disruption of tearing off an existing roof and replacing it.

Frequently Asked Questions

Flat roofs are typically coated anywhere from 6 to 12 years after installation and much earlier with UV degradation. 

Service life varies with environment and type of coating. Warm, humid and corrosive environments may necessitate an earlier recoat.

Once coated, consider re-coating every 10 to 15 years. Recoats can cost less since the contractor is just spraying another layer and not doing any of the usual prep.

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Types of Flat Roof Coatings

PROS: Our butyl is a solvent-based, vapor barrier coating. It has extremely high elongation.

CONS: Highest cost per mil due to material cost and low solid content.

PROS: Polyurethanes have better tensile strength and impact resistance with good resistance to ponding water. This makes it suitable as a base coat and for sealing fasteners, flashings and waterproofing gutters.

CONS: Pricey compared to other coatings.

PROS: Silicones have better weatherability than other coatings with little to no erosion. It performs well in ponding water which makes it a popular choice on flat roofs.

CONS: Silicones are softer coatings and do not have the impact resistance of polyurethanes. It also holds dirt and is usually not recommended for surfaces that are visible from the street. Re-coats can only be made with silicone.