Duravel TCO™ - Thin Concrete Overlay Gray

Duravel TCO is a flexible thin concrete overlay for interior or exterior surfaces, supplied here in gray in 40 lb bags. It renews worn concrete with a smooth finish or a custom texture, and it is the product to specify for microcement work on floors and walls.

An overlay is not a coating and the distinction changes the job. A coating is a film over concrete. An overlay is cementitious material that becomes the new wearing surface, which means a tired, scarred, patched slab can be rebuilt rather than covered up and hoped for. On a floor that has been through several tenants and several repairs, that is usually the only path to a finish anybody would accept.

TCO is the thin, fine end of the overlay family. It is what you use when the goal is a smooth, jointless, contemporary surface: microcement floors, feature walls, stair treads and vertical work where a coarse mix would look wrong and sit too proud. Because it is flexible, it suits applications where a rigid, brittle skim would be the weak point. The same material can be finished smooth or worked into a custom texture, so the look is decided by the trowel and the crew rather than by buying a different product.

Interior or exterior is stated by Duravel, which is a real advantage. Continuing the same microcement finish from an interior living space out to a patio without switching materials is exactly the detail architects ask for and most products cannot do.

Bond is everything with a thin overlay. Thin material has no mass to hide behind, so a clean, sound, properly profiled substrate is not optional. Duravel ECP cleans and profiles concrete ahead of overlays. Address moving cracks and failing concrete before you overlay, because an overlay follows the slab it is bonded to. Cured TCO takes stain and needs to be sealed like any decorative concrete surface. Follow Duravel's mixing, thickness and cure instructions for your installation.