Which property of paint indicates how well it can cover an existing surface?

Opacity is a key property of paint that indicates its ability to cover an existing surface effectively. It refers to the degree to which a paint can obscure the underlying color or pattern of the surface beneath it. High opacity means that the paint will adequately hide what is underneath with fewer coats, resulting in better coverage and a more uniform finish.

When a paint has high opacity, it minimizes the need for additional layers, making the application process more efficient and cost-effective. This is particularly important in both residential and commercial applications where achieving a certain aesthetic through uniform color is crucial.

The other properties mentioned play different roles: gloss level refers to the shine or sheen of the paint finish, texture pertains to the surface feel or appearance once dried, and adhesion concerns how well the paint sticks to the surface. While all these properties contribute to the overall performance and appearance of the paint, it is the opacity that specifically addresses the ability to cover what is already there.