A trowel overlay is a cement-based resurfacing system applied by hand over existing concrete to create a custom finish. Because the material is shaped and detailed with trowels, it can be designed to resemble a variety of surfaces, including marble, natural stone, brick, tile, or a plaster-style finish. Color, texture, and trowel technique are adjusted during application to control how smooth, patterned, or detailed the final surface appears, allowing for a wide range of looks while maintaining the durability of concrete.