Troweling A concrete finishing step where a flat metal hand tool is swept across the semi-dry surface to create a smooth, dense, and durable texture.
Troweling draws cement paste to the surface and seals the concrete pores, making it resistant to water infiltration. While a glass-smooth troweled finish is great for indoor garage floors, NYC public sidewalks require a non-slip texture. Therefore, troweling is immediately followed by a texturing step to ensure pedestrian safety in wet weather.
Frequently Asked Questions About Troweling
What does troweling do to concrete?
It sweeps a flat blade across the semi-dry surface, drawing cement paste up and closing surface pores for a dense, smooth finish.
Should a sidewalk be finished smooth?
No. A slick troweled finish is dangerously slippery when wet. Public sidewalks require a textured, slip-resistant surface.
How does troweling fit into the sequence?
It follows floating and precedes the broom finish, which restores the required traction.
Can over-troweling damage concrete?
Yes. Working the surface too early or too much can trap bleed water and cause delamination, scaling or dusting later.