What texture is often desired on exterior flatwork surfaces for safety?

A broom finish is often desired on exterior flatwork surfaces because it provides slip resistance, which is crucial for safety, especially in outdoor environments where moisture, ice, or other conditions can create slippery conditions. This finish is achieved by dragging a broom over the freshly poured concrete before it sets, creating a textured surface with fine grooves that enhance traction underfoot.

The importance of safety on exterior surfaces cannot be overstated, as smooth or polished finishes can become hazardous when wet. Broom finishes help mitigate the risk of slips and falls, making them a common choice for sidewalks, driveways, and other outdoor installations.

Other textures, while they may have their applications, do not specifically provide the same level of slip resistance as a broom finish. For instance, a polished finish tends to be smooth and aesthetically pleasing but can be very slippery when wet. A textured finish might not have the same specific grip as a broom finish. Similarly, a sandblasted finish, while it can create a unique appearance, does not typically offer the same slip-resistant qualities that are essential for safe pedestrian use on exterior flatwork.