Which finish is common for exterior slabs to provide slip resistance?

• A. A smooth troweled finish.
• B. A polished finish.
• C. A broom finish.
• D. A brushed metal finish.

Answer: (C)

Surface texture is what controls slip resistance on exterior concrete. A broom finish provides traction by leaving a field of small, random grooves across the surface while the concrete is still plastic. Those ridges create grip for feet and shoes and help channel water away, reducing the chance of slipping when the slab is wet or dusty. It’s durable, easy to apply, and economical, which is why it’s the common choice for exterior slabs. In contrast, a smooth troweled finish tends to be slick when wet, a polished finish is very slick, and a brushed metal look isn’t a typical concrete surface finish.