How to Resurface a Concrete Balcony
- 1). Repair any cracks up to 1/8-inch wide by filling it with concrete resurfacer. Smooth out with a putty knife. For cracks up to 1/2-inch wide, fill in with concrete repair caulk. Squeeze the caulk with a caulking gun and smooth it out with a putty knife. Let it dry.
- 2). Mix concrete according to the manufacturer's directions in a plastic bucket.
- 3). Spread the concrete mix onto the concrete balcony and smooth it out with a flat steel trowel. Press down hard and evenly to make sure the concrete seeps into every crevice.
- 4). Use a medium-bristle push broom to texture the wet concrete to create a slip-resistant surface.
- 5). Let the concrete dry for 24 hours.
- 6). Prime and paint as needed, then seal the surface with a water-borne masonry sealer.