Allow the paint to cure for three to four days for an exterior floor, or a full week for a concrete driveway, before you start to use the good-looking new surface. Laura Firszt writes for networx.com.

The driveway is in great shape, but the sidewalk has all sorts of places where the top surface of the concrete has crumbled, and I see the rocks below. The contractor has no clue how it happened.

Q: Tim, my builder is telling me to forget about using reinforcing steel or mesh in my concrete driveway and patio. He says he’ll just add an inch of thickness and that’s good enough. W… ...

Prime your concrete surface to fill in its pores and help paint adhere. Apply exterior grade concrete block filler, which will require 2 hours’ drying time and another 6 hours before it can be ...