Smoothing mortar onto a damaged concrete stair is NOT a repair.
And I see it all the time.
It will not work.
It will not last.
It will not stay smooth and solid.
It will crack.
It will chip.
It will look worse than it did before the "repair."
Why do people do it?
Because they do not read the instructions on the bag!
Homeowners go to the home center. They know what they want. They see a couple of different bags of mortar. They choose which one they want. They go home. And they get to work!
Sidewalks are 4" thick for a reason. Concrete needs to be about that depth, or more, to stay solid and not react to hot and cold cycles.
You cannot, that is CANNOT, veneer concrete with a thin mortar patch. Even if you make it look cute!
It will react to hot and cold cycles, not to mention weight!
My recommendation: hire a professional! Or know what you are doing BEFORE you attempt doing it! And when all else fails, READ THE INSTRUCTIONS! And if you're buying a house that is made ready to sell by a homeowner who has done lots of cute things like this, hire a home inspector! And learn about what you want to buy.
Jay Markanich Real Estate Inspections, LLC
Based in Bristow, serving all of Northern Virginia.
Office (703) 330-6388 Cell (703) 585-7560