Painting a Garage Floor

Submitted By
Tom Kraeutler
Answers
1 expert, 0 community
Q:
My mother’s home was built in 1991, and the concrete garage floor was evidently etched, primed and painted with concrete paint. By 2001, it was still in good shape, and cleaned and repainted, but now it’s peeling a lot!
 
The contractor says that all he has to do is power wash it to remove the grease, “feather sand” the peeling areas and apply primer to them, and then apply the concrete paint. Is this the correct method of repair for the double-car garage’s floor? The contractor has quoted us $350 to do the job.