The concrete floors of the balconies are to be painted. The balconies were exposed to the elements for several years, but no damage has been found yet. Please list the steps for applying the coating to the concrete floors of the balconies one by one

These steps are as follows:

1) cleaning the floor with hot water under pressure;

2) colorless priming, diluted epoxy resin;

3) application of a layer of polyurethane varnish;

4) application of a finishing layer of polyurethane varnish.

In this case, epoxy varnish can also be used as the second and last layer, but it does chalk in the open air.