FWIW, I painted a cast concrete fireplace surround and began with a
sealer recommended by the local Ace Hardware guy (who seemed to know what
he was talking about). It was thick and had a lot of texture to it.
When I showed him my color choices he added the colorants for one of my
choices to the sealer so I didn't have to buy a whole 'nother can of
paint. A knowledgeable paint seller might be your best bet for advice.
Christi Fennell wrote: > > I have not had any luck painting just the outside of the containers. > The water leaks through eventually and > flakes the paint off. I have sealed the inside with a concrete sealer > and then painted the outside with concrete paint. You can get > concrete paint at any hardware, but the color choices are limited.
> > A teacher came to me today and asked me to tell her what she needed > to do to > > paint on some concrete planters outside in a courtyard at school.