We have a concrete patio that is somewhat shaded by the house from the afternoon sun.
We have a problem with green gunk growing on the surface... because after it rains, the water does not get the sun to dry quickly... so green gunk.
After we power wash the patio, is there something we can put down to help seal or inhibit the growth. I think I've read about the usual sealers being not good as they cause the concrete to become slippery when wet... along with the need of the concrete to "breathe"..