Presuming you bought the cement in a plastic bag, not the paper bag… then just make sure you really try to seal the open edge up by rolling it over and sticking a brick on top. It will absorb moisture out of the air and the next time you go to use, it will have set like a rock.
Presuming you bought the cement in a plastic bag, not the paper bag… then just make sure you really try to seal the open edge up by rolling it over and sticking a brick on top. It will absorb moisture out of the air and the next time you go to use, it will have set like a rock.