Laid a sandstone patio a week ago and today found one stone which I managed to lift with my hand. The stones were laid on a base of sand/cement which was a full bed laid wet (6:1 mix in a mixer). I found the base to be fairly easy to lift up with my SDS hammer drill. With the larger chunks I lifted off, some I was just about able to break up in my hands. I thought a week later it would be hard enough not to be able to do this!! So I'm a little surprised as I was planning to grout it in the next day or two using EasyJoint which requires lots of water.
So normally how long should I be keeping off this patio? BTW the 6:1 mix was a requirement of EasyJoint grout compound. Any suggestions on what I should do, was the mix too weak or should I be leaving it for another few weeks? I have previously laid a patio on a stronger 4:1 mix and grouted using my own sand/cement mix and had absolutely no problems. Can't remember how long Ieft that before grouting though.
Any guidance would be appreciated.
So normally how long should I be keeping off this patio? BTW the 6:1 mix was a requirement of EasyJoint grout compound. Any suggestions on what I should do, was the mix too weak or should I be leaving it for another few weeks? I have previously laid a patio on a stronger 4:1 mix and grouted using my own sand/cement mix and had absolutely no problems. Can't remember how long Ieft that before grouting though.
Any guidance would be appreciated.