Hi all, hope you are well. During this lockdown I have started trying to lay my patio. I have chosen some silver grey granite slabs and have started to lay them. Here is my process:
6:1 sharp sand and cement mix, this has a small amout of SBR mixed into it. An SBR and Cement slurry is spread onto the back each slab. The slab backs were wet when I did this. I attempt to lay the slab before the SBR slurry has dried.
The issue I am having is that I appear to be suffering from reflective staining almost immediately. The slabs start to darken withing a few hours of being laid.
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