Posted: Thu Jun 11, 2020 9:56 am
Hi, as you'll see from my previous thread I'm staring down the barrel of a complete tear up and relay of some granite slabs. To try and avoid the same mistakes again, I have a few technique questions:
1) Previously when I laid the slabs I created a screed bed by running a piece of timber over the surface, guided by side timbers (like rails) to create a flat surface in the wet bed. Is this the best way to do it, or should I be creating something more choppy using a trowel?
2) When painting the SBR slurry on to the underside of the slabs, do I then try to get the slab down as quickly as possible or do I wait a few minutes for the slurry to stop dripping or become a bit tacky?
3) When laying the slabs down, should they be gently placed onto the bed and left or should I be creating some downward pressure (over and above the weight of the slab) to push the slab onto/into the bed?
4) When doing an area, it seems very hard not to need to put a foot on slabs you've previously laid, maybe hour or so ago, when laying others. Is this a problem, and if so, what tricks are there to avoid it?
Thanks,
Jon
1) Previously when I laid the slabs I created a screed bed by running a piece of timber over the surface, guided by side timbers (like rails) to create a flat surface in the wet bed. Is this the best way to do it, or should I be creating something more choppy using a trowel?
2) When painting the SBR slurry on to the underside of the slabs, do I then try to get the slab down as quickly as possible or do I wait a few minutes for the slurry to stop dripping or become a bit tacky?
3) When laying the slabs down, should they be gently placed onto the bed and left or should I be creating some downward pressure (over and above the weight of the slab) to push the slab onto/into the bed?
4) When doing an area, it seems very hard not to need to put a foot on slabs you've previously laid, maybe hour or so ago, when laying others. Is this a problem, and if so, what tricks are there to avoid it?
Thanks,
Jon