Granite slabs supplementary question

Patio flagstones (slabs), concrete flags, stone flags including yorkstone and imported flagstones.
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JonL
Posts: 6
Joined: Mon Jun 08, 2020 11:28 am
Location: Hampshire

Post: # 118863Post JonL

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

Tony McC
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Post: # 118887Post Tony McC

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