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Installation of limestone slabs. Screed or wet mortar base?

BrokenArrows · 2021-04-26 06:49:18

So i hired some guys to install limestone slabs on an existing concrete base. They have been unreliable from the very beginning not showing up until 5 days after the initial date. Anyway, after the first day of work and then not showing up for a few days im considering telling them to stop and just leave it as im not happy…

26-04-2021 6:49am

#1

BrokenArrows

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Join Date: February 2005

Posts: 6935

So i hired some guys to install limestone slabs on an existing concrete base.

They have been unreliable from the very beginning not showing up until 5 days after the initial date.

Anyway, after the first day of work and then not showing up for a few days im considering telling them to stop and just leave it as im not happy with the quality, levels etc.

One question i have is they are laying a screed bed of about 4:1 sharp sand and cement. Of the few slabs they have laid none of them have actually stuck to this bed after 48 hours. I pushed on one of them and it just moved and lifted easily.

Should slabs actually stick to a screed bed or do they just sit into it?

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