Wobbly sandstone slabs help - Wobbly and hollow sounding slabs

Patio flagstones (slabs), concrete flags, stone flags including yorkstone and imported flagstones.
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Moshi
Posts: 6
Joined: Wed Jul 13, 2016 6:57 pm
Location: Reading

Post: # 113843Post Moshi

Hi, I have had some Indian sandstone slabs laid.
They were laid on a dry 6:1 sharp/cement mix but have not yet been grouted.
I checked this morning before the guys come back to grout and several of them have a slight wobble and if I tap them with a small rubber mallet some of them sound hollow underneath.
Obviously I feel this is a re-lay job but can anyone suggest the easiest way to sort this out?
I am wondering whether to scrape an inch of the screed and put a wet mix down, or even just do a bit more dry mix and relay each slab myself individually with a light scattering underneath to take up the hollows, thoughts anybody? Any advice massively appreciated!
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lutonlagerlout
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Joined: Fri Aug 04, 2006 12:20 am
Location: bedfordshire

Post: # 113844Post lutonlagerlout

its rip up the lot and relay I am afraid
wobbles now rocking later
LLL
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Tony McC
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Joined: Mon Jul 05, 2004 7:27 pm
Location: Warrington, People's Republic of South Lancashire
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Post: # 113847Post Tony McC

FAQ - How to Fix Loose Flagstones
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