Slabs - Slight movement in slabs

Patio flagstones (slabs), concrete flags, stone flags including yorkstone and imported flagstones.
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bennett
Posts: 9
Joined: Wed Jun 20, 2007 5:41 pm

Post: # 29581Post bennett

Can anyone help please, I have just had laid 60sq mtrs of smooth cut sandstone on a full bed of sand cement. I have noticed that some slabs when walked on bare footed sound slightly hollow and when tapped appear to show some movement or vibration. I am concerned that in time this will crack the pointing. Can anyone please advise if the above should be expected. for whats its worth as a layman it seems that some of the slabs have not adhered to base not sure if pva should have been coated to slabs before laying

Thanks
benzo
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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: # 29603Post Tony McC

There shouldn't be any movement, but as I can't see the site, I can't really comment on what has gone wrong.

The use of PVA is a nonsense for patio paving.
Site Agent - Pavingexpert
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