eros_poli Posted August 19 Share Posted August 19 Hi, Struggling to find any sage advice out there on the thickness of the mortar bed to use when laying limestone slabs. This is internal, and we're thinking of using 15mm Travertine slabs. These will be laid on a Mike Wye-supplied Geocell/Limecrete floor, which will be finished with nhl5 lime slab. I assume it would be best to also use NHL5 as the bed for the slabs, and am guesstimating that 20mm would be a good thickness to aim for. Should it be thinner...? Need to know for the excavations working backwards from finished floor level. Cheers! Joe Link to comment Share on other sites More sharing options...
nod Posted August 19 Share Posted August 19 The same thickness as what your laying 15 mil Link to comment Share on other sites More sharing options...
nod Posted August 19 Share Posted August 19 54 minutes ago, nod said: The same thickness as what your laying 15 mil Don’t forget to seal them Link to comment Share on other sites More sharing options...
SteamyTea Posted August 19 Share Posted August 19 24 minutes ago, nod said: Don’t forget to seal them Will that not defeat the reasons for using lime? Link to comment Share on other sites More sharing options...
nod Posted August 19 Share Posted August 19 19 minutes ago, SteamyTea said: Will that not defeat the reasons for using lime? I definitely wouldn’t use lime Link to comment Share on other sites More sharing options...
SteamyTea Posted August 19 Share Posted August 19 3 minutes ago, nod said: I definitely wouldn’t use lime Nor me, but no matter how you show that cement/concrete mixes can have the same properties, there is no changing peoples minds, they are still stuck in Roman times. This is a bit different as the floor is already there, so too late for education. (sorry to be blunt, but this fixation with an inferior product must stop) Link to comment Share on other sites More sharing options...
jayc89 Posted August 19 Share Posted August 19 Assuming your limecrete floor is NHL5, you've lost (pretty much) all breathability already, so whatever you use as your adhesive won't really matter. Link to comment Share on other sites More sharing options...
Roger440 Posted August 19 Share Posted August 19 (edited) 45 minutes ago, jayc89 said: Assuming your limecrete floor is NHL5, you've lost (pretty much) all breathability already, so whatever you use as your adhesive won't really matter. This ^^^^^ The important part of your build up, assuming its a a suitably old house is the geocell layer. Edited August 19 by Roger440 Link to comment Share on other sites More sharing options...
eros_poli Posted August 20 Author Share Posted August 20 13 hours ago, nod said: The same thickness as what your laying 15 mil Thanks for the only reply that's actually answered the question! Link to comment Share on other sites More sharing options...
nod Posted August 20 Share Posted August 20 40 minutes ago, eros_poli said: Thanks for the only reply that's actually answered the question! Your welcome Link to comment Share on other sites More sharing options...
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