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Replies

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  mark harris April 10, 2013 at 7:50pm

  try london stone, very good quality,,
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  Kieran Ray April 10, 2013 at 7:54pm

  Speak to Steve from London stone, he is a member on here, he should be able to help with your decisions,
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  axeljk April 10, 2013 at 7:56pm

  I wuld second the vote for London stones limestone , if I remember correctly its very smooth from shotblasting.
  I'd not point black limestone with a white or beige mortar , keep it grey or black, less chance of staining and it doesn't show up the dirt as much.
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  Alice Meacham April 10, 2013 at 9:25pm

  Thanks for the advice about pointing - a very good point!
  
  axeljk said:

  I wuld second the vote for London stones limestone , if I remember correctly its very smooth from shotblasting.
  I'd not point black limestone with a white or beige mortar , keep it grey or black, less chance of staining and it doesn't show up the dirt as much.
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  Alice Meacham April 10, 2013 at 9:37pm

  Thanks for all your advice, I will try London stone as you suggest. Any ideas how dark Limestone performs in extreme weather (i.e. frost/ice)? I know it lightens as it weathers but has anyone had any experience of it cracking?
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  Alice Meacham April 10, 2013 at 9:40pm

  Thanks will do!
  
  Kieran Ray said:

  Speak to Steve from London stone, he is a member on here, he should be able to help with your decisions,
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  Paving_Dan April 11, 2013 at 2:22pm

  Hi Alice,

  The Marshalls products are all tested to exceed standards on strength, water absorption and freeze/thaw performance. You shouldn't have any concerns with quality on those stones, if you're worried about spalling and delamination. If your stone cracks for any other reason, look to the solidity of the sub-base as it's often to blame. If you want any further details, shoot me a PM or email chris.frankland@marshalls.co.uk (Chris manages the Natural stone paving products).

  Dan.
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  Steve London Stone April 11, 2013 at 6:05pm

  Hello Alice
  Of the three companies mentioned you are not going to have any quality issues. With all stone there are different grades of quality available, but all said companies will be sourcing first grade material, so no worries there.
  I cant recall a complaint of black limestone cracking , so I wouldnt worry about this particular issue. There are though a few VERY important things you need to consider with black limestone.

  1. It will lighten, so if you want to keep it dark use a quality sealant. I have tested every sealant out there and would always reccomend dry treat colour enhance.

  2. Black limestone and any other type of dolomitic limestone (Kota blue and kota brown) will react badly to acid. Whatever you do, do not use any acid based cleaners on black limestone. Acid will completely ruin black limestone, to the point where the only solution is a rip an relay.

  3. The above point means that it is aboslutely essential that any mortar spilt on black limestone during installation is instantly cleaned off with clean water and a cloth. If morar spills are allowed to dry on black limestone, you will never be able to remove them

  Good luck with it and give me a shout if you have any questions

  Steve
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  Craig McGibbon April 11, 2013 at 6:45pm

  Another point to consider we installed a black limestone and a blue/grey limestone patio last year - on revisits for other tasks it was really noticeable how they show the dirt from the general environment. Worth mentioning to the clients as a consideration.
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  Alice Meacham April 11, 2013 at 8:39pm

  Thanks Dan, that's really good to know, and straight from the horses mouth (so to speak). Your input is much appreciated.
  
  Paving_Dan said:

  Hi Alice,

  The Marshalls products are all tested to exceed standards on strength, water absorption and freeze/thaw performance. You shouldn't have any concerns with quality on those stones, if you're worried about spalling and delamination. If your stone cracks for any other reason, look to the solidity of the sub-base as it's often to blame. If you want any further details, shoot me a PM or email chris.frankland@marshalls.co.uk (Chris manages the Natural stone paving products).

  Dan.