Overlaying concrete steps and terrace with slate - Advice please

Patio flagstones (slabs), concrete flags, stone flags including yorkstone and imported flagstones.
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Michele
Posts: 2
Joined: Fri Apr 21, 2006 10:08 am
Location: London

Post: # 11619Post Michele

Hello
I'm a complete paving novice and would like some advice regarding cladding my existing concrete terrace, path and steps with slate. The concrete is around 30 years old and is in good nick with no cracks. I have already read your advice regarding the pitfalls of laying paving over an existing sub-base as regards to the DPC etc, however my property is on a hill and the area I am proposing to pave over is well below said DPC (approx 2m). Please could you advise me on; a) the thickness of slate I should use, b) the relevant ratio of sand:cement I should use in the bedding layer and c) What mix I should use on the steps, incidentally I'm not planning on cladding the risers. Any advice would be most gratefully received.. :D
Michele Egerton
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Tony McC
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Location: Warrington, People's Republic of South Lancashire
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Post: # 11640Post Tony McC

Do you really mean slate, or do you mean some other form of stone? Many thin-bed sandstones are mistakenly referred to as slate.

I'd look for summat like...

30-40mm slate/stone laid onto a bed of 20-40mm Class II mortar (4:1) with SBR or Ronafix added for the step treads.
Site Agent - Pavingexpert
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Michele
Posts: 2
Joined: Fri Apr 21, 2006 10:08 am
Location: London

Post: # 11728Post Michele

Thank you that's really helpful, as I said, I'm a complete planning novice so I'm not too sure about which paving to use I had only stated slate from an asthetic point of view. I shall have a look at sandstone.
Thanks again for your suggestion
Michele Egerton
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