I am to lay some dark gray 100mm square cobbles that are on a roll in
the garden which firstly means the gaps between them are quite wide and
secondly will need to be grouted with something also in a darkish gray.
Can anyone recommend where to get something appropriate? I have
previously used some dark gray grouting for internal tiles but not sure
if this would be appropriate for this outside job.

On Fri, 04 Nov 2005 10:06:27 -0000, Barnsey
wrote:

I am to lay some dark gray 100mm square cobbles that are on a roll in
the garden which firstly means the gaps between them are quite wide and
secondly will need to be grouted with something also in a darkish gray.
Can anyone recommend where to get something appropriate? I have
previously used some dark gray grouting for internal tiles but not sure
if this would be appropriate for this outside job.

Cement based grouts are suitable for exterior use. If you have doubts call
the technical helpline. Probably you will be suggested a pointing mortar,
which is designed for wider joints, typically up to 20mm.

John Schmitt

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I am to lay some dark gray 100mm square cobbles that are on a roll in
the garden which firstly means the gaps between them are quite wide and
secondly will need to be grouted with something also in a darkish gray.

Personally I would use Ardex-Flex-FL grout. This is cement based, available
in grey and is suitable for external locations and standing water if
drainage is less than perfect.

http://www.ardex.co.uk/ardexflex_fl.asp

An alternative is Ardurit GK (probably with Ardion 101 admix for additional
water proofing)

http://www.ardex.co.uk/ardex_gk.asp
http://www.ardex.co.uk/ardex_e101.asp

Read the data sheets and see which is best for your specific application, as
only you know all the details.

Christian.