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Posted: Sat Feb 01, 2003 9:08 am
by alec
How can I lay concrete flags on natural stone crazy paving
Posted: Sun Feb 02, 2003 2:32 pm
by 84-1093879891
Can you give us a bit more info? Do you want to lay concrete flags on top of an existing crazy-paved surface?
Have you read the page on
Damp Proof Courses? Will you have sufficient room to accommodate the concrete flags plus the requisite bedding?
Posted: Sun Feb 02, 2003 10:53 pm
by alec
Yes I want to lay Concrete flags on top of existing natural stone crazy paving. If the existing crazy paving is stable enough could I lay on a bed of mortar? I realise I need to check the height of the DPC.
Posted: Mon Feb 03, 2003 11:46 am
by 84-1093879891
You've got the basic idea right, but I recommend a semi-dry mix, rather than a wet mortar. It gives you more working time, it's cleaner to work with, and it's less likely to cause the flags to 'float' during the laying process. 8:1 or 10:1 grit sand to cement should be strong enough.
Don't forget to allow for drainage, and to point the joints with a Class II mortar, as described on the
Pointing page.