Sand in wide flag jointing?

7 Oct 2014
Reaction score
West Lothian
United Kingdom
Hi all,
I've laid a patio of flags (Tobermore Historic) on a dry sand/cement base, leaving 10mm jointing gaps. Am I OK to simply use kiln-dried sand on the joints, or is that only appropriate if setting the flags close-jointed? The patio is framed within a perimeter of walls. Any suggestions for the best jointing finish considering this base?
Thanks for any advice
Sponsored Links
Have you laid them tight and the spacers on the side of the flags are giving you the 10mm joint or have you also left a joint between the spacers? If you have laid them with the spacers touching then pointing them with mortar will be hellishly difficult. if you have laid a joint you may have a chance.

Really because of the wavy sides a slurry is the best thing to point these flags with as trying to firm in mortar is really hard.

So do you have them laid tight or spaced?
So do you have them laid tight or spaced?
Hi r896neo - they are tight in that the protruding parts are together. So it appears mortar is out - would sand or slurry be best?
joint gaps.jpg
Yea they are a stupid design really. when i lay them i leave the joints a little bigger so i can slurry point them.

Even laid as you have them you would need a very wet slurry product to get it into the small gaps.

You may be best going for dry sand and just live with the increased maintenance.

If you do go for a slurry something like rompox D1 or gtfk
Sponsored Links

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local