Seamless/tightly butted patio joints - how to grout?

hi need some product advice please! I saw a pic of a nice patio with very small/tightly butted up grout joints. By this i mean a mil or two.

So laid my patio as tight as they would go.

The problem is is that i cant get any standard sand down there to fill the fine gaps. So i have a fine gap around all the slabs. Some of them have a tiny bit of movement so really want to fill the joints to hopefully stop this happening. I have heard of a very fine grout powder which can be brushed in?

thoughts and or specific product revommendations please?

thanks in advance


  • pansyfacepansyface PEAK DISTRICT DerbyshirePosts: 16,150

    Our builder set some slabs like this on a thick base of sand. He said that was it, nothing more needed. Two years on it seems that he was right.image

    Apophthegm -  a big word for a small thought.
  • BobTheGardenerBobTheGardener Leicestershire, UKPosts: 8,240

    Greg, you can get kiln-dried fine sand for just that purpose and simply brush it in when the weather is dry.  Here a link to the Wickes version:


    A trowel in the hand is worth a thousand lost under a bush.
  • Lupin 1Lupin 1 Posts: 8,916

    OH bought something that is a fine mix but when wet it does set like cement I needed to tip it in the gaps with a spoon. Sorry I don't remember what it was but it was bought from B&Q on pensioner's day image  

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