Dear all - some advice would be much appreciated.
Have read quite a bit but am still going round in circles a bit.
I am laying a 30m2 patio using 600 x 300 x 22 sawn polished rainbow indian sandstone.
Have already laid hardcore base and whomped this flat. Next step is sand/cement base. arranging slabs.
I'm wondering what to use for jointing. The slabs are only 22mm thick & I'd like nice thin joints. If I use a normal sand/cement mix my understanding is I need a reasonably wide joint 8-12mm? So I was looking at using Rompox or NCC compounds as I though these would allow athinner joint but also save money as the slabs are small and there are a lot of joints. A mate of mine is laying these and although he's got a lot of building experience he's not worked with sandstone or these compounds before.
I've read that the min depth is 30mm for these - is there an easy solution to getting thin (3-5mm) joints i.e. a compound you've used that just works (if base & stone put down) and just jointing to be done.
I don't want to rely on newbie instinct but I was imagining simply digging out 8mm channels in the base to give the 30mm depth - or am I missing the point?
Have read quite a bit but am still going round in circles a bit.
I am laying a 30m2 patio using 600 x 300 x 22 sawn polished rainbow indian sandstone.
Have already laid hardcore base and whomped this flat. Next step is sand/cement base. arranging slabs.
I'm wondering what to use for jointing. The slabs are only 22mm thick & I'd like nice thin joints. If I use a normal sand/cement mix my understanding is I need a reasonably wide joint 8-12mm? So I was looking at using Rompox or NCC compounds as I though these would allow athinner joint but also save money as the slabs are small and there are a lot of joints. A mate of mine is laying these and although he's got a lot of building experience he's not worked with sandstone or these compounds before.
I've read that the min depth is 30mm for these - is there an easy solution to getting thin (3-5mm) joints i.e. a compound you've used that just works (if base & stone put down) and just jointing to be done.
I don't want to rely on newbie instinct but I was imagining simply digging out 8mm channels in the base to give the 30mm depth - or am I missing the point?