Yorkstone setts - flexible block paving. - Compaction or jointing first?

[kenny155]

I am almost at the stage of laying my 72 - 75 mm thick (after careful checking of each sett) tumbled yorkstone setts. In accordance with the suppliers recommendation I plan to place them agaist each other without using spacers.
Would you recommend compaction or jointing first for this project.
Thanks in advance
Kenny

[lutonlagerlout]

compaction?
have you read the main site kenny?
setts are laid on a rigid base , I.E. cement /grit sand on top of a subbase
you would normally lay the setts then joint the area the next day
LLL

[kenny155]

Hi,
I have checked the site and dealt with the supplier.
If you look under stone pavers, stone block paving, natural paving you will find details and pictures of indian sandstone blocks. Mine look identical but are yorkstone.
I am not sure whether to do the compaction first or jointing first. I am also not sure if a rubber mat would be needed for the compaction.
Kenny

[TheVictorianCobbleCo]

Kenny I answered you in the later question, assuming that your setts were of even depth, and of a relatively uniform top surface - as would be if you were doing a VCC type cobble drive - variation in depth of product about 3mm max. Generally, 8 pass compaction on base, levelled to within 10 - 20mm, then 50mm sharp sand underlay compacted about 3 passes, once again levelled with straight edge and rails as flat as dammit, as there must still be some give. Then place setts, THEN humour all high standing/low sitting units due to variation in thickness. Then some people compact before putting in Kiln dried sand, others after - after possibly being better because it settles the grain between setts. BUT, as LLL correctly states, variations in sett depth prescribes you setting the units individually, and thus no compaction, so beware.
Stating the obvious, because these things have a way of biting you in the posterior, Before wacking make phlippin sure you have swept all traces of sand off the surfaces of your setts.