Round limestone sett patio - A couple of general questions

[matthewmoore3]

Hi.. I have a couple of questions about a little round limestone sett (100mm, 25-40mm thick) patio im working om..

For the outer ring is it advisable to use a wet or dry mix?

Is there any reason I cannot put the setts very close together?

Can I use jointing sand or is it more advisable to use a resin jointing medium?

Cheers!

[lutonlagerlout]

it should all be laid on a semi dry mix
but use a bond bridge
larsen do a good slurry mix to coat the back of the setts as you go
joints ideally should not be touching and IMHO should not be less than 3-4mm
a good resin 2 part mortar will stand the test of time
VDW 815 and romex D1 are the best I know of
cheers LLL

[matthewmoore3]

Ok, thanks LLL

What is the reason it isnt good to have the setts touching?

The setts are split, so the shapes are slighly irregular, and i quite like an organic approach where some may touch here and there, and some not

[Tony McC]

Setts, or any paving units, should not touch because this can result in spalling of the arris, UNLESS the units in question have been cut or moulded to use in a butt-jointed format. So, for example, many block pavers oor small element flagstones which have chamfered arrisses may be laid butt-jointed (but even then, close jointing is preferred.

Explanation of jointing terminology can be found here