I am about to start a large paving job (have already completed a relatively small and easy one in the same area)
They are 600 x 400 sandstone pavers that will be laid into a mortar bed and then grouted.
The subform is an existing concrete slab which has expansion joints in it.
I know i have to continue the expansion joints up through the mortar bed and the pavers...
My question is what material do I use to fill the expansion joint afterwards so it looks good? They will be 10mm to match the grout lines.