Rejointing edges with resin

[JohnBeeBee]

Hi,

I've had the old sand/cement mortar taken out of the joints of my indian stone patio and would like to replace it with a resin mortar. The patio has a run of 30cmx30cm flags all the way along its edge that step down onto another run of 30cmx30cm flags which then leads on to the lawn. The upper flags overhang 30cmx15cm front facing flags by about an inch. As the last inch of the gap between each upper flag effectively has no support beneath it I can't figure out how I can point the patio including the gaps in the unsupported overhang without the resin just running out as the resin slurrys are obviously very runny. Does anyone have any tricks to keep the resin in place while it goes off (e.g. putting some gaffer tape underneath to support it). Would the resin mortar even support itself once dried? Would the gaffer tape come off easily?

Does anyone also have any suggestions on which resin mortar I should use? I considered using the VDW 840+ as that could be used dry in the unsupported gaps in the overhang which I thought might be better than runny mortar for those bits. Ideally though I would like to use a two part resin rather than polymeric so that I can pressure wash once or twice a year which I understand 840+ won't survive. However if 840+ would be best to solve the unsupported gap problem then I can forgo the pressure washer.

Thanks

John

[JohnBeeBee]

Found the Duck tape idea being used on this page (http://www.pavingexpert.com/point_ncc03.htm) so looks like a plan . Hopefully it will support the end of he joint from underneath too. The VDW 800 is pressure washer resistant too so think I'll go with that. Does anyone know if it's OK to use on kandla grey indian sandstone?

[lutonlagerlout]

aluminum sticks a lot better than duck tape, get the 100mm stuff if you can
cheers LLL

[JohnBeeBee]

Good idea. Is that the stuff used for joining foil backed insulation boards (e.g. kingspan) together? Would probably follow the rough edge of the slabs better to less resin leakage. Think I actually have some of that somewhere.

Cheers