Marker pen over indian sandstone

[ilovesettsonmondays]

Hi been doing a large Indian stone patio over the last few days about seventy m2. Ended up running out of sand needing a couple of bags to lay last few slabs. As it was peeing down this morning I left the apprentice on job to clean off the slabs with a jet wash ready for pointing next week. When I come back I seen on a few slabs dark blue blotches of ink. The marker pen was suddenly missing too. Don't know what's gone on but the apprentice was keeping stumbled. Anyone know of my thing to shift the ink. Don't really want to change slabs. Coated in sbr and on a mortar bed a nightmare to get up. Thanks in advance

[dig dug dan]

There is a product called new remove graffitti remover which I used to remove marker pen from a site board once. Its water based, so ideal for your purpose

[ilovesettsonmondays]

Thanks very much will Google it

[Tony McC]

There's a Stain Devil product for shifting even permanent ink. However, it has limited impact on highly absorbent/porous stone, such as Mint, Rainbow, Teak and all the other usual suspects.