A garage asked if I could help and clean up a large oil spill on a customers drive apx 5lts it been on a week now. The drive had been sealed last year. I have tried oil remover and cold pressure wash off on one stone, dried it off and rubbed it with a white paper towel no oil on towel but the stone dried dark any ideas !!!
The stone is Indian black sandstone
What do you think to charge and will it get back to original state to satisfy customer or walk away
Go strip a metre...make sure you can get it off and it drys out ok . You will then have a good idea of materials used ,time taken and how much mess... X this by the total area . You will then have an idea of the cost to you .