Hi guys,
I recently removed a lot of ivy from an external wall made of sandstone blocks. There is now a large shadow shaped dark stain on the wall, which is engrained in the sandstone and it ruins the appearance of the house.
Any ideas on how I can get rid of this stain?
I recently removed a lot of ivy from an external wall made of sandstone blocks. There is now a large shadow shaped dark stain on the wall, which is engrained in the sandstone and it ruins the appearance of the house.
Any ideas on how I can get rid of this stain?