HHilfeHilfe 2020-05-01 14:16:05#1Hello, I was just jogging, here we have numerous anthracite-colored walls. It rained and every wall has stains.
Hello, I was just jogging, here we have numerous anthracite-colored walls. It rained and every wall has stains.
SSchnubbi 2020-05-01 20:41:30#2With water and brushing for 10 minutes, unfortunately no change... I'll try again tomorrow
Ttomtom79 2020-05-01 21:17:54#3Try [Zementschleier Entferner], but you will probably not have any success, just like with us.