My neighbors are constructing their house from ground up. We have concrete structures for almost all buildings here. When the walls are ready they need to water it so the concrete settles and get strengthened. This process absorbs a lot of water and thats where Osmosis kicks in with the neighbor's walls (also made of concrete) at the receiving end. So to cut it short all the walls in my house that run parallel to the neighboring newly constructed walls are sucking in water with salt deposits that have ruined the paint as well as making algae thrive over the walls' surface in moist weather.
Now there are cabinets built on these walls which contain everything that needs to be stored, and due to the hassle described above, algae climbs onto everything in its reach (clothes, food, utensils etc.).
Is there any way out of this? I have tried keeping fresh air passage open, but that only slows down the green goo. How to get rid of it and keep it from coming back?