First the source of that water must be found and repaired, as well as any other damage it’s caused. Then to u’re going to need to open up that wall, so it can dry out before mold sets it. That means removing the plaster from one entire side of the wall. If you open it and find mold use a mixture of 1/4 bleach to 3/4 water to spray on the mold and kill it. Wear proper ppe to prevent inhaling any spores. While removing the plaster, open that window in the hall pic and open another on the first floor, putting a fan in the window downstairs to blow air in the house. Don’t use a downstairs window on this side of the house. When the leak and any other damage is mitigated, you can use drywall on this side to replace the plaster.
There is a one way valve between the compressor and tank. If you have air leaking back through the compressor, this valve is stuck open. Repair or replace.
HomeAutomationCowboy t1_jaeayis wrote
Reply to Fixing wall water ingress / what is that white stuff falling from the wall? by enava
First the source of that water must be found and repaired, as well as any other damage it’s caused. Then to u’re going to need to open up that wall, so it can dry out before mold sets it. That means removing the plaster from one entire side of the wall. If you open it and find mold use a mixture of 1/4 bleach to 3/4 water to spray on the mold and kill it. Wear proper ppe to prevent inhaling any spores. While removing the plaster, open that window in the hall pic and open another on the first floor, putting a fan in the window downstairs to blow air in the house. Don’t use a downstairs window on this side of the house. When the leak and any other damage is mitigated, you can use drywall on this side to replace the plaster.