Condensation always forms on a cold surface, usually the window is the coldest part of a room, in your case it seems to be the wall.
Once you have insulated the wall, the condensation will move to the next coldest part of your flat.
Running a dehumidifier provides a cold spot for water vapour to head for, but it costs a lot to run.
Water vapour always moves to cold or an area of low pressure.
Unfortunately we put water vapour into a room by cooking, washing, drying clothes, breathing, sweating. Small children and animals add more because they tend to be active, old people less.
If you add ventilation, then your water vapour will disappear into the air outside, along with any heat that you have, pushing your heating bill sky high.
The dehumidifier and a small amount of fresh cold air from outside, sufficient to keep the heating affordable and the air free of carbon dioxide is probably the best and cheapest way to go.
Warm air holds more water vapour than cold air.
Turning the heating off or down, lowers the air temperature and causes condensation as air at a given temperature can only hold a certain amount of water. Keeping the room temperature steady 24/7 will reduce the amount of condensation you have to deal with.
Once you have insulated the wall, the condensation will move to the next coldest part of your flat.
Running a dehumidifier provides a cold spot for water vapour to head for, but it costs a lot to run.
Water vapour always moves to cold or an area of low pressure.
Unfortunately we put water vapour into a room by cooking, washing, drying clothes, breathing, sweating. Small children and animals add more because they tend to be active, old people less.
If you add ventilation, then your water vapour will disappear into the air outside, along with any heat that you have, pushing your heating bill sky high.
The dehumidifier and a small amount of fresh cold air from outside, sufficient to keep the heating affordable and the air free of carbon dioxide is probably the best and cheapest way to go.
Warm air holds more water vapour than cold air.
Turning the heating off or down, lowers the air temperature and causes condensation as air at a given temperature can only hold a certain amount of water. Keeping the room temperature steady 24/7 will reduce the amount of condensation you have to deal with.
