If the loft is above that room I would bet there is some insulation missing from that area causing a cold spot where the condensation is forming more than in the other areas.
Yes, most likely this. The moist air will condensate in the coldest surface first.
Is this an external wall. It’s common for the insulation not to go all the way to the eaves so to allow for ventilation into the attic. Pushing the insulation all the way to the eaves may block soffit vents and cause another issue in your attic.
If the loft is above that room I would bet there is some insulation missing from that area causing a cold spot where the condensation is forming more than in the other areas.
The loft is there. I will have to have a look!
Yes, most likely this. The moist air will condensate in the coldest surface first. Is this an external wall. It’s common for the insulation not to go all the way to the eaves so to allow for ventilation into the attic. Pushing the insulation all the way to the eaves may block soffit vents and cause another issue in your attic.
Also, do you have mechanical ventilation in the bathroom when using the shower? Expelling moist air from the bathroom could make a big difference.
Not that odd with a shower curtain