My patio window faces SW and has aluminium frame-- all other windows are UPVC; all are of course double-glazed. The aluminium window unlike all others
does suffer extreme condensation . Despite much experimentation with
temperature control I fail to cure the problem .
I am in the process of using a paint additive such as "Thermamix " on the aluminium frame -- which is meant to be used on walls prone to condensation . However, further treatment and time is needed to convince me of success or failure .
time is needed to convince me of success or failure .