WelshGas
Retired after 42 yrs and enjoying Life.
Super Poster
Lifetime VIP Member
Basic science dictates that if you have condensation then you have inadequate ventilation. Insulating any area reduces heat loss but does nothing regarding condensation, just where it appears.not sure the external cover would send any condensation to remote cold spots that will happen which ever cover is used, Also if any condensation does appear it will be on the single glazed sliding windows which you can easy wipe dry. If we use the vw front screen blinds the glass is soaked nearly every time during cold damp conditions the key is to have the roof up also.
Out of sight out of mind , but it's still there.