I agree with the gentle ventilation idea.
I've heard of people using the type of extractor/vent used on e.g. pet ambulances or on top of chimneys, the ones which are turned by the wind - no power required.
I've tried a de-humidifier, as Peter Pick-Up has said, might not work in cold conditions. Afaik there's a couple of different operating types - mine uses 'The Peltier Effect'?, stops working below about 6 degrees C. and uses quite a lot of electricity if run 24/7. Could always run it from a timer, I suppose to reduce costs.You'll need to run a drain tube out through the wall or door, as the water tank can fill up surprisingly quickly under some conditions, and if full, will switch off the dehumidifier. Any air leaks into the garage will reduce it's effectiveness and opening a door, even briefly, will undo it's good work.
For the interior of the car, it's vital to prevent dampness from causing mould growth. I'd suggest some of those trays containing calcium carbonate?? that absorb moisture and can be dried out in an oven or microwave?. I've successfully used a few sheets of newspaper covering the seats and carpets to absorb moisture, but you'd need to check them often in case they're becoming damp and need changing.
My garage has insulated walls and roof
- the condensation occurs on the un-insulated concrete floor!!
(Builder told me I didn't need underfloor insulation, just a damp proof membrane :bang: ).
My house needs a new central heating oil burner, was thinking of getting one of the newer condenser boilers for efficiency and re-locating it to the garage, thinking I'd be then heating the garage for free
. Heating Engineer said the new condenser boilers come in their own insulated metal housing and would provide little to no heat for the garage as they give off very little heat.
Might have to install a couple of radiators in the garage....
AL.
