Newbie saying hello & have a question about condensation/ventilation

[7and911]

Hello everyone..

Building a new garage and paranoid about condensation. My garage has slightly odd dimensions, 13X3.5m (about 120 cubic meters). Metal insulated roof and good insulated door, but the walls are prefabricated concrete walls. May install some wall insulation later.

I live in Glasgow, UK. condensation is bad in winter. I used dehumidefier in my old garage but was not very effective at low temp.

I have to admit the car(s) will be parked in the garage wet! I understand heating and dehumidefication are the best solution but due to the size of the garage I doubt if a reasonable price dehumidifier would be effective and it will be too expensive also to heat the garage.

My question is about ideas to stop condensation. I looked at the archive and thinking about extraction fan and may be also ceiling fan.

Thank you

 

[Hornman]

Welcome aboard, glad to have you. Glasgow, huh? Tough climate. Since you think dehumidification and/or heating your garage will be too expensive, that pretty much leaves ventilation. Air circulation inside and a good exhaust fan will do as much as can be done under the circumstances. If you want to get fancy, you could install a humidistat in the garage and run the exhaust fan off that. Don't forget to make provisions for the makeup air to the garage, that way the airflow will be the way you want it, not by path-of-least-resistance.

 

[7and911]

Thank you Homman...

The problem with exhaust fan is the makeup air will be very humid in the winter...

 

[kbs2244]

You definitely need air circulation.
Buy, or homebrew, a comparing humidistat.
As long as the out side air is drier than the inside, run the fan.