Damp garage problems

[Ray Singh]

Following the recent cold weather, the temperature has risen and now i am finding that my garage is very damp. I painted the floors and walls last year and am noticing that everything is damp. My boxster has condensation all over it and the floor is saturated.

How can i resolve this without spending a fortune?

[rfsteel]

Sound like you need to ventilate it.

By painting all of the surfaces in the garage, you have now blocked the air flow through the garage or breathability, so now the air is condensing in the garage when the air temp changes.

https://www.youtube.com/watch?v=bfUtBz8Pwyo

[Slagathore]

Dehumidifier connected to a drain so it runs constantly.