I have condensation in my garage I have an insulated garage door, but the windows on the door always have condenstation, espically when we bring the cars in wet. Our garage is not heated. It is a new home 3 years old had this problem from day one. the builder and I have been trying to figure out how this can be happening. Can you suggest some things we should be looking at or for to cause this problem. Please help builder is ready to say there is nothing they can do.

Margie, March 2013

I would say lack of ventilation, needs air flow.

Len, April 2013

spot on pecavvi,as usual :-)

mm, March 2013

There's not much the builder can do but there are things you can do...

Condensation happens when warm wet air meets a cold surface - the air cools and is unable to hold as much water as it could when warm.

And you say "especially when we bring the cars in wet."

The moisture on the car evaporates in the heat being given off from the engine and exhaust and the resulting wet air meets the cold windows and you get condensation - a perfectly natural physical reaction and to be expected in the winter months given the circumstances.

How do you stop it?

Let the car cool down before putting it away. Don't put the car away wet. Leave the garage door open for a while to let any warm air out. Provide some ventilation if you can - do the windows open? Buy, borrow or rent a dehumidifier and get rid of any lingering moisture in the garage.

This is not a matter for the builder - just the modification of your current routine. It will not be much of an issue in the warmer months.

Good luck...

Peccavi, March 2013