Only goes so far. The interface between the garage door and the frame of the house is difficult to seal perfectly. Always going to be drafty. Also, you can’t put particularly thick insulation on the garage door.
I live in a cold climate. I have a 2 stall garage and the north facing insulated doors seal very well to hold in the heat. In fact the whole garage is insulated and I even heat it. Holding the building a 45F it takes 2 years between refills with a 200 gallon LP tank. And this is with temperatures than hit -40F over night with highs still well below 0F for several days or weeks at a time. And even unheated, that garage will never drop below freezing over an entire winter.
If you a drafty doors, you are doing something wrong. Fix them.
And if you spend a couple hundred bucks on insulation, you don’t need to preheat anything in your garage either.
Only goes so far. The interface between the garage door and the frame of the house is difficult to seal perfectly. Always going to be drafty. Also, you can’t put particularly thick insulation on the garage door.
I live in a cold climate. I have a 2 stall garage and the north facing insulated doors seal very well to hold in the heat. In fact the whole garage is insulated and I even heat it. Holding the building a 45F it takes 2 years between refills with a 200 gallon LP tank. And this is with temperatures than hit -40F over night with highs still well below 0F for several days or weeks at a time. And even unheated, that garage will never drop below freezing over an entire winter.
If you a drafty doors, you are doing something wrong. Fix them.