Fantastic Insulation: Search for a door with an R-value of at the very least 3 in average to temperate climates. In harsher climates, go around an R-worth of ten. Tilt-up: Tilt-up doors have a single good panel that lifts off the ground and slides into a section on top http://sonicsquirrel.net/detail/playlist/Ovikanava/3394/