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I have a 3/4" gap between my garage back door (see image. blueish color is outside evening light). Looking for a good way to cover this gap with two goals in mind:

  • Stop rodents from coming in
  • Help as much as possible to keep heat from escaping

The door is a simple wooden door. The floor is cement.
I know there are some thick rubber bands that can be used. Are there any better solutions?

enter image description here

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The simplest solution will be to install a larger door sweep on the inside. Sweeps come in a variety of sizes and styles. Check the out at any home improvement store. They easily attach to the door with a few screws and are adjustable so you can be sure they gently touch the floor and solve your gap problem

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