How to Insulate a Wooden Garage Door

While your garage’s ceilings and walls might be insulated, don’t forget about your garage door. Your wooden garage door will already insulate your garage better than a metal door, but with some simple foam board, you can increase your garage’s warmth during the winter. This is especially useful if you use your garage as a work area or simply if you prefer your car to be a little warmer on those cold winter mornings.

Measuring tape
Craft knife
Foam board or foam sheathing
Duct tape

Instructions

- 1
  Close your garage door.
- 2
  Measure the length and width of one of your garage door panels from the inside using a measuring tape. For the length, measure from the interior of one metal lip to the other; for the width, measure from top to bottom and subtract 1 inch.
- 3
  Cut foam board panels matching the measurements you found in step 1 using a craft knife. Cut as many panels as you have wood panels in your garage door. You can also use foam sheathing for this purpose.
- 4
  Bend one foam panel slightly so that it slides underneath one metal lip and then the other.
- 5
  Secure it along the top and bottom edges using duct tape.
- 6
  Repeat steps 4 and 5 until the entire rear side of your wooden garage door is covered.

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