Drafts around the exterior door.
Garage door frame rotted.
The main cause of rotted garage doors is water damage.
Then coat the rotted door frame area with wood hardener as shown.
Insert the tip of a flat crowbar under the trim.
Tap on the back of it with a hammer to drive the tip in as far as you can.
Some garage doors are.
But there are several less obvious symptoms you should be on the lookout for such as.
In case you have had a plumbing accident water in your garage will move to your garage door.
These dark spots are caused by the growth of fungi as they feed on moist wood.
Mix polyester wood filler or bondo wood filler and press it into the recess with a putty knife.
Pry on the crowbar to lift the trim and loosen it.
To repair rotted door frame first remove rotted wood with a 5 in 1 or other sharp tool.
Wood garage doors tend to absorb all the water and start expanding.