Mix polyester wood filler or bondo wood filler and press it into the recess with a putty knife.
Repair rotted garage door bottom.
The bottom portion of your garage door is most susceptable to this kind of wear which can lead to water damage and wood rot.
Inspecting the garage door for rot signs is very important.
An old wooden garage door made of fiber board wood or other composite wood materials can become warp and receive water damage from years of rain and snow splashing and pelting its surface.
The door threshold the kick plate below the door and the door jambs wrapping an exterior door.
What makes the front door so vulnerable to wood rot.
You need to identify the specific parts of the door that are deteriorating.
Even without damage dampness is enough to cause wood rot.
The most susceptible areas to wood rot are the frames and bottom parts of the garage door.
Door rot or wood rot can occur at virtually any place on a wooden door but it most likely happens at the bottom where the wood is exposed to water and abuse.
To repair rotted door frame first remove rotted wood with a 5 in 1 or other sharp tool.
Then coat the rotted door frame area with wood hardener as shown.
Wooden door patch repair.
Wood rot occurs when there is a high level of water and a food source wood.