If the trim is only.
Rotting garage door frame.
The rot is often found when homeowners decide to install a.
Like windows cracks and gaps between a door and the siding or threshold permit water to enter making them prime spots for wood rot.
In case you have had a plumbing accident water in your garage will move to your garage door.
With time the wood frames and bottom starts rotting and breaking down.
The main cause of rotted garage doors is water damage.
Most rot comes from water being wicked up the edge or through paint cracks caused when shoes wheels etc hit the jamb molding.
Before installing jambs brick moldings be sure to paint all sides and edges with paint or water proof material.
Measure the damaged area make sure to remove any weatherstripping before cutting into the frame remove the rotted areas with a chisel saw knife or preferred tool confirm the measurements of the damaged area restore the missing areas of the door jamb by cutting your own replacement.
Use a polyester filler to rebuild rotted or damaged wood.
Use a claw hammer and diagonal pliers to remove all nails remaining in the garage stud frame.
You can mold and shape it to match the original wood profile.
The caulk everything well.
Wood garage doors tend to absorb all the water and start expanding.