Where do you nail a door trim?
Nail the head moulding piece to the door jamb with trim nails. Use 3d or 4d nails every 12 inches along the bottom, and 6d or 8d nails along the top of the moulding piece. Tip: To prevent splitting during this step, avoid nailing 1/4 inch from the side edges and an inch from the edge of the moulding.
Can you install door trim without nail gun?
But if you don’t have one, using a nail hammer is a great alternative on how to install door trim without nail gun, since the clamp keeps everything in place. Then, drive the nail head into the trim by using a nail set.