Nail each piece every 12 inches but be very careful at the mitered.
How to install a nail on garage door trim.
Use 3d or 4d nails every 12 inches along the bottom and 6d or 8d nails along the top of the moulding piece.
Use 6d casing nails for the stop molding nailing it at the premarked points on the trim.
Precut the miters on the top piece of brick mold trim and nail it to the framing every 12 in.
Put the trim down and place the weather stripping in the same way you did before.
Remove the old jamb and trim then nail the vinyl jamb to the frame beginning with the top piece.
Install baseboard step 1.
Cut and install the trim on the second side of the door.
Step 4 placing the trim to the sides of the garage.
Hammer the trim with the finishing nails and to get the best results ensure that the nails are approximately a foot away and the rubber edge is slightly attached to the garage door.
Install the vertical pieces of brick molding using 3 inch air nails at the exact location where you measured its dimensions.
Nail the head moulding piece to the door jamb with trim nails.
Fasten every 12 to 16 in.
Do one side at a time and have someone hold the trim while you work to keep it straight and sturdy.
Trim any exposed shims by scoring them with a knife and then breaking along the line.
In the same way you placed the trim on above the garage make sure you place any weather stripping you desire first and then lay down the trim hammering in nails every foot to hold it into place.
Drive 6 finishing nails through the trim and into the studs behind the wall spacing the nails about 16 inches apart.
To prevent splitting during this step avoid nailing 1 4 inch from the side edges and an inch from the edge of the moulding.
Install the stool first then one side the top and the other side.
Nail up the large base.
Nail the trim to the jamb and studs.