How to Trim the Windows on Board & Batten Siding on a House
The trim around the exterior of a window covers the spaces between the casing and the surrounding frame, tying the window into the rest of the trim of the house. Board-and-batten houses have vertical square-cut trim, generally 1-by-2 or 1-by-3 boards. By using the same type of board around the window, the opening will look natural within the rest of the wall. Properly trimmed board and batten siding will stop around the window casing with enough space left for the trim.
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Things You'll Need
- Hammer
- Pry-bar
- Tape measure
- Pencil
- Wood trim to match the battens (in finish and thickness)
- Miter saw
- Trim nails
- Caulk
Instructions
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1
Measure the width of the window opening at the top, from corner to corner, along the edge of the window casing.
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2
Transfer that measurement to a piece of trim with two marks, so the measured span is between them. Put the marks on the bottom edge of the trim.
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3
Set the trim on your miter saw so it's facing up at you and the marked (bottom) edge is against the back "fence" of the saw. Set the trim so one of the marks is front of the blade.
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4
Swivel the blade to 45 degrees outward, so it points toward the closest end of the trim. Cut it.
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5
Move the trim so the second mark is in front of the blade. Turn the blade to 45 degrees in the opposite direction. This will be in the opposite direction as it was before. Cut it.
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6
Hold the trim to the upper span of the top window opening, so the bottom edge is lined up along the window casing. The mitered ends should angle out from the two top corners. Nail it in place with trim nails and your hammer, putting a nailed every foot or so along the top and bottom of the length.
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7
Repeat the process for each side of the window. The mitered cuts on the ends of the trim should be pressed together to form the corners.
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8
Run beads of caulk the along the trim where it meets the wall and the window.
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