Today we will be showing you how to cut and install J Channel to trim out around a window in order to install vinyl siding. Starting with the bottom, cut a piece of J channel about 2 inches longer on each side of the window.

Tool used:

 Install J Channel Around Windows And Doors For Vinyl Siding Install J Channel Around Windows And Doors For Vinyl Siding

Malco MV12 USA Made Multiple Purpose Snip Vinyl Siding, Aluminum Trim Coil, Vinyl Flooring, Carpeting, Leather and Landscaping Edging

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Mark the corners of the window.

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Cut the J channel as shown, leaving the face on both sides:

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After cutting a piece for the sides 4 inches longer in height than the side of the window, mark the window as shown:

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Trim both sides using the marks.

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Slide the sides of the J channel into the bottom. Nail the sides of the J channel to the high sides of the material on the wall.

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Finish the corner by trimming the point on the corner.

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The same procedure is used on the top of the window or a door. Mark the corners.

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Trim the J channel leaving the face.

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Mark the top piece on the sides.

Left:

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Right:

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Trim the J channel using the marks.

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Slide the top J channel into the sides.

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The window is ready for siding now.

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Caulk the J channel to the window to finish the job.

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Here is the J channel at the bottom of a door.

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Tool used:

 Install J Channel Around Windows And Doors For Vinyl Siding Install J Channel Around Windows And Doors For Vinyl Siding

Malco MV12 USA Made Multiple Purpose Snip Vinyl Siding, Aluminum Trim Coil, Vinyl Flooring, Carpeting, Leather and Landscaping Edging