Craftsman CTS205 Installing Window and Door Trim, To square cut corners, To miter cut corners

CertainTeed Vinyl Siding Installation Guide

rain tab	Installing Window and Door Trim
	Install J-channel along the top and sides of door casings and
	around windows.
	NOTE: When installing J-channel around replacement
1"	windows that do not have nail flanges, add flashing for
	greater protection against water infiltration. For an example
	of completed flashing, see the previous page.
	There are two methods of joining J-channels at corners. The
	easiest method is to square cut the corners. For a more finished
	appearance, you can miter the corners. To prevent gaps, do not
	butt ends. Instead, lap them as shown.

1"

rain tab

	To square cut corners
	Install J-channels at the sides of the windows. Notch them
	as shown.
	NOTE: For best results, use aviation snips when cutting
	J-channel.
	Cut the top and bottom J-channels so the ends extend beyond
	the casing to the width of side J-channels.
1"	Place the top J-channel along the casing shoulder and nail it to
	the wall.

rain		Make two cuts in the bottom of the upper channel and bend it
tab		down to overlap the side J-channel. Repeat for the other side.
		This forms a water drain and allows the J-channel to receive
		siding panel.
1"		Nail the bottom J-channel in place. Cut the channel as previously
		described. Fold the rain tabs into the receiving pockets for a
1" or		tighter miter joint.
dimension
of J-channel		To miter cut corners
face)
		For best results, make sure you cut all J-channels to the proper
		length, leaving the proper allowance for the width of the face of
		the J-channel.
		Square cut the bottom J-channel so that its ends extend beyond
		the window casing to the width of the face of the side J-channels.
		Notch the ends for clearance. Position and nail the J-channel.
1"		Measure the side J-channels, adding the width of both the top
		and bottom J-channels. Miter cut (45° angle) the lower ends
		of both side J-channels. Notch the channel to form a rain tab,
		position it and nail.
rain	1"	Mark the top J-channel so its ends extend beyond the casing to
tab		the width of the side J-channels. Miter cut (45° angle) the ends.

Cut and bend rain tabs. Position and nail.

NOTE: You can create blind miters on a J-channel using a

J-channel cutter.

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