Wolverine Soffit and Decorative Trim Benutzerhandbuch

There are several ways to trim the odd angles of bay windows.
Here are two of them:

1. Install bay window cornerpost.

2. Install J-channel with a quarter-round insert.

Before you begin, make sure the corner is properly flashed.

• Cut bay window cornerpost to the proper length.

• For angles less than 45°, push down on the face of the

corner until the nail flanges seat flat against the wall
surfaces.

• Hang the cornerpost by nailing loosely into the topmost

nail slot.

• Make sure the cornerpost is straight and true. 

• Position all remaining nails in the center of nail slots a

maximum of every 8" to 10". Leave 1/8" to 1/16"
between the nail head and the cornerpost to allow the
cornerpost to move during normal expansion and
contraction.

• Fit the siding into the cornerpost. Leave 1/4" for

expansion.

• Cut two pieces of J-channel and one piece of 

quarter-round insert to length. 

• Pop rivet the J-channels to each side of the 

quarter-round insert in at least three places. 

• Nail the assembly to the corner, remembering to 

hang the assembly from the topmost full nail slot. 

• Position all remaining nails in the center of nail slots a

maximum of every 8" to 10". Leave 1/8" to 1/16"
between the nail head and the J-channel for normal
expansion and contraction.

• Fit the siding into the J-channels. Leave 1/4" for

expansion.

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