Half-Rounds in Gable Ends
NOTE: The following instructions focus on a gable
installation. They also are geared towards an enclosed
gable, started with a J-channel. Half-Rounds can also be
started with starter strip. This is an example only!

Installing receiving channels

Frame the border area with 3/4" J-channel. Nail in place
loosely. Miter joints accordingly.
NOTE: You also can use 3-1/2" or 5" lineals to frame gable
ends and gable base. For instructions on cutting lineals
for peaks, see “Gable Trim” on page 55.
Cut enough J-channel to span the base of the gable, then
secure it in place.
NOTE: The instructions below show how to create a gable
installation with a complete, centered Half-Round at the
peak.

Making the starter course

Gable installations properly terminate with a single round at
the peak. To create this effect, you usually have to adjust the
height of the starter course.
To determine the height of the starter course, calculate the
number of rows required to complete the gable.
Use the following formula:
Gable height (inches)÷ 12.5 (face exposure) = courses required
NOTE: Gable height is measured from inside the
horizontal receiving channel to the peak (allowing
1/4" at top and bottom for expansion).
For example, with a 68" gable height, the calculations would
be 68 ÷ 12.5" = 5 with a remainder of 0.44. This means you
would need 5 full courses plus 0.44 x 12.5" (face exposure of
panel) = 5.5" measured from the top edge of the gap on the
upper course (illustrated). This is the visible height for your
starter course. The visible height is the vertical dimension of
the panel you’ll see below the first full row of rounds.
Once you’ve determined the visible height of the starter
course, mark this dimension on a Half-Rounds panel. Measure
from the top of the gap on the upper course (illustrated). Draw
a cutting line the entire length of panel.
Cut and use the top section, which contains the locks, as your
starter course. Cut enough panels to span base of the gable.
88
Wolverine Fit and Finish Installation Guide
gable
height
5-1/2"
top of gap
5-1/2"
cut
remove