Installation Instructions

© CertainTeed Corporation 6/06
558.pdf
4. Measure the side J-channels. Add the width of
both the top and bottom J-channels.
5. Miter cut (45°) the lower ends of both side
J-channels.
6. Notch the channels, position them, and fasten
the side J-channels.
7. Mark the top J-channel so its ends extend
beyond the casing to the width of the side
J-channels.
8. Miter cut the channel ends.
9. Cut and bend water tabs on the top J-channel.
10. Position and fasten the top J-channel.
Installing Wall Panels
Correctly installed vertical siding should have a balanced
appearance. This means that if you were to draw a
vertical line down the center point of a wall, you’d have
an equal number of panels to the right and left. If you
had to trim panels to fit, the end-most panels would be
of identical width.
To create this pleasing appearance, divide the space to
be covered by a partial panel over both ends of a wall.
For example, if a wall required 25 full panels plus 10",
you would rip cut two 5" lengths of panel to create the
end pieces.
Expansion and Contraction
In a vertical siding installation, most of the expansion is
downward. So instead of allowing equal space for
expansion at both ends of a vertical panel, leave more
space at the lower end: allow for 1/3 of the total
expansion at the top of a panel and 2/3 of the total
expansion at the bottom.
For example, if the total
expansion equals 3/4" (3/8"
+ 3/8"), allow 1/4" at the
top and 1/2" at the bottom.
Always position the top
most nail at the top of the
top most full nail slot (2a).
Center the remaining nails
in the slots (2b).
Cut the first of the partial
panels (if partial panels are
necessary). Mark the cut
line by measuring from the
nail hem edge. Rip cut the
panel. Do not cut off the
nail hem. Use a snap lock
punch to create locking
tabs along the cut edge.
Space the tabs 6" apart.
Before installing this partial panel into the outside
cornerpost, provide additional support at the cut edge
(to compensate for the locking channel that was
trimmed off).
To do this, insert furring into the channel of the outside
cornerpost and nail it to the substrate. After furring,
insert a length of undersill trim into the cornerpost and
nail it to the furring. Finally, slide the cut edge of the
panel into the undersill trim, making sure to engage the
snap locks.
Using a level, make certain this panel is plumb. Nail
every 12".
Install the next panel. Lock the panel into the preceding
panel, then nail every 12". Continue with succeeding
panels.
When necessary, cut panels to fit around doors and
windows. When marking the cut, remember to allow for
expansion.
The method used to install panels around doors and
windows is determined by the need to cut a panel and
the position of that cut.
If a cut was made next to a remaining V-groove, insert
the panel into the J-channel.
If a cut removes the support provided by a V-groove,
use the procedure described above to provide support
for the trimmed edge.
To finish the first course of a wall, cut the final panel to
size and install it an in outside cornerpost, using the
method described above.
NOTE: The cutting and supporting
procedure described above is also used
when fitting panels into inside
cornerposts.
If you have any questions about installing
this product, please call us at 800-233-8990.
Board & Batten Installation Instructions | 3 of 3
1/3
2/3
2a
2b
cornerpost
undersill
trim
snap
locks
panel