Installation Instructions

installing vertical siding

1. Using a level and chalk line, pull a line around the bottom of the wall where you want the siding to start, allowing

for type of starting channel being used (either vertical base flashing or J-channel).

2. If using a 10" panel (i.e. Double 5), measure width of the wall and divide by 10". Calculate the width of the

starting and finishing panels, which should be the same size. This will provide a centered appearance.

3. Install starting channel with the bottom of the channel flush with the chalk line, inserted into the receiving pockets

of the posts.

4. At top of wall, install a J-channel, inverted, to act as a cap over the panel.

5. If first panel is cut on flat portion, fill post cavity to full height with a furring strip 3/8" x 2" wide. Install an undersill

trim vertically over the furring strip, within the cavity of the post. Nailing undersill trim holds the board in place.

6. Cut panels to length, allowing for expansion at top and bottom. Perforate cut edge

of the panel every 12" using a snap-lock punch, ensuring the “tabs” face outward.

7. Insert the panel into the upper J-channel and lower vertical base flashing,

then snap “tabs” into undersill trim.

8. Raise panel to 1/4" from the top of the upper J-channel, and secure by first

placing a fastener at the top of the topmost full nail slot. Continue by centering

the remaining fasteners in the nail slots, a maximum of 16" on center.

Secure subsequent panels similarly, by first hanging the panel, then securing

by centering the fasteners.

9. Fit the last panel into the corner post on the opposite side of the wall,

in the same fashion as the first panel was installed.

Horizontal Joints

For horizontal joints, combine J-channels back-to-back with Z-flashing to direct water over

the lower wall (shown at right). Use a single J-channel with a minimum 3/4" face Z-flashing,

or a vertical base flashing trim piece.

Windows, Doors and Openings for Vertical Siding

1. Install a window/door cap over the window or door (shown at right).

2. Install J-channel on the sides of windows and doors and under the sill, flush with the frame. Remove a tab from

the top of each side J-channel for inserting siding panels. Cut rain tabs at the bottom of both side J-channels, and

fold them into the J-channel under the windowsill.This allows for water drainage.

3. Install an inverted J-channel over the window/door cap, cutting rain tabs at both ends and inserting them into the

side J-channels (illustrated on previous page).

4. When installing siding, if the panel is cut along the flat section, place a piece of furring strip inside the J-channel

pocket, along with an equal length section of undersill trim. Securing the undersill trim

will secure the furring strip (illustrated in step 5 of INSTALLING VERTICAL SIDING).