Installation Guide

16 | Diamond Kote Building Products Application Guide 6.18
RIGIDSTACK™ INSTALLATION
• Now install the rst course of siding so
that the plastic spline fastened into the
back of the siding ts over the beveled
edge of the starter board
(Figure 2b) or
into the Metal Starter Strip, as shown in.
(Figure 2c; both on pg 12)
Note: Leave a 3/16" gap where siding
butts against trim to allow for expansion.
• When attaching siding, avoid nailing
closer than 1-1/2" from the end of the
board to avoid penetration of the power
nails into the nail n.
• Fasten the siding by nailing through the
nail line
(about 3/4"
from top edge of siding)
at each stud, leaving
no more than 16"
between nails.
• Begin nailing at one
end of the siding and
work toward the other end to prevent
rippling of the siding. Do not countersink
nail heads.
• Then, install subsequent courses of
siding so that the plastic spline ts over
the top edge of the previously installed
piece of siding.
• Make sure that the spline is rmly seated
to the top of the previous course by
pushing in and slightly down on the face,
BEFORE and DURING nailing, to ensure
the material lines up at the butt joints
and at course lines at the corners.
• At some point during the installation it
may be necessary to remove the spline
from the back of RigidStack™ in order to
make the courses line up at corners or to
adjust for an out of level wall. Removal
of the spline is not uncommon and
does not void the substrate or nish
warranty. To remove the spline grasp
it using a pliers at rst, then with your
hand. Wiggle it back and forth while
pulling upwards, continue until the entire
spline is removed.
RIGIDSTACK JOINT PREPARATIONS
USING H-MOLDINGS
• When using RigidStack™ siding the butt
joints are REQUIRED to be covered with
an H-Molding.
(Figure 2f)
H-Moldings DO NOT automatically space
the board for expansion. They're designed
to cover the expansion gap.
• Leave a 1/4" gap between siding pieces.
3/16" gap plus thickness of H-Molding
web equals 1/4".
• The butt joints between adjacent siding
pieces must be located over the middle
of a stud.
• Best method is to apply both adjoining
pieces of RigidStack™ fastening along
the entire length except for the butt joint
ends.
• Slide the H-Molding in place from
the bottom of the siding, with the
notched end of the molding down.
Bending slightly outward on the anges
rst will help the H-Molding slide into
place more easily.
(Figure 2f)
• Finish fastening by nailing, both pieces
of siding at the end of the siding and
angle the nails slightly to hit the stud.
• At butt joints, fasteners should be driven
3/4" down from the top and 3/8" in from
the ends.
• Fasteners below window sill need to be
spaced a maximum of 8" o.c. Fasteners
will be exposed on the siding located
immediately below window sills, fascia
boards, and horizontal trim.
Watch the RigidStack Installation Video.
GAP 3/16"
AND SEAL
Figure 2e
Bend slightly outward
on the anges
Install with this
end down
Figure 2f
8" on center