Assembly Instructions

Wall
Sheathing
1905 W. Haskel Street, Appleton, WI 54914
www.appletonsupply.com• 800-558-3414
Fiber Cement/Smart Side Best Practices
3/16 INCH GAP ON
BUTT JOINTS
3⁄16
The “No Caulk” Solution
Appleton Back Flash is
designed for use behind siding
butt joints. Back Flash directs
water away from the structure
protecting against moisture
intrusion.
Back Flash is made from
aluminum, so it will not rust.
Seam Backer Plates are
considered best practice by
all major fiber cement siding
manufacturers.
ALUMINUM SEAM
BACKER PLATE
Stud
1" from top
3/8" from
edge
House
wrap
MINIMUM 2" CLEARANCE
Aluminum Angle Flashing
protects siding against
2nd story wall to 1 story
roof and chimney to roof
connections. Allows
siding to be installed the
recommended 2" above
the roofing, deck, paved
driveway or sidewalk.
House
wrap
House
wrap
2" Min.
Exterior Slab/Roof Deck
Wall
Sheathing
4" HIGH KICKOUT
FLASHING
Appleton Kickout Flashing is a
pre-formed flashing used to divert
water away from a wall and into a
gutter. Usually installed on the
bottom of a roof edge that
intersects a wall surface.
When properly installed, it will
provide added protection against
the penetration of water into the
building envelope.
4" Min.
1/4" Gap
DO NOT CAULK
Stud
Sheathing
Fiber Cement siding manufac-
turers are now recommending
that butt joints not be filled with
caulk. Aluminum seam covers
are the most attractive alterna-
tive. H-Moulding joint covers
protect butt joints and elegantly
provide an expansion joint to
help prevent buckling or
distortion.
Z-FLASHING
Aluminum Z-Flashing
protects top edge of panel
siding from water infiltra-
tion. Protects top edge of
lap siding below band
board or when transitioning
to another style siding on a
gable end.
1/4"
3/8"
1 1/8"
DRIP CAP
Directs water away from
the structure above doors
and windows.
Installs at the top of trim
boards to protect against
moisture intrusion.
1/4" Gap
DO NOT CAULK
Insufficient Clearance: Fiber Cement siding requires 6" of clearance from
the siding to the finished grade, and 1" clearance to shingles.
Fiber Cement siding requires an uncaulked 3/8" gap above windows and
other similar penetrations, protected by Drip Cap flashing
Kickout flashing is a piece of metal at a roof end that prevents water from
leaking into the wall. The flashing must have a 4" upper leg.
Joint Treatments
To keep water out of the butt joints H-Mold joint covers should be installed,
backed by a 6" wide piece of Back Flash™. The butted ends of the siding
should be factory finished or sealed with paint.