Cemplank® Lap Siding
™
Manufactured
Housing (HUD Code only)
Tough Siding. Easy Choice.
INSTALLATION REQUIREMENTS FOR PRIMED AND FACTORY BUILT COLOR TREATED PRODUCTS – EFFECTIVE OCTOBER 2015
Cemboard® fiber-cement siding
IMPORTANT: FAILURE TO INSTALL AND FINISH THIS PRODUCT IN ACCORDANCE WITH APPLICABLE BUILDING CODES AND THE MANUFACTURER’S WRITTEN APPLICATION
INSTRUCTIONS MAY LEAD TO PERSONAL INJURY, AFFECT SYSTEM PERFORMANCE, VIOLATE LOCAL BUILDING CODES, AND VOID THE PRODUCT ONLY WARRANTY.
CUTTING INSTRUCTIONS
STORAGE & HANDLING:
Store flat and keep dry and
covered prior to installation.
Installing siding wet or saturated
may result in shrinkage at butt
joints. Carry planks on edge.
Protect edges and corners from
breakage. The manufacturer is not
responsible for
damage caused
by improper
storage and
handling of the product.
OUTDOORS
1. Position cutting station so that wind
will blow dust away from user and others in working area.
2. Use one of the following methods:
a. Best: i. Score and snap ii. Shears
(manual, electric or pneumatic)*
b. Better: Dust reducing circular saw
equipped with a HardieBlade® saw
blade and vacuum dust extraction
c. Good: Circular saw with a
HardieBlade saw blade (for low to
moderate cutting volume)
INDOORS
1. NEVER cut with power saws indoors
2. Cut only using score and snap, or shears (manual,
electric or pneumatic).
3. Position cutting station in well-ventilated area
* Shears and score/snap methods may not
be suitable for products thicker than 1/2 in.
– NEVER dry sweep – Use wet suppression or Vacuum
NIOSH-approved respirators can be used in conjunction with above cutting practices to further reduce dust exposures. Additional exposure information is available
at www.jameshardie.com to help you determine the most appropriate cutting method for your job requirements. If concern still exists about exposure levels or you
do not comply with the above practices, you should always consult a qualified industrial hygienist or contact the manufacturer for further information. SD083105
GENERAL REQUIREMENTS
• All Cemplank lap siding applications require the use of a water resistant barrier. Type of
barrier used is the choice and responsibility of the housing manufacturer.
• 9 ½” or narrower in width, Cemplank requires a minimum 1¼” minimum overlap. (fig 2)
• Cemplank lap siding greater in width than 9 ½” requires a 1 ½” minimum overlap.
• Overlapping greater than minimum requirements is acceptable.
• Do not install Cemplank such that it may remain in contact with standing water.
®
Double Wall
Construction
Figure 1
water-resistive
barrier
plywood or
OSB sheathing
Single Wall
Construction
24" o.c. max.
let-in bracing
Fastening Requirements
• Use 0.092 x 2” minimum corrosion resistant nails or 1 ½” 11 ga. (0.120” diameter)
corrosion resistant roofing nails.
• All Cemplank joints must meet over a stud except when using off-stud joint hardware. The length of each piece of Cemplank joined must be of sufficient length to allow for
nailing into at least two studs on either side of the off-stud joint location.
• Blind nail method: place the fastener 1” from the top edge of the plank.
• Face nail method (required when plank is greater than 9 1/2” in width for wind zone II
and III): place the fastener 5/8” from the bottom edge of the plank.
• Place 1 nail per stud.
fastener
Install a 1 1/4" starter strip to
ensure a consistent plank angle
leave appropriate gap between
planks and trim, then caulk***
16” Stud Spacing
WIND ZONE II
WIND ZONE I
No sheathing requirements
WIND ZONE III
Minimum 3/8” nail based OSB or plywood sheathing
0.113 thermal ply red sheathing*
1/4” fome-cor sheathing**
Studs must be doubled within the first three feet at
corners on side and end walls
stud
Minimum 3/8” nail based OSB or plywood sheathing
0.113 thermal ply red sheathing*
1/4” fome-cor sheathing**
24” Stud Spacing
Figure 3
stud
Stud
SHEATHING REQUIREMENTS
water-resistive
stud
WIND ZONE I, II, and III
Joint barrier
water-resistive
Flashing
Minimum 7/16” nailMinimum
based OSB
or plywood barrier
overlap
ax
water-resistive
barrier
24”
O.C. max
24"
Figure 4
24"
O.C. max.
O.C. max.
Minimum
overlap
1 1/4”
min.
for Overlap
Both Face
and Blind Nailing
for Both Face
Minimum overlap
for Both Face
and Blind Nailing
3/4"-1"
min. 1 1/4"
overlap
3/4”-1”
min. 1 1/4"
overlap
Nail
Face Nail
1 1/4" min.
overlap
1 1/4" min.
overlap
water-resistive
barrier
min. 1 1/4"
overlap
water-resistive
barrier
1 1/4" min.
overlap
3/4"-1"
face nail
face nail
water-resistive
barrier
Laminate sheet to be removed immediately after installation of each course for Factory Built Color products
Water
Resistive
* Minimum
5/16” gypsum must be used on the interior side of the wall for non-corner zones
Barrier
** Minimum 5/16” gypsum must be used on the interior side of the wall
Water Resistive
Barrier
DANGER: Do not breathe dust
24"
O.C. max.
stud
Figure 2 and Blind Nailing
l Line
24"
O.C. max.
Fiber cement is not a health hazard when handled or stored in its original, unaltered condition. The hazard associated with fiber cement arises from crystalline silica present in the dust generated by activities such as cutting, rebating, drilling,
routing, sawing, crushing, or otherwise abrading fiber cement, and when cleaning up, disposing of or moving the dust. When doing any of these activities in a manner that generates dust: (1) follow James Hardie instructions and best practices to
from thisafter
product.
Respirable
moved immediately
installation
of each course
fortheFactory
Built
Color
reduce or limit
release of dust;
(2) warn
othersproducts.
in the area to avoid the dust; (3) when using mechanical saw or high speed cutting tools, work outdoors and use dust collection equipment; and (4) if no other dust controls are available, wear a
Crystalline Silica Dust causes
damage to lungs and respiratory
system through prolonged
or repeated inhalation.
NIOSH-approved dust mask or respirator (e.g., the N 95 dust mask). Refer to the product Safety Data Sheet before use. Do not handle product until all safety precautions have been read and understood. Wash hands and face thoroughly after handling. If exposed to dust or concerned, get medical advice. If shortness
of breath or other health concerns develop after exposure to dust from the product, seek medical attention. Dispose of product in accordance with local, state and national regulations. If there are no applicable regulations, dispose of in a secure
landfill, or in a way that will not expose others to dust. WARNING: This product contains a chemical known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov/product.
For more information contact: James Hardie Building Products, Inc., 231 S. LaSalle St., Suite 2000, Chicago, IL 60604 USA 1-888 JHARDIE www.jameshardie.com www.jhsafesite.com
waterba
JOINT TREATMENT Double Wall
Single Wall
• Cemplank lap siding horizontal
joints are to be flashed
or designed in such
Construction
Construction
a way to prevent
waterbarrier
from entering the interior portionlet-in
of the
wall. The
bracing
water-resistive
24"
o.c.
max.
method used is the choice
and
responsibility
of
the
housing
manufacturer.
plywood or
OSB only): Use
sheathing acrylic or latex based caulk meeting
• Caulk (primed product
ASTM C-834 or C-920 standards. Caulk should indicate performance
that is permanently elastic or flexible. Follow caulk manufacturer’s
requirements for application/use. • Plastic/Metal joint connector: Spacing is determined by the design of
the hardware.
• Cemplank lap siding is allowed to touch at butt joints without the use
of joint sealants or hardware devices.
GENERAL FASTENING REQUIREMENTS
Fasteners must be corrosion resistant, galvanized, or stainless steel.
Electro-galvanized are acceptable but may exhibit premature corrosion.
The manufacturer recommends the use of quality, hot-dipped galvanized
nails. The manufacturer is not responsible for the corrosion resistance
of fasteners. Stainless steel fasteners are recommended when installing
Cemboard® products near the ocean, large bodies of water, or in very
humid climates.
water-resistive
barrier
PNEUMATIC FASTENING
Cemboard products can be hand nailed or fastenedfastener
with a pneumatic tool.
Pneumatic fastening is highly recommended. Set air pressure so that
Install a 1 1/4" starter strip to
the fastener is driven snug with the surfaceensure
of
theasiding.
A flush
mount
consistent
plank angle
attachment on the pneumatic tool is recommended. This will help control
the depth the nail is driven. If setting the nail depth proves difficult, choose
leavethe
appropriate
gap between
a setting that under drives
nail. (Drive
under driven nails snug with a
planks and trim, then caulk*
smooth faced hammer - Does not apply for installation to steel framing).
Figure 5
water-resistive
barrier
stud
1" from
plank top
joint flashing**
3/8" from
plank edge
install planks in
moderate contact
Joint Treatment
**(Required for
Factory Built Color
Finish, recommended
for primed products)
It is not recommended
to use caulk at field butt
joints.
Install factory finished
edges together at butt
joints
CAULKING
For best results use an Elastomeric Joint
Sealant complying with ASTM
stud
water-resistive
C920 Grade
NS,
Class
25
or
higher
or
a
Latex
Joint Sealant complying
barrier
with ASTM C834. Caulking/Sealant must be applied in accordance with
the caulking/sealant
manufacturer’s written instructions or ASTM C1193.
concrete
foundation
PAINTING
DO NOT use stain on Cemboard products. Cemboard products must be
painted within 180 days for primed product and 90 days for unprimed.
HardiePlank® Do not paint when wet. For
100% acrylic topcoats
6" min.are recommended.
lap siding
application rates refer to paint manufacturers specifications. Back-rolling
is recommended if the siding is sprayed.
FACTORY BUILT COLOR TECHNOLOGY CAULKING,
TOUCH-UP & LAMINATE
• Touch up nicks, scrapes and nail heads using the Factory Built Color
technology touch-up applicator. Touch-up paint should be used
• Consult applicable code compliance report for correct fasteners type
sparingly. If large areas require touch-up, replace the damaged area
® lap siding
Figure
A with Factory Built
and placement to achieve specified design wind loads.
with new CemplankFigure
Color B
technology.
• NOTE: Published wind loads may not be applicable to all areas
• Laminate sheet must be removed immediately after installation of
water each course.
where Local Building Codes have specific jurisdiction. siding
Consult the
resistive
manufacturer’s Technical Services if you are unsure of applicable
barrier
• Terminate non-factory cut edges into trim where possible, and caulk.
1" - 2"your Factory Built Color
compliance documentation.
Color matched caulks are available from
deck material
• Drive fasteners perpendicular to siding and framing.
product dealer.
1" - 2"
• Fastener
should fit snug against siding (no air space). (fig. A )
• Treat all other non-factory cut edges using the Factory Built Color
1" heads
- 2"
• Do not over-drive nail heads or drive nails at an angle.
technology edge coaters, available from your Factory Built Color
joist
flashing
• If nail is countersunk, caulk nail hole and add
a nail. (fig. B)
product dealer.
• For wood framing, under driven nails should be hit flush to the plank ledger
® SIDING AND TRIM PRODUCTS
with a hammer (For steel framing, remove and replace nail).
PAINTING CEMBOARDflashing
• Do not use aluminum fasteners, staples, or clipped head nails.
WITH FACTORY BUILT COLOR TECHNOLOGY
When repainting Factory Built Color products, the manufacturer
recommends the following regarding surface preparation and topcoat
application: Step flashing
• EnsureSelf-adhering
the surface is clean, dry, and free of any dust, dirt, or mildew
membrane
• Repriming is normally not necessary
siding
kickout
• 100% acrylic topcoats are recommended
Self-adhering
Do not 1/4" gap
eaves membrane
siding
• DO NOT use stain or oil/alkyd
base
paints on Cemboard products
Caulk
Kickout
• Apply finish coat in accordance flashing
with paint manufacturers written
CUT EDGE TREATMENT
1"
instructions regarding coverage, application
methods, and application
Drip edge
fascia
Caulk, paint or prime flashing
all field cut edges.
temperature
gutter and end cap
Housewrap
RECOGNITION: In accordance with ICC-ES Legacy Report NER-405, Cemplank® lap siding is recognized as a suitable alternate to that specified in: the BOCA National Building Code/1999,
the 1997 Standard Building Code, the 1997 Uniform Building Code, the 1998 International One-and Two-Family Dwelling Code, the 2003 nternational Building Code, and the 2003
International Residential Code for One-and Two-Family Dwellings. Cemplank® lap siding is also recognized for application in the following: City of Los Angeles Research Report No. 24862,
State of Florida listing FL#889, Dade County, Florida NOA No. 02-0729.02, U.S. Dept. of HUD Materials Release 1263c, Texas Department of Insurance Product Evaluation EC-23, 24"
City of New
York MEA 223-93-M, and California DSA PA-019. These documents should also be consulted for additional information concerning thestud
suitability of this product for specific applications.
O.C. max.
stud
water-resistive
barrier
24"
O.C. max.
© 2015 JHTL All rights reserved. TM, SM, and ® denote trademarks or registered trademarks of JHTL.
Minimum overlap
CEM1004 10/15 for Both Face
and Blind Nailing
3/4"-1"
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