Hardiflex Ceiling

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Installation Guide
PHILIPPINES | SEPTEMBER 2010
1 INTRODUCTION
HardieFlex™ Fiber Cement Boards are tough, flexible building
products, unsurpassed for economy, versatility and ease of working.
They are ideal for use in lightweight construction of timber and light
gauge steel framed internal ceilings.
HardieFlex™ Fiber Cement Boards are available in a range of
thicknesses and come in a natural grey colour with an
off-the-machine smooth surface which will readily accept most
site applied finishes.
For standard residential ceiling application, use HardieFlex™
Ceilings Lite. Where a robust and a more stringent quality finish is
required, HardieFlex™ Ceilings must be used.
The features and benefits of HardieFlex™ Fiber Cement Boards for
ceilings are:
• Durable for longer-lasting homes.
• Creates suitable surface for better paint finish.
• Resistant to damage caused by fire, moisture and termites
that will reduce maintenance cost.
• Total systems offering such as installation guide, onsite technical
training and accessories availability.
The specifier or other responsible party for the project must
ensure the information and details in this guide are appropriate for
the intended application and that specific design and detailing
is undertaken for areas which fall outside the scope of this
documentation.
IMPORTANT NOTES
1 Failure to install, finish or maintain this product in
accordance with applicable building codes, regulations,
standards and James Hardie’s written application
recommendations may lead to personal injury,
affect system performance, violate local building codes, and
void James Hardie’s product warranty.
2 All warranties, conditions, liabilities (direct, indirect or
consequential) and obligations whether arising in contract,
tort or otherwise other than those specified in James
Hardie’s product warranty are excluded to the fullest
extent allowed by law. For James Hardie’s product
warranty information and disclaimers about the information
in this manual, see the section at the end of this manual.
3 The builder must ensure that the product meets aesthetic
requirements before installation. James Hardie will not
be responsible for rectifying aesthetic surface variations
following installation.
4 Make sure your information is up to date. When specifying
or installing James Hardie products, ensure you have the
current manual. If in doubt, or you need more information,
visit www.jameshardie.com.ph or Ask James Hardie™ at
+632-895-5427 or 1800-1888-5427
CONTENTS
1 INTRODUCTION 2
2 PRODUCT DESCRIPTION 3
HardieFlex™ Sheet Sizes 3
Accessories/Tools Supplied by James Hardie 3
Accessories/Tools not Supplied by James Hardie 3
General 4
Durability 4
Storage & Handling 4
Quality 4
3 DESIGN / fRamING 5
Scope 5
Design General 5
Design Responsibility 5
Framing General 5
Framing Timber 5
Framing Steel 5
Framing Preparation 5

4 INSTALLATION 6
Sheet Layout 6
Fasteners 6
Fixing to Ceilings 7
5 HIGH PERfORmING jOINTS 8
Jointing Between HardieFlex™ Sheets 8
Jointing Between HardieFlex™ Ceiling to Concrete Wall 9
Control Joints 9
6 FINISHES & MAINTENANCE 10
General 10
Glancing Light 10
Paint Finishes 10
Cornices 10
Maintenance 10
7 SafE WORKING PRaCTICES 11
Warning 11
Recommended Safe Working Practices 11
Cutting 12
Hole-Forming 12
8 WaRRaNTy 13
WE VaLUE yOUR fEEDBaCK
To continue with the development of our products and systems, we
value your input. Please send any suggestions, including your name,
contact details, and relevant sketches to:
Ask James Hardie

[email protected]
2 PRODUCT DESCRIPTION
Table 1
Table 2
James Hardie recommends the following products for use in conjunction with its Ceiling lining. James Hardie does not supply these products and
does not provide a warranty for their use. Please contact the component manufacturer for information on their warranties and further information on
their products.
PRODUCT DESCRIPTION PRODUCT DESCRIPTION
Polyurethane Sealant
Suitable sealant for use in movement joints.
Spatula
For removal of excess compounds from the
panel surface.
HardieBlade
TM
Saw Blade
185mm Polydiamond blade, for fast, clean
cutting of James Hardie
®
fiber cement board.
Backing Tape
Shiny waxy non-stick tape.
PRODUCT DESCRIPTION PRODUCT DESCRIPTION
Scoring Knife
Scoring tool for easy cutting.
Part Code: 80003
HardieFlex
TM
Screw
7 x 20 Screw
Part Code: 81038
HardieFlex™ Nails
32 x 2.3mm galvanised.
Part Code: 81005
HardieFlex™ Putty Jointing Compound
Appearance: grey paste
Pot life at 20
o
C: 90-120mins.
Drying time at 20
o
C : 60mins
Note: Drying time will vary depending on
temperature
Comes in 25kg.
Part Code: 82024
Perforated Paper Tape
Joint reinforcing tape.
Part Code: 81026
ACCESSORIES / TOOLS SUPPLIED BY JAMES HARDIE
L
e
n
g
th W
id
th
HardieFlex™ Ceilings Lite HardieFlex™ Ceilings
Length (mm) 2438mm 2438mm
Width (mm) 1219mm 1219mm
Thickness (mm) 3.5mm 4.5mm
Approx. Weight (kg) 15kg 19kg
All dimensions and masses are approximate and subject to manufacturing tolerance.
HARDIEFLEX™ SHEET SIZES
Table 3
ACCESSORIES / TOOLS NOT SUPPLIED BY JAMES HARDIE
3
CEILING INSTALLATION MANUAL SEPTEMBER 2010
GENERAL
HardieFlex™ Cement boards are cellulose fiber
reinforced cement building products. The basic
composition is portland cement, ground sand, cellulose
fiber and water. HardieFlex™ Cement Boards are
manufactured to AS/NZS 2908.2 ’Cellulose-Cement
Products Part 2: Flat Sheets’ (ISO 8336 ’Fiber Cement
Flat Sheets’). HardieFlex™ Cement Boards are classified
Type B, Category 3 in accordance with AS/NZS 2908.2.
Asbestos-Free: HardieFlex™ Cement Boards do not
contain any asbestos (chrysotile) fibers.
DURABILITY
Resistance to Moisture/Rotting
HardieFlex™ Cement Boards have demonstrated
resistance to permanent moisture-induced deterioration
(rotting) by passing the following tests in accordance with
AS/NZS 2908.2:
• Water Permeability (Clause 8.2.2).
• Warm Water (Clause 8.2.4).
• Heat Rain (Clause 6.5).
• Soak Dry (Clause 8.2.5).
Resistance to Fire
HardieFlex™ Fiber Cement Boards are suitable where
non-combustible materials are required in accordance
with C1.12 of the Building Code of Australia.
James Hardie building products have been tested by
CSIRO in accordance with aS/NZS 3837 and are
classified as conforming to Group 1 material (highest and
best result possible), with an average specific extinction
area far lower than the permissible 250m²/kg, as
referenced in Specification C1.10a of the BCA.
Resistance To Termite Attack
Based on testing completed by CSIRO Division of forest
Products and Ensis Australia, James Hardie building
products have demonstrated resistance to termite attack.
STORAGE AND HANDLING
Sheets must be installed in a dry state. Sheets must be
laid flat under cover on a smooth level surface clear of
the ground to avoid exposure to water or moisture, etc.
HardieFlex™ Cement Board is resistant to permanent
moisture damage when installed as directed (as outlined
in the manual).
QUALITY
James Hardie conducts stringent quality checks to
ensure that any product manufactured falls within our
quality spectrum. It is the responsibility of the builder to
ensure that the product meets aesthetic requirements
before installation. James Hardie will not be responsible
for rectifying obvious aesthetic surface variations
following installation.
SEPTEMBER 2010 CEILING INSTALLATION MANUAL
4
3 DESIGN / FRAMING
SCOPE
This manual covers the use of the HardieFlex™ Cement
Boards in a residential ceiling application over a seasoned
timber frame or a light gauge steel frame.
DESIGN
General
All design and constuction must comply with the
appropriate requirements of the current National Building
Code of the Philippines and other applicable regulations
and standards.
Responsibility
The specifier or other party responsible for the project
must ensure that the details in this specification are
appropriate for the intended application and that additional
detailing is performed for specific design or any areas that
fall outside the scope of this specification.
FRAMING
General
HardieFlex™ Cement Boards can be fixed to either timber
or light gauge domestic type steel framing. The framing
used must comply with the relevant building regulations
and standards and the requirements of this manual.
NOTE: Ensure all sheet edges are fully supported with
framing members.
Timber
Use only seasoned (kiln dried) timber. Unseasoned timber
must not be used, as it is prone to shrinkage and can
cause the sheets and frames to move. The minimum stud
width at joints is 35mm.
Steel
The size of the steel stud framing should be 0.55mm-
1.6mm base metal thickness (BMT).
Steel sections should be galvanized or zinc coated. Frame
members must not be less than 35mm wide.
Preparation Of Frame
Ensure frame is square and straight, and work from a
central datum line. Frames must be straight to provide a
flush face to receive the sheeting.
A suggested maximum tolerance of between 3mm and
4mm in any 3m length of frame will give best results.
HardieFlex™ Cement Boards will not straighten
excessively warped or distorted frames and any warping
may still be visible after the internal lining is applied.
5
CEILING INSTALLATION MANUAL SEPTEMBER 2010
SHEET LAYOUT
Install the HardieFlex™ Fiber Cement Boards in the
direction of the framing members i.e. place the long
edges of the sheets parallel to the main framing members.
FASTENERS
For steel frames, use HardieFlex™ Scew (7x20). For timber frames, use (32 x 2.3m) galvanized HardieFlex™ Nails
Table 5
Wind Zone
HardieFlex™ Ceilings Lite HardieFlex™ Ceilings
Timber Frame Steel Frame Timber Frame Steel Frame
@ Joist @ Noggings @ Joist @ Noggings @ Joist @ Noggings @ Joist @ Noggings
2 (200km/hr) 100mm 100mm 175mm 200mm
3 (125km/hr) 225mm 200mm 300mm 200mm 200mm 200mm 300mm 200mm
Fasteners should be driven flush as shown in Figure 2 and should be screwed as close as possible to the stud corners to avoid deflection of the stud
flange as shown in Figure 3.
FIGURE 2 FASTENER DEPTH FIGURE 3 SCREW FASTENING
FIGURE 1 SHEET LAYOUT
FRAME DISTANCES
Board Joist Noggings
HardieFlex™ Ceilings Lite
406 mm (1.3 ft.) 2438 mm (8 ft)
HardieFlex™ Ceilings
Table 4
4 INSTALLATION
FASTENER SPACING (MM)
SEPTEMBER 2010 CEILING INSTALLATION MANUAL
6
FIXING TO CEILINGS
In residential applications, sheets should not be fixed directly to the
underside of roofing rafters or trusses. Cross battens should
be provided at the appropriate framing centers (Figure 6).
FIGURE 4 BUTT JOINTS PARALLEL TO FRAMING
FIGURE 5 THERE SHOULD BE NO GAPS BETWEEN SHEETS
FIGURE 6 ROOF BATTEN
7
CEILING INSTALLATION MANUAL SEPTEMBER 2010
5 HIGH PERFORMING JOINTS
Step 2 Wet the board with clean water. Use clean
sponge and water and ensure board is clean of dust.
Step 3 Apply 1st Coat of HardieStop Jointing Compound.
Apply enough to cover the joint at least 150mm wide.
Use a clean spatula. apply maximum of 1 meter to ensure
compound remains pliable.
Step 4 Immediately install Perforated Paper Tape
Ensure there are no voids under tape using the spatula
and remove excess compound. The paper tape should be
slightly moistened with a mist spray gun.
Step 5 Immediately apply 2nd Coat of HardieStop
Jointing Compound.
Make sure to cover the paper tape. The ideal coat spread
is 250mm to even out the surface of the board. Apply
another coat if necessary. Let dry and then sand.
Step 1 Install HardieFlex™ Sheets without gap as
shown in Figure 5.
JOINTING BETWEEN HARDIEFLEX
TM
SHEETS
FASTENER HEADS
COVER ALL FASTENER HEADS WITH THE HARDIESTOP™ COMPOUND
JOINTING BETWEEN HARDIEFLEX
TM
CEILING TO
CONCRETE WALL
Install HardieFlex™ Sheets with a 1:1 gap.
Insert a backing tape in between the gap.
Width = Depth
CONTROL JOINTS
Control Joints are required in long runs of HardieFlex™
Ceilings in either direction. These joints are designed to
take up the structural movement between the sheets and
the building frame. They may also be required in
ceilings where they change direction or continue into
passage ways. Control joints should also be provided at
frame junctions/joints such as wall intersections.
FIGURE 9 CONTROL JOINT
Apply polyurethane sealant to fill the void flush with sheet.
Stud Thickness Control Joint Spacing (m)
Steel Frames 0.55 - 0.75mm BMT 9m
0.80 - 1.6mm BMT 6m
Timber Frames 7.2m
Table 6
MAXIMUM SPAN FOR CONTROL JOINTS
FIGURE 10 EXPANSION JOINT
FIGURE 7 1:1 GAP
FIGURE 8 POLYURETHANE SEALANT
9
CEILING INSTALLATION MANUAL SEPTEMBER 2010
GENERAL
HardieFlex™ Cement Board may be finished with paint
as required. The application and maintenance of these
finishes must be in accordance with the manufacturer’s
specifications.
GLANCING LIGHT
In some instances, due to glancing light, set joints may
be noticeable in HardieFlex™ Ceilings, especially where
paint finishes have a high gloss level. Work closely with
your builder or designer to minimize this.
Artificial lighting needs to be considered in relation to
ceilings (e.g. down-lights in ceilings above set joints
in walls). Ceiling should run in the direction of the light
source (at right angles to windows).
Where glancing light is an issue, its effect can be
lessened by:
n
The use of curtains or blinds
n
Artificial light shading devices
n
Use of light coloured, matt finish paints
PAINT FINISHES
Prior to application of paint finishes, remove any residual
sanding dust and ensure the surface is suitable for paint
application.
HardieFlex™ Cement Boards must have a minimum
of two coats of acrylic/latex paint applied after fixing.
Coating should be completed within 1 month of sheet
erection. Use only quality 100% acrylic/latex paints.
Economy paints are not recommended because generally
they are less well bound, less moisture resistant, and
more prone to mold growth. Damp, shady situations,
agriculture or sea spray environments may induce an
extra tendency for mold. Use mold inhibiting and alkaline
resistant undercoats and consult the paint manufacturer
for maximum mold resistant paints. Always follow
the paint manufacturer’s recommendation for paint
suitability, mixing and application.
NOTE
Use of a ‘sealer coat’ or ‘preparation undercoat’ is
recommended.
6 FINISHES AND MAINTENANCE
CORNICES
It is recommended that the edge of the HardieFlex™
Cement Board is wetted with a sponge prior to adhesive
fixing of cornices.
MAINTENANCE
James Hardie recommends that the cleaning and
maintenance of all finishes be undertaken regularly as
per the recommendations of the manufacturer. Joints
must also be maintained and be free of dirt and grime.
10
SEPTEMBER 2010 CEILING INSTALLATION MANUAL
HardieFlex™ Fiber Cement Board has No Asbestos and No
Chysotile fibers.
WARNING: DO NOT BREATHE THE DUST AND CUT ONLY IN
WELL VENTILATED AREA
James Hardie products contain sand, a source of
respirable crystalline silica which is considered by some
international authorities to be a cause of cancer from
some occupational sources. Breathing excessive amounts
of respirable silica dust can also cause a disabling and
potentially fatal lung disease called silicosis, and has been
linked with other diseases. Some studies suggest smoking
may increase these risks. During installation or handling:
(1) work in outdoor areas with ample ventilation; (2)
minimize dust when cutting by using either a score and
snap knife, fiber cement shears or, where not feasible, use a
HardieBlade™ Saw Blade and dust-reducing circular saw
attached to a HEPA vacuum; (3) warn others in the
immediate area to avoid breathing dust; (4) wear a
properly-fitted, approved dust mask or respirator (e.g.
N95) in accordance with applicable government regulations
and manufacturer instructions to further limit respirable
silica exposures. During cleanup, use HEPa vacuums or
wet cleanup methods – never dry sweep. For further
information, refer to our installation instructions and
material Safety Data Sheets available at
www.jameshardie.com.ph. faILURE TO aDHERE TO
OUR WaRNINGS, maTERIaL SafETy DaTa SHEETS, aND
INSTaLLaTION INSTRUCTIONS may LEaD TO SERIOUS
PERSONaL INjURy OR DEaTH.
CUTTING OUTDOORS
1.
2.
Position cutting station so that wind will blow dust away from
the user or others in working area.
Use one of the following methods based on the required
cutting rate:
Best
n
Score and snap
n
Hand guillotine
n
Fibreshear
Better
n
Dust reducing circular saw equipped with HardieBlade


Saw Blade and HEPA vacuum extraction.
Good
n
Dust reducing circular saw equipped with HardieBlade


Saw Blade.
CUTTING INDOORS
n
Cut only using score and snap, hand guillotine or fibreshears
(manual, electric or pneumatic).
n
Position cutting station in a well-ventilated area.
SaNDING/REBaTING/DRILLING/OTHER maCHINING
When sanding/rebating/drilling or machining you should always
wear a N95 dust mask and warn others in the immediate area.
ImPORTaNT NOTES
1.
2.
3.
4.
5.
6.
For maximum protection (lowest respirable dust production),
James Hardie recommends always using “Best” - level cutting
methods where feasible.
NEVER use a power saw indoors.
NEVER use a circular saw blade that does not carry the
HardieBlade

logo.
NEVER dry sweep - Use wet suppression or HEPa vacuum.
NEVER use grinders.
aLWayS follow tool manufacturers’ safety recommendations.
P1 or P2 respirators should be used in conjunction with above
cutting practices to further reduce dust exposures. Additional
exposure information is available at www.jameshardie.com.ph 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 James
Hardie for further information.
7 SAFE WORKING PRACTICES
JAMES HARDIE RECOMMENDED SAFE WORKING PRACTICES
11
CEILING INSTALLATION MANUAL SEPTEMBER 2010
CUTTING
Refer to Recommended Safe Working Practices before
starting any cutting or machining of product.
Score and Snap
‘Score-and-Snap’ is a fast and efficient method of cutting
HardieFlex™ Cement Boards using James Hardie’s
special tungsten tipped score-and snap knife.
n
Preferably score from the face side of the HardieFlex™
Cement Board.
n
Score against a straight edge and repeat the action to
obtain adequate depth for clean break - normally 1/3 of
sheet thickness.
n
Snap upwards to achieve break.
n
Smooth any rough edges with a rasp or sandpaper.
Hand Guillotine
Make guillotine cut on the off-cut side of line to allow for
the thickness of the blade.
Fibreshear Heavy Duty
An electrically powered, fast, clean and effortless way
of cutting James Hardie building products, especially
around curves such as archways. Make fibreshear cut on
the ‘off-cut’ side of the line to allow for the thickness of
the shear.
HardieBlade

Saw Blade
The HardieBlade

Saw Blade used with a dust-reducing
saw and HEPA vacuum extraction allows for fast, clean
cutting of James Hardie fibre cement products. A
dust-reducing saw uses a dust deflector or a dust
collector which can be connected to a vacuum system.
When sawing, clamp a straight-edge to the sheet as a
guide and run the saw base plate along the straight edge
when making the cut.
HOLE-FORMING
For smooth clean cut circular holes:
n
Mark the center of the hole on the sheet.
n
Pre-drill a pilot hole.
n
Using the pilot hole as a guide, cut the hole to the
appropriate diameter with a hole saw fitted to a heavy
duty electric drill.
For irregular holes:
n
Small rectangular or circular holes can be cut by
drilling a series of small holes around the perimeter
of the hole then tapping out the waste piece from the
sheet face.
n
Tap carefully to avoid damage to sheets, ensuring the
sheet edges are properly supported.
James Hardie Philippines, Inc. (“James Hardie”) warrants
to the first purchaser of its fiber cement flat sheet
products known as HardieFlex™ Sheet (the “Product”) for
a period of 10 years from the date of purchase, that: the
product will be free from defects due to defective factory
workmanship or materials and, subject to compliance
with the conditions below, will be resistant to cracking,
rotting, fire and damage from termite attacks to the
extent set out in James Hardie’s relevant published
literature current at the time of installation.
The recommendations in James Hardie’s brochures
are formulated along the lines of good building practice
but are not intended to be an exhaustive statement of
all relevant data. As the successful installation of these
systems depends on numerous factors outside the
control of James Hardie, such as quality of workmanship
and particular design requirements, James Hardie
accepts no responsibility for or in connection with the
quality of the recommendations or the systems or their
suitability for any purpose when installed.
CONDITIONS OF WARRANTY
This warranty is subject to the following conditions:
• The customer must provide proof of purchase and
make a claim within 30 days after the defect would
have become reasonably apparent.
• The Product must be stored and installed and
maintained strictly in accordance with the relevant
James Hardie literature current at the time of
installation and in accordance with good building
practice. The HardieFlex™

cement board must only
be used for internal ceilings.
• The Product must be maintained in accordance with
the relevant James Hardie literature, and no liability
or responsibility whatsoever will be accepted in
relation to any Product which has not been properly
maintained.
• james Hardie will not be liable for claims, damages
or defects arising from, or in any way attributable
to: poor workmanship; settlement or structural
movement and/or movement in materials to
which the Product is attached; incorrect design
of the structure; misuse, such as chicken houses,
pigpens, cattle barns, farms, hydroponics vegetable
houses, hot houses, saunas, buried applications,
furnaces, heat-rooms or kilns; acts of God including
earthquakes, cyclones, floods or other severe
weather conditions or unusual climatic conditions;
efflorescence or performance of paint or coatings,
jointing compounds, fasteners and other accessories
applied to the Product or lack thereof; growth of
mold, mildew, fungi, bacteria, or any organism on any
Product surface or Product (whether on the exposed
or unexposed surfaces); or, defects due to exposure to
corrosive or toxic substances including organic acids.
• james Hardie will not be liable for any other claims,
damages or losses (whether direct or indirect)
including property damage, personal injury,
“consequential loss”, economic loss or loss of profits
arising in contract or negligence or howsoever arising.
• This warranty is not transferable.
WARRANTY CLAIMS
James Hardie will use its reasonable endeavours to
satisfy its obligations under this warranty within 60 days
after a claim is made. If James Hardie is reasonably
satisfied a claim may be made under this warranty it will
either (at its option) supply replacement Products, rectify
the Product, or pay for the cost of replacement products
or rectification of the affected Product. If meeting a claim
under this warranty involves re-coating of sheets, there
may be slight colour differences between the original
and re-coated sheets due to the effects of weathering
and variations in materials over time. After the 1
st
year
through to the 10
th
year, James Hardie

may reduce any
payment it elects to make for defective Products by 10%
of the purchase price of the defective Product for each
year since its purchase.
Any refund or material replacement or compensation
provided by James Hardie

pursuant to this warranty will
constitute a settlement and release of all claims made
by the customer for damages or other relief. This will be
the sole, exclusive remedy of the customer unless the
customer has rights at law which cannot be excluded
or modified, in which case those rights will apply to the
customer.
8 WARRANTY
13
CEILING INSTALLATION MANUAL SEPTEMBER 2010
The statements in this warranty constitute the only
warranty extended by James Hardie

for the Products.
James Hardie

disclaims all other warranties, expressed
or implied, including any implied warranties of
merchantability or fitness for a particular purpose, except
where the product purchase is subject to the Consumer
Act of the Philippines, in which instance the duration of
any applicable implied warranty is limited to 10 years
or the period provided for by law, whichever is shorter.
Nothing in this warranty is to be construed as excluding
or modifying any rights of the customer which cannot be
excluded or modified at law.
Copyright September 2010 James Hardie

Philippines Inc
TM
and
®
denotes a trademark or registered mark owned
by James Hardie Technology Limited.
For more information on HardieFlex™

Cement Boards or
any other James Hardie product call the James Hardie
Customer Service Hotline on +632-8955427 or
1800 1888 5427
14
SEPTEMBER 2010 CEILING INSTALLATION MANUAL
NOTES
2010 James Hardie Philippines Inc. TM and denote a trade mark or registered mark owned by James Hardie Technology Limited. c R
Call 1800 1888 5427
or phone 895 5427
Ask JamesHardie
TM
www.jameshardie.com.ph

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