James Hardie ExoTec facade panel, ExoTec fixing system, ExoTec top hat, ExoTec gasket snap strip, backing strip, HardieWrap weather barrier, HardieBreak thermal strip, HardieBlade saw blade, base coat, joint sealant Installation guide

Facade systems
Installation guide
ExoTec® facade panel
and fixing system
AUSTRALIA JULY 2014
CONTeNTS
1 INTRODUCTION
2
2
3
3
4
INSTALLATION OVeRVIeW
PRODUCT INFORMATION
4
SAFe WORkINg PRACTICeS
5
ExoTec® facade panel
Accessories/tools supplied by James Hardie
Accessories/tools not supplied by James Hardie
Warning
Recommended safe working practices
Working instructions
Hole-forming
Storage and handling
Quality
4
4
4
5
5
5
5
5
5
1 INTRODUCTION
The James Hardie ExoTec® facade panel provides a durable, expressed
joint panel appearance for building facades and fascias and together
with the ExoTec® fixing system, offers versatility to architects and builders.
A variety of design styles can be created including curved walls, panels
installed upright vertically, horizontally or in a brick pattern.
A wide range of decorative finishes can be used including site-applied
acrylic textures and available factory-applied polyurethane plain colours
and metallic finishes.
This document is a guide only. It is intended for use by builders, cladding
installers and other contractors who may be involved with the installation
of the ExoTec facade panel and fixing system.
5
PRePARATION
6
This document must be read in conjunction with the project specific
drawings and specifications as well as the current James Hardie ExoTec
facade panel and fixing system Technical Specification.
6
PANeL AND TOP hAT LAyOUT
7
Both the 9mm and 12mm thick ExoTec facade panels may be used in
wall facades, fascias and soffits.
7
INSTALLATION
8
Top hat
Panel
Fastening methods - countersunk
Fastening methods - exposed
Backing strip installation
Sealant filled joints
Curved facades
8
9
10
11
12
13
13
8
MOVeMeNT jOINTS
13
9
jUNCTIONS
14
Base slab
Head slab
Soffit junction
14
15
15
10 exTeRNAL CORNeRS
16
11 INTeRNAL CORNeRS
17
12 WINDOWS
18
13 PARAPeT DeTAILS
21
14 FINIShINg
21
15 MAINTeNANCe
22
16 WARRANTy
23
General
Panels exposed to direct sunlight
21
21
We VALUe yOUR FeeDBACk
To continuously improve 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™
Fax 02 9638 9535
[email protected]
If you are an installer…
Ensure that you follow the design, moisture management and associated
details and material selection provided by the designer. This installation
manual must be read in conjunction with the ExoTec facade panel
technical specification.
If you are a specifier…
or other responsible party for a project, ensure the information in these
specifications is appropriate for the application you are planning and that
you undertake specific design and detailing for areas which fall outside
the scope of these specifications.
Make sure your information is up to date
When specifying or installing James Hardie products, ensure you have the
current manual. If you’re not sure you do, or you need more information,
visit www.jameshardie.com.au or Ask James Hardie™ on 13 11 03
NOTe
All dimensions shown are in millimetres unless noted otherwise. All
Australian Standards referenced in this manual are current edition and
must be complied with.
2 INSTALLATION OVeRVIeW
Prepare substructure,
see page 6
For top hat installation
details, see page 8
For parapet details
details, see page 21
For fixing
ExoTec backing strip,
see page 12
For window
flashing details,
see page 18
For panel
fixing details,
see page 9
For external corner
details, see page 16
For internal corner
details, see page 17
For slab
junction details,
see page 14
FIgURe 1 INSTALLATION OVeRVIeW
hardieWrap™ weather barrier
HardieWrap™ weather barrier must be installed behind Exotec® Facade
Panel and Fixing system in accordance with the AS/NZS 4200.2 ‘Pliable
building membranes and underlays – Installation’ and HardieWrap™
Technical Data Sheet.
HardieWrap™ weather barrier delivers a tripleshield of protection to help
against external weather penetration, internal condensation build-up and
external heat penetration. Additionally, it enhances the wall thermal
performance, please refer to www.jameshardie.com.au or
www.accel.com.au for more information.
If using an alternate product in lieu of HardieWrap™ weather barrier, the
designer must ensure that the product is fit for purpose and it has the
following properties in accordance with AS/NZS 4200.1:
n
n
Vapour barrier - low or medium
Water barrier - high
In hot humid areas of Australia, HardieWrap™ weather barrier may not
be suitable, refer to the building designer for a suitable membrane and
Ask James Hardie® on 13 11 03.
Soft compressible insulation installed between the front of the wall studs
and directly behind the external cladding can cause installation issues
and is thus not recommended.
Thermal Break
For steel frames, the Building Code of Australia sections J1.5 and 3.12.1
volumes 1 and 2 respectively, state for both residential and commercial
buildings a thermal break with an R 0.2m2 K/W must be installed behind
external cladding where the cladding and internal lining make direct
contact with the same steel frame. James Hardie® recommends the
HardieBreakTM Thermal Strip. Refer to the HardieBreakTM thermal strip
installation guide for more information.
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
3
3 PRODUCT INFORMATION
exOTeC FACADe PANeL INFORMATION
PRODUCT
DeSCRIPTION
qUANTITy / SIze (NOMINAL)
exoTec facade panel
Dense compressed panel. Square edge. Factory sealed on all six sides.
Each panel has a distinctive white face, which accepts a wide range of paint
finishes. The panel must be installed with the white side facing the exterior
of the structure. Nom. density: 1550kg/m3
Thickness
9mm
Width
900mm
1200mm
12mm
1200mm
Lengths
1800, 2400, 3000
1800, 2100
2400, 2700, 3000
2400, 3000
*All dimensions and masses are approximate and subject to manufacture tolerances.
PRODUCT / ACCeSSORIeS / TOOLS SUPPLIeD By jAMeS hARDIe
ACCeSSORIeS
DeSCRIPTION
exoTec® Top hat
A rolled metal section, for use with Exotec® facade panel and fixing system, designed to span vertically across
the building structure to support facade panels and isolate differential movement of the panels from those of
the structure. 124mm wide x 35mm deep x 1.15mm gauge thick. (Approximately)
james hardieTM Intermediate Top hat
A metal top hat installed vertically for use with ExoTec® and ComTex® façade panel and fixing system, for
intermediate sheet support. 50mm wide x 35mm deep x 1.15mm gauge thick. (Approximately)
qUANTITy/SIze (APPROx)
45 per pack
6,000mm (304572)
7,200mm (304571)
exotec® gasket Snap Strip. 3,620mm long
For use with the ExoTec® facade panel and fixing system, this gasket snap strip is specially designed to
clip into the ExoTec® Top Hat at vertical façade panel joins to cover fixings to the structure and to provide an
initial weather seal and drainage using a neoprene gasket.
10 per pack
(305556)
james hardieTM Backing Strip.1,190mm, 2390mm, 2990mm
A weather seal at horizontal panel joints for use with ExoTec® facade panel and fixing system and ScyonTM
MatrixTM cladding.
10 per pack
1,190mm (305557)
2,390mm (305558)
2,990mm (305559)
james hardieTM Façade Washers
Facade washers used for exposed fastener fixing with ExoTec® facade panel and fixing system and ScyonTM
MatrixTM cladding.
1000 per bag
(305565)
james hardieTM Base Coat. 4kg tub, 15kg bag
A water-resistant base coat compound used to finish over countersunk fasteners with epoxy.
4 per box - 4kg, 1 each - 15kg
4kg tub (305535)
15kg bag (305591)
james hardieTM joint Sealant, 300ml cartridge
A general purpose, paintable, exterior grade polyurethane joint sealant.
20 per box
(305534)
hardieBreak™ thermal strip
A building code requirement and is installed behind James Hardie external cladding over metal framing
and HardieWrap™ weather barrier. Refer to HardieBreak™ thermal strip installation guide.
Unit size 43 x 12 x 2750mm.
45 per pack
(305612)
hardieWrapTM weather barrier
A non-perforated, highly breathable and reflective safe-glare weather barrier designed to be used
behind ExoTec® facade panel and fixing system to help protect the building.
Unit size 2750mm x 30000mm.
1 Each
(305664)
hardieBladeTM Saw Blade. 185mm diameter
A 185mm diameter poly-diamond blade for fast and clean cutting of James Hardie fibre cement.
1 Each
(300660)
50 per pack
6,000mm (302701)
7,200mm (302700)
TOOLS
PRODUCT / ACCeSSORIeS / TOOLS NOT SUPPLIeD By jAMeS hARDIe
James Hardie recommends the following products for use in conjunction with ExoTec facade system. James Hardie does not supply these products and does not provide
a warranty for their use. Please contact component the manufacturer for information on their warranties and further information on their products.
ACCeSSORIeS
DeSCRIPTION
ACCeSSORIeS
DeSCRIPTION
Miscellaneous light gauge pressed metal section
Sections 1mm minimum to 1.2mm thickness
(maximum) corrosion resistant metal. Used in internal
and external corner details.
epoxy flush sealing (2 part)
Countersunk head screws are flush sealed using
megapoxy P1 or Hilti CA 125. Where the temperature
is below 15º use Hilti CA 273.
Bond breaker tape
Used when filling vertical joints to prevent sealant from
bonding to top hat. Refer to the ExoTec facade panel
and fixing system Installation Manual for suitable sealant.
Cordless drill
Recommended tool for drilling holes and fastening
screws.
6mm masonry drill
Provides a 6.2mm to 6.3mm diameter hole. Used to
pre-drill clearance holes for fasteners.
Base coat applicator
A recommended method of applying James Hardie base
coat over epoxy filled countersunk screw heads.
This method minimises waste. Base coat is easily sanded
by comparison to epoxy fillers.
Countersunk head drill
6mm Countersunk bit.
Flexible tape
A flexible self-adhesive tape used in preparation of a
window. Refer to the window installation section in this
Installation Manual for more information.
Countersunk fasteners
No. 10x30 countersunk head self drilling screws - Class 3
Minimum coating. Fasteners must have the appropriate
level of durability required for the intended project.
Fasteners must be fully compatible with all other material
that it is in contact with to ensure the durability and
integrity of assembly. Contact fastener manufacturers
for more information.
exposed head fasteners
No. 10x25mm pan, wafer or hex head self drilling screws
Class 3 minimum coating. Fasteners must have the
appropriate level of durability required for the intended
project. Fasteners must be fully compatible with all other
material that it is in contact with to ensure the durability
and integrity of assembly. Contact fastener manufacturer
for more information.
FASTeNeRS
4 SAFe WORkINg PRACTICeS
WARNINg - DO NOT BReAThe 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) minimise dust when cutting by using either ‘score and snap’ knife, fibre
cement shears or, where not feasible, use a HardieBladeTM 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. P1 or P2) in accordance with
applicable government regulations and manufacturer instructions to further
limit respirable silica exposures. During clean-up, 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.au. FAILURE TO ADHERE TO OUR
WARNINGS, MATERIAL SAFETY DATA SHEETS, AND INSTALLATION
INSTRUCTIONS MAY LEAD TO SERIOUS PERSONAL INJURY OR
DEATH.
jAMeS hARDIe ReCOMMeNDeD SAFe WORkINg PRACTICeS
CUTTINg OUTDOORS
1. Position cutting station so wind will blow dust away from the user or
others in working area.
2. Use a dust reducing circular saw equipped with HardieBladeTM Saw Blade
and HEPA vacuum extraction.
SANDINg/DRILLINg/OTheR MAChININg
When sanding, drilling or machining you should always wear a P1 or P2
dust mask and warn others in the immediate area.
IMPORTANT NOTeS
1. NEVER use a power saw indoors.
2. NEVER use a circular saw blade that does not carry the HardieBladeTM logo.
3. NEVER dry sweep - Use wet suppression or HEPA vacuum.
4. NEVER use grinders.
5. ALWAYS follow tool manufacturers’ safety recommendations.
WORkINg INSTRUCTIONS
Refer to recommended safe working practices before starting any cutting
or machining of product.
hardieBladeTM Saw Blade
The HardieBladeTM Saw Blade used with a dust-reducing saw is ideal
for fast, clean cutting of James Hardie fibre cement products. A dustreducing 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:
Mark the centre of the hole on the sheet.
Pre-drill a pilot hole.
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.
n
n
n
For irregular holes:
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.
Tap carefully to avoid damage to sheets, ensuring the sheet edges are
properly supported.
n
n
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.au 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.
STORAge AND hANDLINg
To avoid damage, all James Hardie building products should be stored
with edges and corners of the sheets protected from chipping.
James Hardie building products must be installed in a dry state and
protected from rain during transport and storage. The product must be
laid flat under cover on a smooth level surface clear of the ground to
avoid exposure to water, moisture, etc.
qUALITy
James Hardie conducts stringent quality checks to ensure any product
manufactured falls within our quality spectrum. It is the responsibility of
the builder to ensure the product meets aesthetic requirements before
installation. James Hardie will not be responsible for rectifying obvious
aesthetic surface variations following installation.
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
5
5 PRePARATION
Prior to installation of the ExoTec Facade Panel and Fixing System ensure
that the required preparation steps have been followed, see Figure 2
Install HardieWrap™ weather barrier
or appropriate membrane in accordance
with AS/NZS 4200.2
The use of HardieWrap™ weather
barrier or suitable membrane
is mandatory.
FIgURe 2 PRePARATION OF SUB-STRUCTURe
NOTeS
1 . For high walls it may be necessary to provide flashing to drain the
facade at one or more intermediate levels.
The installation of any barrier must not restrict moisture from reaching
flashings and draining out.
6
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
2. The engineer must limit the deflection of the supporting structure to
span/250 for serviceability Wind Load. See Clause 2.6 of the ExoTec
facade panel and fixing system Technical Specification.
6 PANeL AND TOP hAT LAyOUT
The ExoTec facade panel can be installed upright horizontally or
vertically. The panel layout will determine the location of the ExoTec and
intermediate JH top hats, see Figures 3 to 6. The vertical expressed joints
may be aligned or offset in a brick pattern layout.
INT TH
TH INT TH
INT
TH
INT
TH
INT
TH
TH
ExoTec backing strip
TH
INT
INT
INT
INT
TH
INT
INT
INT
TH
ExoTec backing strip
FIgURe 3 VeRTICAL LAyOUT ALIgNeD gRID PATTeRN
TH INT
key
TH: ExoTec top hat
INT: Intermediate JH top hat
TH
INT
TH
INT
ExoTec backing strip
FIgURe 4 hORIzONTAL LAyOUT BRICk gRID PATTeRN
FIgURe 5 hORIzONTAL LAyOUT ALIgNeD gRID PATTeRN
TH
TH INT TH
INT TH
INT
TH
INT
TH
INT
TH
ExoTec backing strip
FIgURe 6 VeRTICAL LAyOUT BRICk gRID PATTeRN
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
7
7 INSTALLATION
TOP hAT INSTALLATION
ExoTec facade panels must be fixed to:
1) ExoTec top hat for vertical sheet joints.
2) Intermediate JH top hat for supporting the panels between vertical
sheet joints.
FIgURe 7 TOP hAT INSTALLATION
8
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
The top hats must be installed vertically over steel, masonry or timber
structures, see Figure 7. The top hat fixing to the structure must be as
per the engineer’s detail.
PANeL INSTALLATION
Panels are installed with a 10mm nominal expressed joint between
adjacent panels, vertically and horizontally. Vertical joints up to 20mm
width can be formed, with additional care required at installation to ensure
the panel edges cover the ExoTec gasket snap strip on both sides of the
joint. A minimum vertical expressed joint of 6mm is allowed with care.
Horizontal joints are a nominal 10mm.
NOTe
When applying sealant to the edge of the ExoTec facade panel, refer to
page 13 for recommended sealants.
FIgURe 8 TyPICAL PANeL AND FRAMINg LAyOUT
HardieWrap™ weather barrier
FIgURe 9 TOP hAT AND PANeL FIxINg DeTAIL
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
9
FASTeNINg MeThODS
Panels may be fixed to ExoTec top hats and intermediate JH top hats
by either:
1. Countersunk fasteners: flush finished over screw heads with a
suitable epoxy, and then with James Hardie base coat. Generally
used with site-applied acrylic coatings.
2. exposed head screws: using pan, wafer or hex head screws. Used
where pre-finished panels are installed. Exposed head fasteners may
be colour coated to match panel finish.
Fasteners must have the appropriate level of durability required for the
intended project. This is of particular importance in coastal areas, subject
to salt spray and other corrosive environments.
Fasteners must be fully compatible with all other materials that the
fasteners will come in contact with, to ensure the durability and integrity
of assembly.
See Tables 3 and 4, for maximum fastener spacings to top hats for
design wind pressure in the current ExoTec facade panel and fixing
system Technical Specification.
FIgURe 11 COVeR COUNTeRSINk FASTeNeR WITh ePOxy
7. Apply James Hardie base coat over epoxy using the base coat
applicator. See Figures 12, 13, and 14.
Contact fastener manufacturers for more information.
Countersunk Fasteners
1. Mark fastener locations as specified, see Figure 8.
2. Drill clearance holes into ExoTec facade panel, for No.10 gauge
screws using a 6mm countersunk masonry drill, which provides a 6.2
to 6.3mm diameter hole, see Figure 10. countersink hole to a depth
of 2.5mm to 3mm. This is measured from the top of the screw to the
top of the sheet, see Figure 15.
FIgURe 12 FIx BASe COAT APPLICATOR OVeR ePOxy FILLeD
SCReW heAD
6.2
mm
FIgURe 10 DRILL COUNTeRSINk hOLe
NOTe
Do not use hammer action.
3. Fasten panel into top hat with corrosion resistant (Class 3 min.) No.
10 gauge x 30mm countersunk head self drilling fasteners. For areas
within a corrosive environment refer to fastener manufacturer for
suitability and compatibility of fasteners.
4. Clean dust out of holes to ensure adhesion of epoxy sealer.
5. Mix only sufficient epoxy for immediate use. James Hardie
recommends the use of megapoxy P1 or Hilti CA 125. Where the
temperature is below 15ºC, use Hilti CA 273.
6. Cover countersink fastener with epoxy leveled flush with sheet.
To accommodate for second coat do not overfill hole. Allow epoxy
to cure.
10
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
FIgURe 13 APPLy jAMeS hARDIe BASe COAT OVeR ePOxy
FILLeD SCReW heAD
exposed head Fasteners
1. Mark fastener locations as specified (see Figure 8).
2. Drill clearance holes for No.10 gauge screws using a 6mm masonry
drill, which provides a 6.2 to 6.3mm diameter hole.
3. Fasten panel using corrosion resistant (minimum class 3) No. 10
gauge x 25mm pan, wafer or hex head self drilling screw into top
hat. For areas within a corrosive environment, refer to fastener
manufacturer for suitability and compatibility of fasteners and
relevant standard.
4. For exposed head fasteners, ExoTec facade washers are
recommended to be inserted between the panel and the fastener.
FIgURe 14 SCReW heAD COVeReD By ePOxy AND jh BASe COAT
8. Sand James Hardie base coat smooth when cured with 100-120 grit
sandpaper.
HardieWrap™
weather barrier
FIgURe 16 DRILL CLeARANCe hOLe
ExoTec facade
washer
FIgURe 15 COUNTeRSUNk FASTeNeR DeTAIL
NOTe
Do not use hammer action.
Screw
Pre-drilled
hole
FIgURe 17 WASheR AND SCReW INSTALLATION
HardieWrap™
weather barrier
FIgURe 18 exPOSeD heAD FASTeNeR DeTAIL
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
11
BACkINg STRIP INSTALLATION
At horizontal panel joints, ExoTec backing strips are adhered along the
back top edge of the ExoTec facade panel prior to panel installation.
70m
The ExoTec backing
strip is cut the width
of the panel.
m
Sealant fill the back
of the rolled stop
at each end 50mm
long with 3mm
sealant bead.
50m
m
Apply a continuous
6mm diameter bead
of polyurethane
sealant to the backing
strip below the stop.
FIgURe 19 APPLyINg SeALANT TO exOTeC BACkINg STRIP
Fix the ExoTec backing strip to the back
top edge of the ExoTec facade panel.
Ensure the ExoTec backing strip stop is
resting on the ExoTec facade panel
top edge.
When installing,
apply 6mm diameter
sealant bead between
back of the backing strip
and top hat. Continue
bead onto back of panel.
Install panel before sealant
cures to ensure bond.
FIgURe 21 SeALINg exOTeC BACkINg STRIP eND DeTAIL
Install ExoTec facade panel
Apply a continuous
6mm diameter bead
of polyurethane
sealant to the
backing strip above
the stop.
Fix next course of panels
to ExoTec backing strip
above the stop.
mm
Apply a continuous
filler of sealant along
the top edges of the
panel into the
horizontal joint,
refer to sealant
section in this manual.
Allow sealant to cure
before fixing panel.
100
mm
100
Do not fix fasteners
through the ExoTec
backing strip.
Ensure the ends of the
ExoTec backing strip
cover and seal up
against the vertical
neoprene gasket strips.
FIgURe 20 APPLyINg SeALANT TO hORIzONTAL jOINT
12
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
FIgURe 22 INSTALLINg NexT COURSe OF PANeLS DeTAILS
8 MOVeMeNT
jOINTS
SeALANT FILLeD jOINTS
For design wind pressures including and above 4.0kPa, all horizontal and
vertical joints must be continuously sealed over bond breaker tape.
Movement joints are required to limit or remove stresses from the panels.
Movement joints are provided by the nominal 10mm expressed or sealant
filled joints at the perimeter of the panels.
Where joints are required to be sealant filled, James Hardie Joint sealant
and Bostik Seal ‘n’ flex are recommended. Where vertical joints are
sealed, a bond breaker tape must be installed behind the sealant.
Vertical structural joints may be required in the cladding to coincide
with structural joints in the structure to accommodate the anticipated
movement.
CURVeD FACADeS
Horizontal structural joints are required at slab level where the framing
supporting the top hats moves with the creep deflection in the slab.
The ExoTec facade panel and fixing system can be used to follow curved
walls as described below:
For radii 10m or greater
Use 9mm thick ExoTec facade panels which can be easily bent to the
curve of the frame. ExoTec facade panels are to be fixed in a horizontal
orientation only. Refer to Table 4 for maximum top hat spacing.
TABLe 4
MAx. TOP hAT SPACINg FOR VARIOUS RADII
RADII (m)
For details of abutment to masonry walls, refer page 7 in the ExoTec
facade panel and fixing system Technical Specification.
For more information on movement joints, refer page 6 in the ExoTec
facade panel and fixing system Technical Specification.
NOTe
The project engineer is responsible for specifying the anticipated
movement.
MAx. TOP hAT SPACINg (mm)
900mm wide panels
1200mm wide panels
10 to 15
300
400
>15
450
To suit wind loading
NOTeS
1. The closer the spacing of top hats, the less likely they will read
through as facets in the panels, particularly at a small radii.
2. 9mm thick panels may be able to be curved to a smaller radius, but
this is likely to overstress panels.
NOTe
When fixing curved sheets, commence fixing from the centre and work
outwards to avoid “drumminess”.
Particular care should be taken when curving panels to ensure the
supports are on a true curve. If not, apart from poor appearance, there is
a risk of locally over-stressing the panels and causing cracking.
Alternate materials and installation methods are available for radii less
than specified above including, glass reinforced cement (GRC) installed
according to manufacturer’s specifications.
For further information on curved facades contact Ask James Hardie™
on 13 11 03.
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
13
9 jUNCTIONS
All the following CAD details are available at ACCELTM www.accel.com.au.
BASe SLAB jUNCTION
This junction can be treated in a number of ways, two of which are
illustrated in Figures 23 and 25.
HardieWrap™
weather barrier
HardieWrap™
weather barrier
Base flashing
behind
HardieWrap™
weather barrier
Base flashing
behind
HardieWrap™
weather barrier
FIgURe 23 WALL BASe TyPICAL CUTAWAy DeTAIL 1
FIgURe 25 WALL BASe CUTAWAy TyPICAL DeTAIL 2
HardieWrap™
weather barrier
HardieWrap™
weather barrier
FIgURe 24 WALL BASe TyPICAL DeTAIL 1
14
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
FIgURe 26 WALL BASe TyPICAL DeTAIL 2
heAD SLAB jUNCTION
Where the cladding forms a junction with an exposed slab, the detail
must accommodate for slab deflection. Refer to the structural engineer
for appropriate recommendations. A typical deflection head detail is
shown in Figure 27.
SOFFIT jUNCTION
There are many ways of detailing the soffit junction and it is important to
ensure that a drip edge is provided. A typical approach to install the soffit
fascia junction is shown in Figure 28. Ensure the ExoTec gasket snap strip
is installed to the bottom of the fascia panel.
HardieWrap™
weather barrier
HardieWrap™
weather barrier
FIgURe 27 WALL DeFLeCTION heAD USeD UNDeR SLAB
FIgURe 28 TyPICAL SOFFIT DeTAIL
NOTe
It is essential that a continuous flashing is provided behind the top hats
at the base of the fascia to allow moisture to escape. See Table 5 of
the ExoTec facade panel and fixing system Technical Specification for
required height of the flashing upstand.
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
15
10 exTeRNAL CORNeRS
This section contains various methods of finishing external corners using
the ExoTec facade panel and fixing system
HardieWrap™
weather barrier
1mm
corrosion
resistant
metal angle
Intermediate
JH top hat
HardieWrap™
weather
barrier
Continuous
sealant beads
12mm
across face
FIgURe 29 exTeRNAL CORNeR CUTAWAy DeTAIL
9mm ExoTec
facade
panel
HardieWrap™
weather barrier
40
min
Top hat spacing
Structure rigid
at corners, e.g.
bolted together
HardieWrap™
weather barrier
Intermediate
JH top hat
Top hat spacing
Min. 75x75mm L section
1mm min. thick
corrosion resistant
metal angle
FIgURe 30 exTeRNAL CORNeR DeTAIL
16
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
ExoTec
facade panel
FIgURe 31 NON SqUARe exTeRNAL CUTAWAy CORNeR
Top hat fixing
to structure to
engineers detail
Continuous
sealant bead
Intermediate
JH top hat
10 nom. joint
Max. half
of top hat
spacing
FIgURe 32 NON SqUARe exTeRNAL CORNeR
11 INTeRNAL CORNeRS
HardieWrap™
weather barrier
FIgURe 33 INTeRNAL CORNeR CUTAWAy DeTAIL
HardieWrap™ weather barrier
FIgURe 34 INTeRNAL CORNeR DeTAIL
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
17
12 WINDOWS
The ExoTec facade panel and fixing system provides an opportunity to
consider a range of alternative window treatments. The building designer,
in conjunction with the window manufacturer, must consider the adequate
weatherproofing of the window application.
Windows may be flush with the facade using figures 35– 45. This is a
guide only. All windows are different and sufficient provision for moisture
management must be made, see Clause 2.5 of the ExoTec facade panel
and fixing system Technical Specification.
Install HardieWrap™
weather barrier
as per the
HardieWrap™
technical data
sheet and relevant
standard and code
Fix flexible
flashing tape
continuously to
the side of the
window and
HardieWrap™
weather barrier
from the bottom
of the window
head flashing
upstand
Cut HardieWrap™
weather barrier
around window
opening and above
window opening to
the window head
flashing up stand
height
Tape HardieWrap™
weather barrier
continuously to
subframe using
flexible tape, refer
to flexible tape
manufacturer for
suitability and install
instructions
FIgURe 35 INSTALLATION OF hARDIeWRAP™ WeATheR BARRIeR
FIgURe 37 heAD INSTALLATION OF WINDOW
STEP 6
Install head
flashing above
window
STEP 5
Install window
to manufacturer s
specifications
STEP 9
Seal around
head flashing
corner with
flexible tape
STEP 4
Install window
sill
FIgURe 36 INSTALLATION OF WINDOW
18
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
FIgURe 38 INSTALLATION OF WINDOW
STEP 14
Create Min 1mm
thick corrosion
resistant metal
J profile section.
Cut to suit height
of window. Apply
continuous bead
of sealant between
the inside face of
the J profile section
and side of the
window. Fix the
J section to the
substructure.
A steel fabricator
can assist in
creating the metal
profile.
Fix HardieWrap™
weather barrier
flap over
window head
flashing
Install next layer
of HardieWrap™
weather barrier.
Provide minimum
150mm overlap
J profile
section
STEP 15
Apply double sided tape
or sealant bead to outward
facing flange.
FIgURe 39 PRePARATION AROUND WINDOW
Additional top
hats may
be needed
depending on
top hat spacing.
Refer to Table 1
of the James
Hardie ExoTec
facade panel
Technical
Specification
ExoTec top hat
Flexible
tape
25
mm
STEP 16
Cut ExoTec
gasket snap on
strip around
window and sill
STEP 13
Fix ExoTec top
hats hard against
intermediate JH
top hat above
and below
window
intermediate
JH top hat
34
mm
FIgURe 41 INSTALLATION OF j SeCTION
STEP 12
Fix intermediate
JH top hat
50mm from
side of window
Intermediate
JH top hat
60
mm
STEP 17
Apply sealant
between window
and ExoTec
gasket snap on
strip
ExoTec gasket
snap on strip
19
mm
50
mm
FIgURe 40 INSTALLATION OF TOP hATS AROUND WINDOW
FIgURe 42 INSTALLATION OF SNAP ON STRIP
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
19
HardieWrap™
weather barrier
HardieWrap™
weather barrier
Tape HardieWrap™
weather barrier to
sub structure
HardieWrap™
weather barrier
FIgURe 43 OVeRVIeW CUTAWAy SeCTION OF WINDOW
HardieWrap™
weather barrier
continuously
taped to side
window
HardieWrap™
weather barrier
FIgURe 45 CROSS SeCTION OF WINDOW
Flexible
tape fixing
HardieWrap™
weather barrier
to side of window
FIgURe 44 WINDOW jAMB DeTAIL
20
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
13 PARAPeT
DeTAILS
14 FINIShINg
geNeRAL
ExoTec facade panels will readily accept a wide variety of applied
finishes, including site-applied textures and factory finishes.
Metal capping
Timber support
For site-applied finishes (acrylic coatings), follow the paint manufacturer’s
recommended advice to adequately cover the sanded smooth James
Hardie base coat filler applied over the epoxy filled concealed fixings
(refer to fixing section).
In order to seal cut edges or sanded patches two coats of an appropriate
primer should be applied at the time of cutting or sanding e.g. Dulux
AcraPrime 501/1 (water based).
The face and edges of the panels must be coated in accordance with the
paint manufacturer’s recommendations.
Metal hold-down clips
Parapet lining behind
ExoTec facade panel
For further information contact the service centre of the relevant paint
company, as follows:
n
n
n
Dulux Trade Customer Service on 13 23 77
Taubmans Customer Service on 13 16 86
Wattyl Hotline on 13 21 01
Polyurethane paints are not suitable as a site-applied finish but can be
factory coated prior to installation. Pre-finished panels are generally
installed using exposed head fasteners
Some environments require special coatings. Painting selection and
specifications are dependant on the paint chosen.
Refer to the paint manufacturer.
FIgURe 46 PARAPeT CAPPINg CUTAWAy DeTAIL 1
Fixing tiles onto ExoTec facade panels is not recommended.
PANeLS exPOSeD TO DIReCT SUNLIghT
The face or rear of the panels must not be exposed to direct sunlight
for any period greater than three months. The face must be over-coated
as recommended by the paint companies mentioned above. However,
if the rear clear sealer is exposed to direct sunlight by its application,
e.g. fascias, plantrooms, etc., then the clear sealer must be coated with
a minimum of two coats of an exterior grade acrylic, pigmented white,
with a minimum of 10 years warranty, by one of the paint companies
previously mentioned.
It is the responsibility of the specifier to identify other weather
related risks with any particular building design.
NOTe
Refer to the previously mentioned paint companies for suitable rear face
surface preparation on the ExoTec facade panels.
HardieWrap™
weather barrier
FIgURe 47 PARAPeT CAPPINg DeTAIL 1
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
21
15 MAINTeNANCe
It is the responsibility of the specifier to determine normal maintenance
requirements.
The extent and nature of maintenance will depend on the geographical
location and exposure of the building. As a guide, it is recommended that
basic normal maintenance tasks shall include but not be limited to:
n
n
n
n
n
n
In coastal areas, a six monthly washdown of expressed joints must be
done as per Clause 2.4. in the current ExoTec facade panel and fixing
system Technical Specification.
Annual checks and maintenance for the exposed sealant (3mm fillet
at horizontal joints, filled vertical and horizontal joints) referenced in
Clauses 6.2, 6.3, 6.4, 6.5, 6.6, 7.1, 9, 11.1 and 11.2, must be done
as required by the sealant manufacturer, refer to the current ExoTec
facade panel and fixing system Technical Specification.
Maintenance to painted surfaces must be carried in accordance with the
paint manufacturer’s specification, refer to section 14 in this manual.
As required, clear debris build up against ExoTec facade panels.
Maintain sealant as per manufacturer recommendations, to ensure
weather seal.
Clean out gutters, blocked pipes and overflows as required.
22
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
16 WARRANTy
design or detailing, settlement or structural movement and/or
movement of materials to which the Product is attached, incorrect
design of the structure, acts of God including but not limited to
earthquakes, cyclones, floods or other severe weather conditions
or unusual climatic conditions, efflorescence or performance of
paint/coatings applied to the Product, normal wear and tear, growth of
mould, mildew, fungi, bacteria, or any organism on any Product
surface or Product (whether on the exposed or unexposed surfaces);
exoTec® facade panel and fixing system
10 yeAR WARRANTy
january 2012
James Hardie Australia Pty Limited (“James Hardie”) warrants to the
first purchaser of ExoTec® facade panel (Product) from James Hardie
and the last purchaser of the Product prior to installation that, subject to
compliance with the Conditions of Warranty below:
- for a period of 10 years from the date of purchase, the Product
will be free from defects due to defective factory workmanship
or materials; and
- for a period of 10 years from the date of purchase, the Product will
be resistant to damage from cracking, moisture, rotting, fire and
termites to the extent set out in James Hardie’s relevant published
literature current at the time of installation; and
- for a period of 12 months from the date of purchase that the
accessories supplied by James Hardie will be free from defects due
to defective factory workmanship or materials.
For the purposes of this warranty, a “defect” in respect of the Product
means a non-compliance with AS/NZS 2908.2:2000 Cellulose-cement
products - Flat sheet.
CONDITIONS OF WARRANTy
This warranty is strictly subject to the following conditions:
(a) James Hardie will not be liable for breach of this warranty unless the
claimant provides proof of purchase of the Product and makes a
written claim to James Hardie at the address set out below, either
within 30 days after the defect would have become reasonably
apparent or, if the defect was reasonably apparent prior to installation,
then the claim must be made prior to installation.
(b) the Product is subject to natural variation in finish as part of the
manufacturing process. The builder/installer must ensure the Product
meets aesthetic requirements before installation. Subject to the terms
of this warranty, after installation of the Product, James Hardie is not
liable for claims arising from aesthetic surface variations if such
variations were, or would upon reasonable inspection have been,
apparent prior to installation;
(c) this warranty cannot be relied upon by any other person and is not
transferable;
(d) the Product must be installed and maintained strictly in accordance
with the relevant James Hardie literature current at the time of
installation and must be installed in conjunction with the components
or products specified in the literature. To obtain copies of such
literature go to or contact Ask James Hardie™ on 13 11 03.
Further, all other products, including coating and jointing systems,
applied to or used in conjunction with the Product must be
applied or installed and maintained strictly in accordance with the
relevant manufacturer’s instructions and good trade practice;
(e) the project must be designed and constructed in strict compliance
with all relevant provisions of the current Building Code of Australia,
regulations and standards;
(f)
if the claimant chooses to rely upon this warranty then the claimant’s
sole remedy under this warranty for breach of this warranty is (at
James Hardie’s option) that James Hardie will either supply
replacement Product, rectify the affected Product or pay for the cost
of the replacement or rectification of the affected Product;
(g) In the circumstances where the Australian Consumer Law does not
apply in respect of the purchase of the Product, James Hardie
will not be liable for any losses or damages (whether direct
or indirect) including property damage or personal injury,
consequential loss, economic loss or loss of profits, arising in contract
or negligence or howsoever arising. Without limiting the foregoing,
James Hardie will not be liable for any claims, damages or defects
arising from or in any way attributable to poor workmanship, poor
(h) In the circumstances where the Australian Consumer Law does not
apply in respect of the purchase of the Product, all warranties,
conditions, liabilities and obligations other than those specified in this
warranty are excluded to the fullest extent allowed by law;
(i)
If meeting a claim under this warranty involves re-coating of
Product, there may be slight colour differences between the original
and replacement Product due to the effects of weathering and
variations in materials over time and James Hardie is not liable for any
such colour differences;
(j)
In the circumstances where the Australian Consumer Law does not
apply in respect of the purchase of the Product and therefore to this
warranty, all expenses incurred as a result of claiming under this
warranty are to be borne by the claimant.
(k) In the circumstances where the Australian Consumer Law does apply
in respect of the purchase of the Product and therefore to this
warranty, if James Hardie accepts or it is determined by James Hardie
that the claimant has a valid claim under this warranty, James Hardie
will bear the claimant’s reasonable costs of claiming under this
warranty. The claimant is responsible for all other costs of claiming
under this warranty. All claims for such costs are to be notified to
James Hardie at the address outlined below within 21 days from when
the claimant first makes a claim under this warranty.
DISCLAIMeR
The recommendations in James Hardie’s literature are based on good
building practice but are not an exhaustive statement of all relevant
information and are subject to conditions (d), (e), (g) and (h) above.
Further, as the successful performance of the relevant system depends
on numerous factors outside the control of James Hardie (e.g. quality
of workmanship and design), James Hardie shall not be liable for the
recommendations in that literature and the performance of the relevant
system, including its suitability for any purpose or ability to satisfy the
relevant provisions of the Building Code of Australia, regulations and
standards.
IMPORTANT NOTe
If you acquire goods manufactured by James Hardie as a consumer
according to the Australian Consumer Law, our goods come with
guarantees that cannot be excluded under the Australian Consumer
Law. You are entitled to a replacement or refund for a major failure and
compensation for any other reasonably foreseeable loss or damage. You
are also entitled to have the goods repaired or replaced if the goods fail to
be of acceptable quality and the failure does not amount to a major failure.
Any rights a consumer may have under this warranty are in addition to other
rights and remedies of a consumer under a law in relation to the goods
to which this warranty relates. Nothing in this document shall exclude
or modify any legal rights a customer may have under the Australian
Consumer Law or otherwise which cannot be excluded or modified at law.
Contact details if you wish to make a claim under this warranty: For more
information or to make a claim under this warranty please Ask James
Hardie™ on 13 11 03, visit www.jameshardie.com.au or www.accel.com.au,
email James Hardie via our website or write to James Hardie at:
james hardie Australia Pty Ltd
10 Colquhoun Street Rosehill NSW 2142
PO Box 70 Parramatta NSW 2124
© Copyright 2012 James Hardie Australia Pty Ltd. ABN 12 084 635 558. ™ and ®
denotes a trademark or registered mark owned by James Hardie Technology Limited
EXOTEC FACADE PANEL AND FIXING SYSTEM INSTALLATION MANUAL jULy 2014
23
© Copyright 2012 James Hardie Australia Pty Ltd. ABN 12 084 635 558.
™ and ® denotes a trademark or registered mark owned by James Hardie Technology Limited
JHML112288
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