Balcony Recess and Blade Walls
Application Guide
Design Options
EasyLap
™
PANEL
June 2015 Australia
Call 13 11 03 for information and advice | jameshardie.com.au
CONTENTS
1 INTRODUCTION
1.1 Overview
1.2 Scope
2 COMPONENTS
2.1 James Hardie Accessories
3 DESIGN
3.1 Frame - General
3.2 Frame - Direct Fix
4
4
3.3 Frame - Top Hat Construction
3.4 Concrete
3.5 Additional Design Considerations
3.6 Finishing
3.7 Maintenance
4
4
4
4
5
5
3.8 Safety and Handling
3.9 Fasteners
3.10 Fire and Acoustics
3.11 Thermal Efficiency
5
5
6
6
2
2
2
3
3
4 DETAILS
4.1 Framing: General Overview
7
7
4.2 Direct Fix Construction Details 8
4.3 Top Hat Construction Details 10
IMPORTANT NOTES
1. Failure to install, finish or maintain products in accordance with applicable building codes, regulations, standards and James Hardie’s written application instructions 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 please refer to www.jameshardie.com.au and www.accel.com.au.
3. The contractor 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 you information is up to date. When specifying or installing
James Hardie
®
products, ensure you have the current manual or guide.
If in doubt or you need more information, visit www.jameshardie.com.au or Ask James Hardie
®
on 13 11 03
5. 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.
1
INTRODUCTION
1.1 OVERVIEW
It’s a smarter multi-storey balcony cladding solution that offers: n
Reduced construction times through use of shiplap joints n
No wet trades n
Multiple design options with versatile product aesthetics n
The benefits of James Hardie fibre cement DNA - resistance to damage from
fire, moisture, rot, durability with termites and impact to the extent set out in
James Hardie’s published literature at the time of installation n
Peace of mind through James Hardie’s product warranty
1.2 SCOPE
This application guide contains product information and construction details for the use of external cladding products in multi residential building balcony and blade walls up to 12 storeys in height. Construction methods for new dwellings or refurbishment include:
CONSTRUCTION SUB-TYPE WALL CONFIGURATION
Direct to Stud Wall Frame
James Hardie external cladding fixed to dry kilned timber or light gauge steel stud frame
Top Hat over Subframe
James Hardie external cladding fixed onto James
Hardie™ Intermediate Top Hats or seasoned timber battens anchored to subframe
Ultimate Limit State (ULS) wind pressures on balcony recess and blade walls have been designed up to 6.0kPa. The products covered in this application guide are the following: n
EasyLap™ panels n
Scyon™ Axon™ cladding, and n
Scyon™ Stria™ cladding
This Application guide is to be read in conjunction with the applicable
James Hardie™ installation guides and relevant codes and regulations including but not limited to the Building Codes of Australia.
Blade Wall Balcony Recess Area
2
COMPONENTS
EASYLAP™ PANELS
TABLE 1: EASYLAP
TM
PANEL SIZES
LENGTH WIDTH THICKNESS
2440mm 1200mm
3000mm 1200mm
3000mm 900mm
8.5mm
8.5mm
8.5mm
EasyLap™ Panel is a strong fibre cement base sheet with a shiplap vertical joint, it’s pre- primed ready to be finished with a site- applied roll- on textured acrylic paint to create a rendered look with a subtle vertical joint.
SCYON™ STRIA™ CLADDING
TABLE 2: SCYON
TM
STRIA
TM
CLADDING SIZES
Wide and
Standard
LENGTH WIDTH THICKNESS
4200mm 405mm 14mm
325mm
Splayed LENGTH WIDTH THICKNESS
4200mm 255mm 16mm
Scyon™ Stria™ cladding features a horizontal ship-lapped joint. Pre-primed and easy to install, Stria™ cladding is the fast way to achieve a timeless and classic look that endures.
SCYON™ AXON™ CLADDING
TABLE 3: SCYON
TM
AXON
TM
CLADDING SIZES
133 Smooth LENGTH WIDTH THICKNESS
2450mm
2750mm 1200mm 9mm
133 Grained
400 Smooth
3000mm
LENGTH WIDTH THICKNESS
2450mm
2750mm
3000mm
1200mm 9mm
LENGTH WIDTH THICKNESS
2450mm
2750mm 1200mm 9mm
3000mm
Scyon™ Axon™ Cladding is a vertically grooved panel that looks sharp and uniform. Pre-primed and easy to install, Scyon™ Axon™ cladding is a pristine look that lasts.
2.1 JAMES HARDIE ACCESSORIES
For current product accessories, refer to the relevant product installation manual. The below is not an exhaustive list of materials.
TABLE 4: JAMES HARDIE™ INTERMEDIATE TOP HAT
WIDTH DEPTH THICKNESS LENGTH WEIGHT
50mm 35mm 1.15mm
6000mm
7200mm 1.39kg/m
Note: For fixing layout of the James Hardie Intermediate top hats to sub-frame, please refer to Figure 6.
BALCONY RECESS AND BLADE WALLS APPLICATION GUIDE JUNE 2015
3
All dimensions and masses provided are approximate only and subject to manufacturing tolerances. Masses are based on equilibrium moisture content of product.
3
DESIGN
3.1 FRAME - GENERAL
3.1.1 Substructure
James Hardie external cladding products are installed to dry kilned timber, light gauge steel stud-frames or to timber battens or steel top hats. Table 5 indicates the construction method required based on the substructure used.
TABLE 5: CONSTRUCTION METHOD BASED ON SUBSTRUCTURE
SUBSTRUCTURE CONSTRUCTION METHOD
3.3 FRAME - TOP HAT CONSTRUCTION
3.3.1 Top Hat Layout
Top hats need to be installed vertically. It is the responsibility of the project engineer to determine the appropriate wind pressures for the project and specify the fixing of the top hats to the structure. The engineer must limit the deflection of the supporting structure to span/200 for Serviceability wind Load.
For maximum top hat spacing that can be achieved with the James Hardie external cladding products please refer to Table 7. These spacing values are based on Ultimate Limit State wind pressures.
Direct Fix
Light gauge steel/Timber
Top Hat Construction
Concrete
Other*
Top Hat Construction
Top Hat Construction
* A qualified structural engineer must assess and certify the substructure and the connection between the substructure and the top hats accordingly.
3.1.2 Tolerances
Ensure that the frame and top hats/battens are square and work from a central datum line. Framing must be straight and true and 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.
3.2 FRAME - DIRECT FIX
3.2.1 Stud Size Requirements
For minimum sheet joint requirements please refer to Table 6 and the respective James Hardie external cladding install guide.
TABLE 6: SHEET JOINT REQUIREMENTS
PRODUCT
PRODUCT
ORIENTATION
EasyLap™ panel
Scyon™ Axon™ cladding
Vertical
TIMBER
WIDTH
STEEL WIDTH
45mm
Double 35mm studs back to back
Scyon™ Stria™ cladding Horizontal
Refer to Scyon™ Stria™ install guide
3.3.2 Achieving a Floor to Ceiling Height of 3m for 2.1 -2.9kPa
For steel subframe and top-hat construction, the James Hardie
Intermediate Top Hats may cantilever by 200mm top and bottom. The subframe may therefore be designed and fixed into the superstructure, refer to Figure 6.
3.4 CONCRETE
When fixing to concrete, all James Hardie™ products need to be installed on James Hardie Intermediate Top Hats or suitable treated timber battens over HardieWrap
TM
weather barrier. To temporarily fix HardieWrap
TM weather barrier over concrete it is recommended to use 3M
TM
adhesive transfer tape 9472. For top hat span and fixing details see Table 7.
There are many different types of concrete and variance in the compressibility strengths. The details provided in Table 7 for James
Hardie Intermediate Top Hats fixed to a concrete substrate assume a minimum concrete strength of 25MPa. Fixing details are based on the
Hilti DX-Kwik fastener system used with the X-CR_P8 44mm nail when fixing James Hardie Intermediate Top Hats to solid concrete of 25MPa or greater. Alternate fixing designs outside this scope requires 3rd party engineering design and certification.
Do not bridge structural movement joints. These must be carried through to the external cladding. A control joint will need to be created in the James Hardie external cladding and James Hardie
Intermediate Top Hats.
For warranty and fixing details or further information on concrete anchoring please contact: n
Hilti Australia – 131 292
3.5 ADDDITIONAL DESIGN CONSIDERATIONS
3.5.1 Ground Clearance
Install James Hardie external cladding with a minimum 30mm clearance to the balcony deck. Maintain a slope away from the building in accordance with the local building codes, typically a minimum 50mm slope over the first metre. Maintain a minimum 50mm clearance to paths, steps and driveways.
3.2.2 Timber Frame
Use of timber frame must be in accordance with AS1684 – ‘Residential timber-framed construction’ and the framing manufacturers specifications.
Use only seasoned timber. ‘Timber used for house construction must have the level of durability appropriate for the relevant climate and expected service life and conditions including exposure to insect attacks or to moisture, which could cause decay.’ Reference AS1684.2
Do not install external cladding such that it may remain in contact with standing water.
3.2.3 Steel Frame
Use of steel framing must be in accordance with NASH standard for residential and Low-Rise Steel Framing Part 1: Design Criteria and the framing manufacturer’s specifications. Framing members must have a base metal thickness (BMT) between 0.55 to 1.6mm. The steel must have the appropriate level of durability required to prevent corrosion.
3.2.3.1 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 value of 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 HardieBreak TM thermal strip. Refer to the
HardieBreak
TM
thermal strip installation guide for more information.
NOTE: HardieBreak
TM
thermal strip is not required on blade wall construction.
3.5.2 HardieWrap™ Weather Barrier
HardieWrap™ weather barrier must be installed under James Hardie™ external cladding 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
Vapour barrier - low or mediumn n
Water barrier - high
4
BALCONY RECESS AND BLADE WALLS APPLICATION GUIDE JUNE 2015
All dimensions and masses provided are approximate only and subject to manufacturing tolerances. Masses are based on equilibrium moisture content of product.
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 for more information.
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.
3.8 SAFETY AND HANDLING
For information refer to the respective products installation guide or data sheet and MSDS at www.jameshardie.com.au or www.accel.
com.au; and the safe workplace government authority in your state.
3.5.3 Flashing
All wall openings, penetrations, intersections, connections, window sills, heads and jambs must be flashed prior to cladding installation.
3.9 FASTENERS
3.9.1 Stud/Top Hat and Panel Fastener Spacing for ULS Pressures
When fixing top hats to subframe, 2 fasteners need to be applied at each fixing centre with 1 on each side of the top hat flange, refer to Figure 6.
3.5.4 Penetrations
Any penetration through James Hardie external cladding needs to be fixed back to the frame and must be properly flashed and sealed to manage any possible moisture ingress to the facade.
TABLE 7: STUD AND FASTENER SPACING FOR
ULTIMATE LIMIT STATE WIND PRESSURES
ULS
DESIGN
PRESSURE
(KPA)
MAXIMUM
STUD / TOP
HAT / BATTEN
SPACING
MAXIMUM
FASTENER
SPACING
JAMES HARDIE
INTERMEDIATE TOP HAT
FIXED OR SUITABLE
BATTEN* FIXED TO
SUB-STRUCUTURE
3.6 FINISHING
3.6.1 Sealant
Application and use of sealants must comply with manufacturer’s instructions. Sealants, if coated, must be compatible with the paint system. James Hardie recommends the use of James Hardie™ joint sealant, which is a paintable polyurethane sealant.
3.6.2 Painting
Refer to the project specification for paint requirements. EasyLap™ panels,
Scyon™ Stria™ and Axon™ cladding must be painted within 3 months of being fixed. James Hardie recommends the application of two coats minimum of a quality exterior acrylic paint over the pre-primed boards in accordance with the paint manufacturer’s specifications. Paint finishes for each product are the following:
EasyLap™ Panel / Scyon™ Axon™ cladding Maximum Fixing Centres.
0 – 2.0
2.1 – 2.9
600mm
450mm
3.0 – 6.0
300mm 125mm
Scyon™ Stria™ cladding
0 – 2.0
600mm
200mm
150mm
2.1 – 2.9
3.0 – 6.0
450mm
300mm
* Designed by others.
Refer to Figure
1 & 2 for fixing details
ULS Design Pressures up to 2.9kPa
1500mm max. span
1300mm max. span
950mm max. span
Maximum Fixing Centres.
1500mm max. span
1300mm max. span
950mm max. span
ULS Design Pressures
3.0 kPa to 6.0kPa
n n
EasyLap™ panels must be finished with suitable roll-on acrylic texture
paint. Refer to EasyLap™ panel install guide for specifications.
For Scyon™ Stria™ and Axon™ cladding refer to the project
specification and James Hardie install guides for recommendations.
Some environments require special coatings. Painting selection and specifications are dependent on the paint chosen. Refer to the paint manufacturer for information and details of their warranty.
Refer to
Table 8 for suitable fastener
15mm
Scyon™ Stria™ standard and splayed cladding
Refer to
Table 8 for suitable fastener
3.6.3 Painting in Coastal Areas
In areas within 1km of a coastal area or corrosive environment, James
Hardie external cladding must be painted immediately after fixing sheets to minimise contamination build up on the heads of the fasteners, as it may lead to fastener corrosion.
50mm
3.7 MAINTENANCE
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
Washing down exterior surfaces every 6-12 months* n
Periodic inspections should be made to ensure fasteners are
adequately securing the sheets to framing. n
Re-applying of exterior protective finishes* n
Maintaining the exterior envelope and connections including joints,
penetrations, flashing and sealants that may provide a means of
moisture entry beyond the exterior cladding. n
Cleaning out gutters, blocked piped and overflows as required.
n
Pruning back vegetation that is close to or touching the building.
*Refer to your paint manufacturer for washing down and re-coating requirements related to paint performance.
FIGURE 1 FIXING DETAILS FOR SCYON
TM
STRIA
TM
STANDARD
AND SPLAYED PROFILE
ULS Design Pressures up to 2.9kPa
Concealed fastener refer to Table 8 for suitable fastener
Refer to
Table 8 for suitable fastener
20mm
15mm
Scyon™ Stria™ wide cladding
50mm
ULS Design Pressures
3.0 kPa to 6.0kPa
Refer to
Table 8 for suitable fastener
BALCONY RECESS AND BLADE WALLS APPLICATION GUIDE JUNE 2015
5
FIGURE 2 FIXING DETAILS FOR SCYON TM STRIA TM WIDE PROFILE
All dimensions and masses provided are approximate only and subject to manufacturing tolerances. Masses are based on equilibrium moisture content of product.
3.9.2 Suitable Fasteners
Fasteners must have the appropriate level of durability required for the intended project. This is of particular importance in coastal regions, areas subject to salt spray and other corrosive environments. Fasteners must be fully compatible with all other materials that they are in contact with to ensure the durability and integrity of the assembly. Contact fastener manufacturers for more information.
TABLE 8: SUITABLE FASTENERS FOR FIXING JAMES HARDIE CLADDING AND TOP HATS TO SUB-STRUCTURE
PRODUCT
TIMBER
SUB- STRUICTURE
LIGHT-GAUGE STEEL
0.55-0.75mm 0.8-1.6mm
JAMES HARDIE
INTERMEDIATE
TOP HAT
SOLID CONCRETE (>25MPA)
EasyLap™ panel
Scyon™ Axon™ cladding
2.8 x 40mm minimum class 3 corrosion resistant fibre cement nail
Scyon™ Stria™ cladding
Face-Fix: 2.8 x 50mm minimum class 3 corrosion resistant fibre cement gun nail
Concealed-Fix: 2.8 x 40mm minimum class 3 corrosion resistant fibre cement hand nail
Buildex
FibreTEKS
® screw 40mm long
HardieDrive
TM screw 40mm long
HardieDrive™ screw 40mm long
Note: James Hardie external cladding cannot be fixed directly to concrete.
Refer to JH Intermediate Top Hat fixing details below.
James Hardie
Intermediate Top Hat
M5.5 x 40mm Buildex class 3 Batten Zips®*
Hilti DX-Kwik fastener system used with X-CR_
P8 44mm nail into pre-drilled holes
* M5.5x40mm Buildex class 3 Batten Zips ® are only suitable for fixing into light-gauge steel frames up to 1.2mm BMT.
3.10 FIRE AND ACOUSTICS
The information provided in Table 9 is a summary for steel frames only and needs to be read in conjunction with the latest James Hardie™ Fire and acoustically rated walls Application Guide and Technical Specification. For timber frames refer to the latest James Hardie™ Fire and acoustically rated walls Application Guide and Technical Specification.
TABLE 9: FIRE RATED, LOADBEARING WALL SYSTEM – STEEL FRAME
FRAMING
ARRANGEMENT
JAMES
HARDIE
SYSTEM
#
414IE
415IE
WALL COMPONENTS
INTERNAL
• 6mm Villaboard lining (min)
• 13mm Fire resistant PB
• 6mm Villaboard lining (min)
• 16mm Fire resistant PB
EXTERNAL
• 6mm External cladding (min)
• HardieWrap™ weather barrier
• 13mm Fire and
Water resistant PB
• 6mm External cladding (min)
• HardieWrap™ weather barrier
• 16mm Fire and
Water resistant PB
FRL
60/60/60
90/90/90
SUITABLE
PRODUCT
EasyLap/Axon
Stria
Stria Splayed
EasyLap/Axon
Stria
Stria Splayed
WALL
THICKNESS
(MM)
130
135
137
136
141
143
ACOUSTIC PERFORMANCE
NO INSULATION INSULATION
Rw Rw + Ctr Rw Rw + Ctr
48 40 57 49
48
48
48
49
49
40
41
41
41
42
57
57
57
57
57
50
50
51
51
52
416IE
• 9mm Villaboard lining (min)
• 16mm Fire resistant PB
• 9mm External cladding (min)
• HardieWrap™ weather barrier
• 16mm Fire and
Water resistant PB
120/120/120
Axon
Stria
142
147
50
50
42
42
58
58
52
52
Stria Splayed 149 51 43 58 53
To achieve the acoustic values presented in this design guide, use either fibreglass or polyester insulation. The minimum thickness and density should be 50mm and 14kg/m3 respectfully with insulation. The insulation should be an acoustic grade fibreglass or polyester, unless otherwise stated and satisfy the BCA and AS/NZS 4859.1. The acoustic values represented in Table 9 are predictions produced by INSUL software. Comparisons with test data show that it is generally within 3 STC points for most constructions.
3.11 THERMAL EFFICIENCY
The total R-value depends on installation and environmental conditions. Figures 3 and 4 provide total R-values for common systems in accordance with AS4859.1:2006 Materials for Thermal Insulation of Buildings. Note that the R-value will be reduced in cavities that are ventilated. For more information on R-values please refer to James Hardie R-value supplement.
FIGURE 3 WINTER R
T
3.1 - SUMMER R
T
3.1
FIGURE 4 WINTER R
T
3.3 - SUMMER R
T
3.3
6
BALCONY RECESS AND BLADE WALLS APPLICATION GUIDE JUNE 2015
All dimensions and masses provided are approximate only and subject to manufacturing tolerances. Masses are based on equilibrium moisture content of product.
4
DETAILS
4.1 FRAMING: GENERAL OVERVIEW
Concrete Slab
Steel Subframe design by qualified strucutral engineer
HardieWrap™ weather barrier
HardieBreak™ thermal strip
Suitable James Hardie
External cladding
(see Components)
Cantilever Balcony
Concrete Slab
Existing
Concrete
Substructure
HardieWrap™ weather barrier
James Hardie™
Intermediate Top Hats
Suitable James Hardie
External cladding
(see Components)
Cantilever Balcony
Concrete Slab
Concrete Slab
FIGURE 5 JAMES HARDIE CLADDING OVER LIGHT GAUGE STEEL FIGURE 7 JAMES HARDIE CLADDING OVER CONCRETE
FIGURE 6 TOP HAT FIXING LAYOUT TO
TIMBER / STEEL-WORK SUBFRAME
FIGURE 8 TOP HAT FIXING LAYOUT OVER CONCRETE
BALCONY RECESS AND BLADE WALLS APPLICATION GUIDE JUNE 2015
7
All dimensions and masses provided are approximate only and subject to manufacturing tolerances. Masses are based on equilibrium moisture content of product.
4.2 DIRECT FIX CONSTRUCTION DETAILS
FIGURE 9 EXTERNAL CLADDING FIXED DIRECT TO FRAME FIGURE 11 DEFLECTION HEAD
FIGURE 10 BASE DETAIL
FIGURE 12 PARAPET CAPPING
8
BALCONY RECESS AND BLADE WALLS APPLICATION GUIDE JUNE 2015
All dimensions and masses provided are approximate only and subject to manufacturing tolerances. Masses are based on equilibrium moisture content of product.
FIGURE 13 INTERNAL CORNER
FIGURE 14 EXTERNAL CORNER
FIGURE 16 WINDOW HEAD AND SILL
FIGURE 15 WINDOW JAM
BALCONY RECESS AND BLADE WALLS APPLICATION GUIDE JUNE 2015
9
All dimensions and masses provided are approximate only and subject to manufacturing tolerances. Masses are based on equilibrium moisture content of product.
4.3 TOP HAT CONSTRUCTION DETAILS
FIGURE 17 EXTERNAL CLADDING FIXED TO TOP HATS
FIGURE 19 DEFLECTION HEAD OVER TOP HATS
FIGURE 18 BASE DETAIL OVER TOP HATS FIGURE 20 PARAPET CAPPING OVER TOP HATS
10
BALCONY RECESS AND BLADE WALLS APPLICATION GUIDE JUNE 2015
All dimensions and masses provided are approximate only and subject to manufacturing tolerances. Masses are based on equilibrium moisture content of product.
FIGURE 21 INTERNAL CORNER OVER TOP HATS FIGURE 23 WINDOW JAM OVER TOP HATS
FIGURE 22 EXTERNAL CORNER OVER TOP HATS
FIGURE 24 WINDOW HEAD AND SILL OVER TOP HATS
BALCONY RECESS AND BLADE WALLS APPLICATION GUIDE JUNE 2015
11
All dimensions and masses provided are approximate only and subject to manufacturing tolerances. Masses are based on equilibrium moisture content of product.
Call 13 11 03 for information and advice | jameshardie.com.au
© 2015 James Hardie Australia Pty Ltd. ABN 12 084 635 558. ™ and ® denotes a trademark or registered mark owned by James Hardie Technology Limited
© 2014 James Hardie Australia Pty Ltd ABN 12 084 635 558. ™ and ®
Additional installation information, warranties & warnings are available at www.jameshardie.com.au and www.accel.com.au
