Global leaders in wall and floor building products | James Hardie
Global leaders in wall and floor building products | James Hardie
Installation Guide for JamesHardie models including: ExoTec Facade Panel Fixing System, ExoTec, Facade Panel Fixing System, Panel Fixing System, Fixing System, System
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DocumentDocumentInstallation Guide ExoTecTM Facade Panel COMMERCIAL Australia May 2024 Make sure your information is up to date. When specifying or installing HardieTM products, ensure that you have the current technical information and guides. If in doubt, or you need more information, visit www.jameshardie.com.au or Ask James HardieTM on 13 11 03. Certificate CM40221 CONTENTS 1 INTRODUCTION 2 2 SAFE WORKING PRACTICES 3 Warning 3 Recommended safe working practices 3 Working instructions 3 Hole-forming 3 Storage and handling 3 Quality 3 3 PRODUCT INFORMATION 4 ExoTecTM Facade Panel Information 4 Accessories/tools supplied by James Hardie 4 Accessories/tools not supplied by James Hardie 4 4 DESIGN CONSIDERATIONS 5 Compliance 5 Slab and Footings 5 Ground Clearances 5 Moisture Management 5 Top Hat Framing 5 Sealant Filled Joints 5 Curved Facades 5 Movement Joints 6 5 PREPARATION 7 Substructure 7 Weather Barrier 7 Flashing 7 Thermal Break 7 6 PANEL AND TOP HAT LAYOUT 8 7 INSTALLATION 9 Top hat 9 Panel Installation 11 Fastening methods - countersunk 11 Fastening methods - exposed 11 Backing strip installation 13 JOINTS AND JUNCTIONS 14 Joints 14 Base slab 16 Head slab 17 Soffit junction 17 Wall 18 EXTERNAL CORNERS 19 INTERNAL CORNERS 20 WINDOWS 21 PARAPET DETAILS 24 8 FINISHING 24 General 24 Panels exposed to direct sunlight 24 9 MAINTENANCE 25 MADE IN AUSTRALIA 1 Introduction ExoTecTM Facade panel provides a durable, expressed joint panel appearance for building facades and fascias and, together with the ExoTecTM 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 to the ExoTecTM Facade Panel including site-applied acrylic textures and available factory-applied polyurethane plain colours and metallic finishes. Refer to Section 8 Finishes for more information. 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 ExoTecTM Facade Panel. The 9mm thick ExoTecTM Facade Panels may be used in wall facades, fascias and soffits. If you are an installer... Ensure that you follow the design, moisture management and associated details and material selection provided by the designer. 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. 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 Safe Working Practices WARNING - DO NOT BREATHE DUST AND CUT ONLY IN WELL VENTILATED AREA Fibre cement products manufactured by James Hardie contain sand, a source of respirable crystalline silica. May cause cancer if dust from product is inhaled. Causes damage to lungs and respiratory system through prolonged or repeated inhalation of dust from product. Intact fibre cement products are not expected to result in any adverse toxic effects. The hazard associated with fibre cement arises from the respirable crystalline silica present in dust generated by activities such as cutting, rebating, drilling, routing, sawing, crushing, or otherwise abrading fibre cement, and when cleaning up, disposing of or moving dust. When doing any of these activities in a manner that generates dust, follow HardieTM instructions and best practices to reduce or limit the release of dust, warn others in the area and consider rotating personnel across the cutting task to further limit respirable silica exposure. If using a dust mask or respirator, use an AS/NZS1716 P1 filter and refer to Australian/New Zealand Standard 1715:2009 Selection, Use and Maintenance of Respiratory Protective Equipment for more extensive guidance and more options for selecting respirators for workplaces. For further information, refer to our installation instructions and Safety Data Sheets available at www.jameshardie.com.au. FAILURE TO ADHERE TO OUR WARNINGS, 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. Warn others in the area to avoid dust. 3. Consider rotating personnel across cutting tasks to further limit respirable silica exposures. 4. Use one of the following methods based on the required cutting rate: Best VillaboardTM knife Hand guillotine Fibreshear Better Position the cutting station in a well-ventilated area. Use a dust reducing circular saw equipped with HardieTM Blade Saw Blade or comparable fibre cement blade and well maintained M-class vacuum or higher with appropriate filter for capturing fine (respirable) dust. Wear a properly-fitted, approved dust mask or respirator (minimum P1). WORKING INSTRUCTIONS Refer to recommended safe working practices before starting any cutting or machining of product. HardieTM Blade Saw Blade The HardieTM Blade Saw Blade used with a dust-reducing saw is ideal for fast, clean cutting of HardieTM 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: 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. 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. CUTTING INDOORS Cut only using VillaboardTM knife, hand guillotine or fibreshears (manual, electric or pneumatic). Position cutting station in a well-ventilated area. DRILLING/OTHER MACHINING When drilling or machining you should always wear a P1 dust mask and warn others in the immediate area. IMPORTANT NOTES 1. For maximum protection (lowest respirable dust production) James Hardie recommends always using best practice cutting methods where feasible. 2. NEVER use a power saw indoors or in a poorly ventilated area. 3. ALWAYS use a dust reducing circular saw equipped with a sawblade specifically designed to minimise dust creation when cutting fibrecement preferably a sawblade that carries the HardieTM Blade logo or one with at least equivalent performance - connected to a M class or higher vacuum. 4. NEVER dry sweep - Use wet suppression, or an M class vacuum or higher with appropriate filter. 5. NEVER use grinders. 6. ALWAYS follow tool manufacturers' safety recommendations. 7. ALWAYS wear a properly fitted, approved dusk mask, P1 or higher DUST MASKS AND RESPIRATORS As a minimum, an AS/NZS1716 P1 respirator must be used when doing any activity that may create dust. For more extensive guidance and options for selecting respirators for workplaces please refer to Australian/ New Zealand Standard 1715:2009 "Selection, Use and Maintenance of Respiratory Protective Equipment". P1 respirators should be used in conjunction with the above cutting practices to minimise dust exposure. For further information, refer to Safety Data Sheet (SDS) available at www.jameshardie.com.au. 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 HardieTM building products should be stored with edges and corners of the sheets protected from chipping. HardieTM 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. 3 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE 3 Product Information ExotecTM Facade Panel Information PRODUCT DESCRIPTION ExoTecTM 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 QUANTITY / SIZE (NOMINAL) Thickness Width 9mm 1200mm Lengths 2400, 3000 NOTE: Not all combinations of thicknesses, width and length are available ex stock, but are available to order. Check with James Hardie for availability of panel sizes. Accessories / Tools Supplied by James Hardie ACCESSORIES DESCRIPTION ExoTecTM Top Hat A rolled metal section, for use with ExoTecTM 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 0.75mm gauge thick. (Approximately) HardieTM Intermediate Top Hat A metal top hat installed vertically for use with ExoTecTM Facade Panel and fixing system, for intermediate sheet support. 50mm wide face x 35mm deep x 0.75mm gauge thick.(Approximately) ExoTecTM Gasket Snap Strip. 3,620mm long For use with the ExoTecTM Facade Panel and fixing system, this gasket snap strip is specially designed to clip into the ExoTecTM Top Hat at vertical facade panel joins to cover fixings to the structure and to provide an initial weather seal and drainage using a neoprene gasket. HardieTM Backing Strip.1,190mm, 2390mm, 2990mm A weather seal at horizontal panel joints for use with ExoTecTM Facade Panel and fixing system and MatrixTM Cladding. HardieTM Facade Washers Facade washers used for exposed fastener fixing with ExoTecTM Facade Panel and fixing system and MatrixTM cladding. HardieTM Base Coat. 4kg tub, 15kg bag A water-resistant base coat compound used to finish over countersunk fasteners with epoxy. HardieTM Joint Sealant, 300mL cartridge A general purpose, paintable, exterior grade polyurethane joint sealant. RABTM Board RAB is an all-in-one airtight, weatherproof, vapour permeable and non-combustible rigid 6mm fibre-cement sheathing for residential or commercial applications where the structural design require strong/stiffer shear walls. HardieTM Wrap Weather Barrier A non-perforated, highly breathable and reflective safe-glare weather barrier designed to be used behind ExoTecTM Facade Panel and fixing system to help protect the building. Unit size 2750mm x 30000mm. HardieTM Edge Trim An architectural slab edge solution fabricated from high-quality powder coated aluminium. Base Trim Unit size: 3950mm. 4 per pack. See right for all HardieTM Edge components: TOOLS DESCRIPTION HardieTM Blade Saw Blade. 185mm diameter A 185mm diameter poly-diamond blade for fast and clean cutting of HardieTM fibre cement. QUANTITY/SIZE (APPROX) 45 per pack 6,000mm (305948) 7,200mm (305947) 50 per pack 6,000mm (305950) 7,200mm (305949) 10 per pack (305556) 10 per pack 1,190mm (305557) 2,390mm (305558) 2,990mm (305559) 1000 per bag (305565) 4 per box - 4kg, 1 each - 15kg 4kg tub (305535) 15kg bag (305591) 20 per box (305534) 40 per pack 1200mm x 2450mm (402980) 1200mm x 2750mm (405131) 1200mm x 3000mm (402981) 1 each (305664) Base Trim 4 per pack. (305911) Base Trim Jointer 12 per pack. (305912) Internal Corner 12 per pack. (305913) External Corner 12 per pack. (305914) QUANTITY/SIZE (APPROX) 1 Each (300660) Accessories / Tools Not Supplied by James Hardie James Hardie recommends the following products for use in conjunction with ExoTecTM Facade System. 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. ACCESSORIES DESCRIPTION Miscellaneous light gauge pressed metal section Sections 1mm minimum to 1.2mm maximum corrosion resistant metal. Used in internal and external corner details. ACCESSORIES DESCRIPTION Flashing tape A flexible self-adhesive tape used in preparation of a window. Refer to the window installation section in this Guide for more information. Bond breaker tape Used when filling vertical joints to prevent sealant from bonding to top hat. Base coat applicator A recommended method of applying HardieTM Base Coat over epoxy filled countersunk screw heads. This method minimises waste. Base coat is easily sanded by comparison to epoxy fillers. 6mm masonry drill Provides a 6.2mm to 6.3mm diameter hole. Used to pre-drill clearance holes for fasteners. Epoxy flush sealing (2 part) Countersunk head screws are flush sealed using Megapoxy P1. Ardex RA 88, Dunlop Builder's Bond between sheets (0.5mm-1mm gap) Countersunk head drill 6mm countersunk bit. FASTENERS DESCRIPTION Countersunk fasteners No. 10x30 countersunk head self drilling screws - Class 3 minimum coating. FASTENERS DESCRIPTION Exposed head fasteners No. 10x25mm pan, wafer or hex head self drilling screws Class 3 Minimum coating. 4 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE 4 Design Considerations 4.1 COMPLIANCE All design and construction must comply with the appropriate requirements of the current Building Code of Australia (BCA), regulations and standards. 4.2 SLAB AND FOOTINGS The slab and footings on which the building is situated must be designed and certified by a qualified structural engineer according to all relevant codes, regulations and standards. 4.3 GROUND CLEARANCES Install HardieTM external cladding with a minimum 150mm clearance to the earth on the exterior of the building or in accordance with local building codes if greater than 150mm is required. Also, maintain a minimum 50mm clearance between HardieTM external cladding and roofs, decks, paths, steps and driveways. Adjacent finished grade must slope away from the building in accordance with local building codes, typically a minimum slope of 50mm minimum over the first metre. Do not install external cladding in areas where it may remain in contact with standing water or debris. The nominal spacing between top hats is 605mm for a 1200mm wide panel and 455mm for a 900mm wide panel, i.e. top hats are required at panel edges and at intermediate spacings within the panels. The ExoTecTM Top Hats at panel edges have the legs facing out from the structure and at intermediate locations the HardieTM Intermediate Top Hat is used, with the legs fixed to the structure, see Figure 2. The maximum spans and nominal spacings of ExoTecTM Top Hats and HardieTM Intermediate Top Hats for wall and soffit applications are provided in Tables 2 and 3 respectively, see page 6. For wall applications, the maximum cantilever distance of the top hats is one quarter of the single span shown in Table 2. 4.6 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. Where joints are required to be sealant filled, HardieTM Joint Sealant and Bostik Seal `n' flex are recommended. Where vertical joints are sealed, a bond breaker tape must be installed behind the sealant. 4.7 CURVED FACADES The ExoTecTM Facade Panel and fixing system can be used to follow curved walls as described below: 4.4 MOISTURE MANAGEMENT The ExoTecTM Facade Panel and fixing system acts as a weather shield. To achieve a particular level of weathertightness, the designer must determine the appropriate moisture management detailing for the project. The designer should consider the following matters when making that determination: It is the responsibility of the builders and designers to identify moisture related risks associated with any particular building design. It is the responsibility of the builder to ensure appropriate moisture management is provided during framed wall construction through effective use of flashings, sealants and vapour permeable membranes such as HardieTM Wrap Weather Barrier, building wraps, vapour retarders and damp proof course. Before installing panels, all wall openings, penetrations, intersections, connections, window sills, heads and jambs must incorporate appropriate flashing and waterproofing. Materials, components and the installation practices that are used to manage moisture in framed wall construction must, at a minimum, comply with the requirements of relevant standards, building codes and the manufacturer's specifications. Sealant at sheet joints must be installed where detailed in this literature. For wind pressures up to 4.0kPa, see Figures 19, 20, 21, 22. For pressures including and above 4.0kPa, both vertical and horizontal joints must be sealant filled, see Figure 24. Where sealant is exposed, refer to the sealant manufacturer for durability information. For high walls it may be necessary to provide flashing to drain the facade at one or more intermediate levels. The installation of smoke, vermin and other barriers must not restrict moisture from reaching flashings. For information on membrane refer to clause 5.2 of this guide 4.5 TOP HAT FRAMING ExoTecTM Facade Panels must be fixed to ExoTecTM Top Hat and HardieTM Intermediate Top Hat sections which are installed vertically over steel, masonry or timber structures, See Figure 1. ExoTecTM Top Hat and intermediate JH top hat sections must not be installed horizontally. Ensure a planar fixing surface for ExoTecTM Facade Panels. The structure can either be straightened or packed out between the substructure and top hats. Packing out of top hats must be limited to 20mm maximum. For radii 10m or greater ExoTecTM Facade Panels can be easily bent to the curve of the frame. ExoTecTM Facade Panels are to be fixed in a horizontal orientation only. Refer to Table 1 for maximum top hat spacing. TABLE 1 Max. Top Hat Spacing for Various Radii RADII (m) MAX. TOP HAT SPACING (mm) 1200mm wide panels 10 to 15 400 >15 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 James Hardie on 13 11 03. 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/250 for Serviceability Wind Load. 5 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE TABLE 2 - WALLS Walls - Maximum ExotecTM Top Hat and HardieTM Intermediate Top Hat Spans (mm) for Ultimate Design Wind Pressures SPAN TYPE Single Span NOMINAL TOP HAT SPACING (mm) 1 300 2413 450 2107 600 1914 1.5 2108 1841 1672 2 1915 1673 1520 2.5 1778 1553 1411 ULTIMATE DESIGN WIND PRESSURE (kPa) 3 1673 1461 1328 3.5 1589 1388 1261 4 1520 1328 1206 4.5 1461 1277 1160 5 1411 1233 1101 5.5 1367 1194 1050 6 1328 1160 1005 6.5 1293 1115 965 2 Span Continuous 300 450 600 3234 2825 2408 2825 2245 1885 2408 1885 1574 2106 1639 1364 1885 1459 1210 1711 1321 1091 1574 1210 997 1459 1119 919 1364 1042 854 1281 976 787 1210 919 721 1147 869 666 3 Span Continuous 300 450 600 2981 2605 2366 2605 2275 2042 2366 2042 1706 2197 1777 1479 2042 1582 1312 1855 1432 1184 1706 1312 1082 1582 1213 998 1479 1130 927 1390 1059 861 1312 998 789 1244 944 728 7 1261 1075 923 1091 825 619 1184 897 676 TABLE 3 - SOFFITS Soffits - Maximum ExotecTM Top Hat and HardieTM Intermediate Top Hat Spans (mm) for Ultimate Design Wind Pressures SPAN TYPE Single Span NOMINAL TOP HAT SPACING (mm) 1 300 2311 450 2020 600 1835 1.5 2047 1789 1625 2 1873 1637 1487 2.5 1746 1526 1386 ULTIMATE DESIGN WIND PRESSURE (kPa) 3 1648 1440 1308 3.5 1569 1371 1245 4 1503 1313 1193 4.5 1447 1264 1143 5 1398 1221 1086 5.5 1356 1184 1037 6 1318 1148 994 6.5 1284 1104 956 2 Span Continuous 300 450 600 3099 2649 2231 2713 2130 1785 2316 1808 1508 2038 1585 1317 1832 1418 1174 1671 1288 1063 1540 1183 974 1431 1096 900 1339 1023 838 1260 960 768 1192 905 706 1131 857 653 3 Span Continuous 300 450 600 2856 2496 2268 2530 2210 1934 2315 1960 1636 2158 1718 1428 1986 1538 1274 1811 1397 1154 1670 1283 1057 1552 1189 977 1453 1110 910 1367 1042 840 1293 983 772 1227 931 714 7 1253 1064 906 1077 809 607 1168 884 664 4.8 MOVEMENT JOINTS 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. Vertical structural joints may be required in the cladding to coincide with structural joints in the structure to accommodate the anticipated movement. Horizontal structural joints are required at slab level where the framing supporting the top hats moves with the creep deflection in the slab. NOTE The project engineer is responsible for specifying the anticipated movement. 6 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE 5 PREPARATION Install RABTM Board, HardieTM Wrap Weather Barrier or appropriate membrane in accordance with AS/NZS 4200.2 Prior to installation of the ExoTecTM Facade Panel and fixing system ensure that the required preparation steps have been followed. NOTE: The use of RABTM Board, HardieTM Wrap Weather Barrier or suitable membrane is mandatory. FIGURE 1 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. 2. The engineer must limit the deflection of the supporting structure to span/250 for serviceability Wind Load. 5.1 SUBSTRUCTURE The ExoTecTM Top Hat and HardieTM Intermediate Top Hat sections are installed vertically over steel girts, masonry, concrete walling and in residential applications over timber or steel framing. In a residential application, noggings between studs can be used as intermediate support for ExoTecTM Top Hat and HardieTM Intermediate Top Hat sections. A qualified structural engineer must design the substructure and the connection between the substructure and the top hats. 5.2 WEATHER BARRIER A suitable water control membrane must be installed under HardieTM cladding in accordance with the AS/NZS 4200.2 `Pliable building membranes and underlays Installation' and NCC requirements or other relevant and appropriate standards. James Hardie has tested and certified the use of HardieTM Wrap Weather Barrier or RABTM Board for climate zones 2-8 within Australia. HardieTM Wrap Weather Barrier is a Class 4 vapour permeable membrane that delivers a triple-shield of protection to help against external weather penetration, internal condensation management and external heat penetration through its safe-glare reflective layer. RABTM Board is classified as a Vapour Permeable (Class 4) when assessed using Vapour Permeable classification of AS/NZS 4200.1 based on testing in accordance with ASTM E96 and appraisal from BRANZ. HardieTM Wrap Weather Barrier is suitable for use as a component of noncombustible walls and in bushfire prone areas as it has a "Low" Flammability Index in accordance with AS 1530.2 and is under 1mm in thickness. TABLE 4 Weather Barrier Classification Climate Zones Water Barrier Class (NCC) (AS/NZS 4200) 2-8 High Water Barrier 1 Vapour Permeance Class (AS/NZS 4200.1) Vapour permeable (Class 3 or 4) Vapour Barrier (Class 1 or 2) 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. 5.3 FLASHING All wall openings, penetrations, intersections, connections, window sills, heads and jambs must be flashed prior to top hat and sheet installation. Refer to Clause 5.2 for moisture management requirements. 5.4 THERMAL BREAK The NCC 2022 sections J3D6 and H6D2 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 metal frame. The ExoTecTM Facade Panel installed with the ExoTecTM Fixing System in accordance with this installation guide does not require a thermal break as the panel is attached to the outside face of the `Metal-Framed SingleStud' wall and not directly connected to the metal framing member that supports the interior wall lining. If using an alternate product in lieu of HardieTM Wrap Weather Barrier or RABTM Board or the project is located in a hot humid area (Climate Zone 1), the designer must ensure that the product is fit for purpose and it has the following classification in accordance with AS/NZS 4200.1:2017 `Pliable building membranes and underlays Materials': Please refer to letter of opinion from Cameron Chick of Acronem Consulting to verify this solution meets the minimum NCC requirements. Please ensure the proposed application complies with the NCC, standards and thermal performance opinion. 6 Panel and Top Hat Layout The ExoTecTM Facade Panels can be installed upright horizontally or vertically. The panel layout will determine the location of the ExoTecTM Top Hats and HardieTM Intermediate Top Hats, see Figures 2 to 5. The vertical expressed joints may be aligned or offset in a brick pattern layout. KEY TH: ExoTecTM Top Hat INT: HardieTM Intermediate Top Hat TH INT TH INT TH INT TH INT TH INT TH TH INT INT INT TH INT INT INT TH FIGURE 2 VERTICAL LAYOUT ALIGNED GRID PATTERN FIGURE 4 HORIZONTAL LAYOUT ALIGNED GRID PATTERN TH INT TH INT TH INT TH INT TH TH INT TH INT TH INT TH INT TH INT TH FIGURE 3 HORIZONTAL LAYOUT BRICK GRID PATTERN 8 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE FIGURE 5 VERTICAL LAYOUT BRICK GRID PATTERN 7 Installation 7.1 TOP HAT INSTALLATION ExoTecTM Facade Panels must be fixed to: 1) ExoTecTM Top Hat for vertical sheet joints. 2) HardieTM Intermediate Top Hat for supporting the panels between vertical sheet joints. STEP 1 Ensure a straight subframe for fixing of top hats and the ExoTecTM Facade Panels. Where required, provide suitable packing between the substructure ans the top hats limited to 20mm. This must be approved by the site engineer. STEP 2 For top hat span and spacing refer to the project specific specification. STEP 3 Fix the ExoTecTM Top Hats and HardieTM Intermediate Top Hats vertically to the substructure according to structural engineer specifications. STEP 4 Fix the ExoTecTM Gasket Strip into all ExoTecTM Top Hats by starting at one end and pushing into the ExoTecTM Top Hats along it's length. Ends of the snap strip are butted together in the top hats without any need for sealant. ExoTecTM Top Hat EHatxaoptsTaenacereTMl eredTqgouepisre. d HardieTM Top Hats spacings Iwanttiteihnritmneretmhdeieadpteiaanteels. FIGURE 6 TOP HAT INSTALLATION HBaarrrdieierTMor WRAraBpTMWBeaotahredr ExoTecTM Top Hat HardieTM Intermediate Top Hat HardieTM Wrap Weather Barrier or RABTM Board ExoTecTM Gasket Snap Strip ExoTecTM Top Hat FIGURE 7 TOP HAT AND PANEL FIXING DETAIL FOR EXOTECTM PANELS 9mm ExoTecTM Facade Panel ExoTecTM Gasket Snap Strip 9 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE 7.2 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 ExoTecTM 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 ExoTecTM Facade Panel, refer to page 4 for recommended sealants. EHGxaaotsTkaeenctdTMSEnxTaoopTpeSctrTMip. HWRAaerBadtTMiheeTMBr BoWaarrradriper or HardieTM Backing Strip HardieTM Top Hat Intermediate 9FamcmadEexPoaTenceTMl FIGURE 9 TYPICAL PANEL AND FRAMING LAYOUT 10 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE 7.3 FASTENER SPACINGS Table 5 indicates the maximum fastener spacings at sheet edges and at intermediate JH top hats for wall and soffit applications. TABLE 5 - WALLS & SOFFIT Fastener Spacings for Wall and Soffit Application Design Wind Pressure (kPa) Top Hat Spacing (mm) WALLS Max. Fastener Spacing (mm) SOFFITS Max. Fastener Spacing (mm) 1.0 600 1.5 600 2.0 600 2.5 600 3.0 600 600 600 600 600 575 550 450 425 350 350 3.5 *600 350* N/A 3.5 450 450 425 4.0 450 4.5 450 400 375 350 325 5.0 450 5.5 450 6.0 450 300 300 275 275 250 250 6.5 400 7.0 400 250 250 250 250 NOTES TO TABLES 2, 3 AND 5 1. Top hat deflection for serviceability limit state design to AS 1170.2 is limited to span/250, except where * is shown it is span/180. 2. Design wind pressures to be in accordance with AS 1170.2 for ultimate strength design. 3. For permissible design wind pressure, divide the ultimate strength design wind pressures by 1.5. 4. For higher design wind pressures (ultimate), contact James Hardie on 13 11 03. 7.4 FASTENING METHODS Panels may be fixed to ExoTecTM Top Hats and HardieTM Intermediate Top Hats by either: 1. Countersunk fasteners: flush finished over screw heads with a suitable epoxy, and then with HardieTM Base Coat. Generally used with siteapplied acrylic coatings. NOTE: Countersunk fastening is not suitable for pre-finished facade panels. 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. Contact fastener manufacturers for more information. Countersunk Fasteners NOTE: 1. Mark fastener locations as specified. 2. Drill clearance holes into ExoTecTM 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. 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. 6. Cover countersink fastener with epoxy leveled flush with sheet. To accommodate for second coat do not overfill hole. Allow epoxy to cure. 11 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE ExoTecTM Top Hat HardieTM Wrap Weather Barrier or RABTM Board ExoTecTM Gasket Snap Strip FIGURE 11 COVER COUNTERSINK FASTENER WITH EPOXY 7. Apply HardieTM Base Coat over epoxy using the base coat applicator. See Figures 12, 13, and 14. FIGURE 15 COUNTERSUNK FASTENER DETAIL Do not use hammer action. FIGURE 12 FIX BASE COAT APPLICATOR OVER EPOXY FILLED SCREW HEAD FIGURE 16 DRILL CLEARANCE HOLE HardieTM Facade Washer Screw Pre-drilled hole FIGURE 13 APPLY HARDIETM BASE COAT OVER EPOXY FILLED SCREW HEAD FIGURE 17 WASHER AND SCREW INSTALLATION ExoTecTM Top Hat HardieTM Wrap Weather Barrier or RABTM Board FIGURE 14 SCREW HEAD COVERED BY EPOXY AND JH BASE COAT 8. Sand HardieTM Base Coat smooth when cured with 100-120 grit sandpaper. HardieTM Facade Washer ExoTecTM Gasket Snap Strip FIGURE 18 EXPOSED HEAD FASTENER DETAIL 12 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE HardieTM Fascade Washer 7.5 BACKING STRIP INSTALLATION At horizontal panel joints, ExoTecTM Backing Strips are adhered along the back top edge of the ExoTecTM Facade Panel prior to panel installation. The HardieTM Backing Strip is cut the width of the panel. 70mm Sealant fill the back of the rolled stop at each end 50mm long with 3mm sealant bead. 50mm Apply a continuous 6mm diameter bead of polyurethane sealant to the backing strip below the stop. FIGURE 19 APPLYING SEALANT TO EXOTECTM BACKING STRIP 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 EXOTECTM BACKING STRIP END DETAIL Fix the HardieTM Backing Strip to the back top edge of the ExoTecTM facade pan.el Ensure the HardieTM Backing Strip stop is resting on the ExoTecTM Facade Panel top edge. 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. FIGURE 20 APPLYING SEALANT TO HORIZONTAL JOINT Install ExoTecTM Facade Panel Apply a continuous 6mm diameter bead of polyurethane sealant to the backing strip above the stop. Fix next course of panels to HardieTM Backing Strip above the stop. 100mm 100mm Do not fix fasteners through the HardieTM Backing Strip. Ensure the ends of the HardieTM Backing Strip cover and seal up against the vertical neoprene gasket strips. FIGURE 22 INSTALLING NEXT COURSE OF PANELS DETAILS 13 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE 7.6 JOINTS AND JUNCTIONS 7.6.1 Joints 100 nom. typ. 10 nom. typ. Keep fastener above HardieTM Backing Strip HardieTM Backing Strip Continuous horizontal sealant bead 6mm nom. diameter Apply 6mm diameter sealant bead along the backing strip along the expresed joint 3mm continuous sealant fillet to lower panel and within roll for 50mm at each end Bond backing strip to panel with continuous polyurethane sealant 6mm nom. diameter HardieTM Wrap Weather Barrier 9mm ExoTecTM Facade Panel ExoTecTM top hat or HardieTM Intermediate Top Hat HardieTM Wrap Weather Barrier Joint sealant over bond breaker tape for 4.0kPa and above. ExoTecTM Top Hat and ExoTecTM Gasket Snap Strip 9mm ExoTecTM Facade Panel 100 nom. typ. FIGURE 23 HORIZONTAL PANEL JOINT DETAIL FIGURE 24 PANEL JOINTS IN HIGH WIND LOAD AREAS DETAIL HardieTM Intermediate Top Hat Allow for structural movement in the HardieTM Wrap Weather Barrier across joint Sealant over backing rod sized to suit joint Structural joint in structure as required by engineer 0.7mm corrosion resistant metal angle 50 x 30 legs HardieTM Intermediate Top Hat 150 max. 10 nom. joint Continuous sealant bead FIGURE 25 VERTICAL STRUCTURAL JOINT DETAIL 14 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE Insert HardieTM Wrap Weather Barrier over and under step flashing A Step flashing B Pop rivet Continuous sealant bead 150 min. upstand Specified creep +5mm 40mm lap HardieTM Wrap Weather Barrier Pop rivets Sealant beads ExoTecTM Top Hat or HardieTM Intermediate Top Hat 9mm ExoTecTM Facade Panel ExoTecTM Top Hat 3mm continuous sealant fillet 10 min. overlap A Step flashing FIGURE 27 SECTION AA Specified creep +5 10 20 100 nom. B 10 HardieTM Wrap Weather Barrier Pop rivets Sealant beads HardieTM Weather Barrier FIGURE 26 HORIZONTAL STRUCTURAL JOINT DETAIL ExoTecTM Top Hat Pop rivets Step flashing FIGURE 28 SECTION BB Colorbond flashing 15 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE 7.6.2 Junctions Base Slab Junction This junction can be treated in a number of ways, two of which are illustrated in Figures 29 and 31. HardieTM Intermediate Top Hat ExoTecTM Top Hat HardieTM Intermediate Top Hat ExoTecTM Top Hat RABTM Board or HardieTM Wrap Weather Barrier Base flashing behind HardieTM Wrap Weather Barrier RABTM Board or HardieTM Wrap Weather Barrier Base flashing behind HardieTM Wrap Weather Barrier ExoTecTM Facade Panel ExoTecTM Facade Panel FIGURE 29 WALL BASE TYPICAL CUTAWAY DETAIL 1 FIGURE 31 WALL BASE CUTAWAY TYPICAL DETAIL 2 RABTM Board or HardieTM Wrap Weather Barrier 9mm ExoTecTM Facade Panel ExoTecTM or HardieTM Intermediate Top Hat Extend ExoTecTM Gasket Snap Strip the length of the ExoTecTM Facade Panel FIGURE 30 WALL BASE TYPICAL DETAIL 1 Metal flashing behind ExoTecTM Top Hat sealed to edge of slab 150mm min. upstand 16 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE RABTM Board or HardieTM Wrap Weather Barrier 9mm ExoTecTM Facade Panel ExoTecTM or HardieTM Intermediate Top Hat 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 33. Metal flashing behind ExoTecTM Top Hat sealed to edge of slab 150mm min. upstand RABTM Board or HardieTM Wrap Weather Barrier 9mm ExoTecTM Facade Panel ExoTecTM or HardieTM Intermediate Top Hat FIGURE 32A WALL BASE TYPICAL DETAIL 2 FIGURE 33 WALL DEFLECTION HEAD USED UNDER SLAB Alternative Detail: For more information on HardieTM Edge Trim please refer to the HardieTM Edge installation guide available at www.jameshardie.com.au 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 34. Ensure the ExoTecTM Gasket Snap Strip is installed to the bottom of the fascia panel. Metal flashing behind ExoTecTM Top Hat sealed to edge of slab 150mm min. upstand RABTM Board or HardieTM Wrap Weather Barrier 9mm ExoTecTM Facade Panel ExoTecTM or HardieTM Intermediate Top Hat 9mm ExoTecTM Facade Panel HardieTM Edge Trim ExoTecTM Gasket Snap Strip RABTM Board or HardieTM Wrap Weather Barrier Metal flashing behind ExoTecTM Top Hat or HardieTM Intermediate Top Hat 150mm min. upstand For max. fastener spacing, refer to respective Soffit Lining Installation Guideline. 75mm FIGURE 32B WALL BASE TYPICAL DETAIL 2 WITH HARDIETM EDGE TRIM FIGURE 34 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. 17 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE Wall Junction 9mm ExoTecTM Facade Panel 1.0mm corrosion resistant metal angle Top hat fixing to structure to engineers detail HardieTM Intermediate Top Hat 10 min. 40 min. 10 nom. joint HardieTM Wrap Weather Barrier 100 max. Continuous sealant bead Polyrethane sealant over backing rod sized to suit joint. Metal angle fixed to wall Sealant Top hat fixing to structure to engineers detail HardieTM Intermediate Top Hat HardieTM Wrap Weather Barrier 150 max. 9mm ExoTecTM Facade Panel Sealant over bond breaker tape FIGURE 35 PLAN VIEW: STEP FLASHING TO MASONRY WALL FIGURE 36 PLAN VIEW: ABUTTING TO MASONRY WALL 18 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE 7.7 EXTERNAL CORNERS This section contains various methods of finishing external corners using the ExoTecTM Facade Panel and fixing system RABTM Board or HardieTM Wrap Weather Barrier HardieTM Intermediate Top Hat 1mm corrosion resistant metal angle RABTM Board or HardieTM Wrap Weather Barrier HardieTM Intermediate Top Hat ExoTecTM Facade Panel Continuous sealant beads 12mm across face Max. half of top hat spacing ExoTecTM Facade Panel FIGURE 37 EXTERNAL CORNER CUTAWAY DETAIL FIGURE 39 NON SQUARE EXTERNAL CUTAWAY CORNER 9mm ExoTec Facade Panel HardieTM Intermediate Top Hat Top hat fixing to structure to engineers detail Continuous sealant bead Structure rigid at corners, e.g. bolted together RABTM Board or HardieTM Wrap Weather Barrier HardieTM Intermediate Top Hat 9mm ExoTecTM Facade Panel HardieTM Intermediate Top Hat RABTM Board or HardieTM Wrap Weather Barrier HardieTM Intermediate Top Hat 10 nom. joint Top hat spacing 40 min Top hat spacing Min. 75x75mm L section 1mm min. thick corrosion resistant metal angle FIGURE 38 EXTERNAL CORNER DETAIL FIGURE 40 NON SQUARE EXTERNAL CORNER 19 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE 7.8 INTERNAL CORNERS RABTM Board or HardieTM Wrap Weather Barrier HardieTM Intermediate Top Hat 9mm ExoTecTM Facade Panel FIGURE 41 INTERNAL CORNER CUTAWAY DETAIL HardieTM Intermediate Top Hat RAB BoardTM or HardieTM Wrap Weather Barrier 9mm ExoTecTM Facade Panel HardieTM Intermediate Top Hat FIGURE 42 INTERNAL CORNER DETAIL 20 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE 7.9 WINDOWS The ExoTecTM 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 43 53. This is a guide only. All windows are different and sufficient provision for moisture management must be made. Install HardieTM Wrap Weather Barrier as per the HardieTM Wrap Weather Barrier Technical Data Sheet and relevant standard and code Cut HardieTM Wrap Weather Barrier or RABTM Board around window opening and above window opening to the window head flashing up stand height Fix flexible flashing tape continuously to the side of the window and HardieTM Wrap Weather Barrier or RABTM Board from the bottom of the window head flashing upstand Tape HardieTM Wrap Weather Barrier continuously to subframe using flexible tape, refer to flexible tape manufacturer for suitability and install instructions FIGURE 43 INSTALLATION OF HARDIETM WRAP WEATHER BARRIER FIGURE 45 HEAD INSTALLATION OF WINDOW STEP 6 Install head flashing above window STEP 5 Install window to manufacturer's specifications STEP 4 Install window sill STEP 9 Seal around head flashing corner with flexible tape FIGURE 44 INSTALLATION OF WINDOW FIGURE 46 INSTALLATION OF WINDOW 21 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE Fix HardieTM Wrap Weather Barrier flap over window head flashing Install next layer of HardieTM Wrap Weather Barrier. Provide minimum 150mm overlap 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. NOTE: This applies only to HardieTM Wrap Weather Barrier. When using RABTM Board tape the head flashing to the panel using a suitable flashing tape. J profile section STEP 15 Apply double sided tape or sealant bead to outward facing flange. FIGURE 47 PREPARATION AROUND WINDOW FIGURE 49 INSTALLATION OF J SECTION 60 mm 35 mm 25 mm HardieTM Intermediate Top Hat HardieTM Intermediate Top Hat Flexible tape 50 mm STEP 12 Fix HardieTM Intermediate Top Hat 50mm from side of window STEP 13 Fix ExoTecTM Top Hats hard against HardieTM Intermediate Top Hat above and below window Additional top hats may be needed depending on top hat spacing. ExoTecTM Top Hat ExoTecTM Gasket Snap Strip STEP 16 Cut ExoTecTM Gasket Snap Strip around window and sill STEP 17 Apply sealant between window and ExoTecTM Gasket Snap Strip 19 mm FIGURE 48 INSTALLATION OF TOP HATS AROUND WINDOW FIGURE 50 INSTALLATION OF SNAP ON STRIP 22 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE RAB BoardTM or HardieTM Wrap Weather Barrier HardieTM Wrap Weather Barrier or RAB BoardTM ExoTecTM Top Hat ExoTecTM Top Hat or HardieTM Intermediate Top Hat 9mm ExoTecTM Facade Panel of this manual. Install ExoTecTM Facade Panel under window sill Install ExoTecTM Facade Panel Tape HardieTM Wrap Weather Barrier to sub structure ExoTecTM Facade Panel RAB BoardTM or HardieTM Wrap Weather Barrier FIGURE 51 OVERVIEW CUTAWAY SECTION OF WINDOW HardieTM Wrap Weather Barrier or RABTM Board continuously taped to side window 35 9mm ExoTecTM HardieTM Facade Panel Intermediate Top Hat ExoTecTM Top Hat or HardieTM Intermediate Top Hat 9mm ExoTecTM Facade Panel HardieTM Wrap Weather Barrier or RAB BoardTM FIGURE 53 CROSS SECTION OF WINDOW ExoTecTM Gasket Snap Strip trimmed to profile Flexible tape fixing HardieTM Wrap Weather Barrier to side of window back of ExoTecTM Gasket Snap Strip FIGURE 52 WINDOW JAMB DETAIL 23 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE 8 Finishing 7.10 PARAPET DETAILS Metal capping Timber support Metal hold-down clips Parapet lining behind ExoTecTM Facade Panel FIGURE 54 PARAPET CAPPING CUTAWAY DETAIL 1 Metal hold down clips screw through clearance hole in 9mm ExoTecTM Facade Panel 8.1 GENERAL Painted ExoTecTM Facade Panels ExoTecTM Facade Panels will readily accept a wide variety of applied finishes, including site-applied textures and factory finishes. For site-applied finishes (acrylic coatings), follow the paint manufacturer's recommended advice to adequately cover the sanded smooth HardieTM 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. For further information contact the relevant paint manufacturer. Pre-finished (3rd Party) ExoTecTM Facade Panels Polyurethane paints are not suitable as a site-applied finish, but can be factory coated prior to installation. It is the responsibility of the applicator to ensure that the paint is compatible with the existing factory-applied sealer and primer on the Exotec surface, and that the panel surface will achieve the desired finish. This may require additional processing such as sanding. James Hardie does not warrant the finish nor performance of the coating. Pre-finished panels are generally installed using colour-matched exposed head fasteners. Some environments require special coatings. Painting selection and specifications are dependant on the paint chosen. Refer to the paint manufacturer. Fixing tiles onto ExoTecTM Facade Panels is not recommended. 8.2 PANELS EXPOSED TO DIRECT SUNLIGHT The ExotecTM panels must not be left unfinished while 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 ExoTecTM Facade Panels. 9mm ExoTecTM Facade Panel ExoTecTM Top Hat or HardieTM Intermediate Top Hat HardieTM Wrap Weather Barrier or RAB BoardTM FIGURE 55 PARAPET CAPPING DETAIL 1 24 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE 9 Maintenance 8.3 COASTAL AND ALPINE AREAS In coastal areas located within 1km* of the shoreline or large expanses of salt water (e.g. Port Phillip Bay, Sydney Harbour east of the Spit and Harbour Bridges, Swan River wet of the Narrows Bridge), one of the following is required: All horizontal and vertical expressed joints must be filled with a suitable sealant, refer to the sealant filled joints section within this specification. Where both the horizontal and vertical expressed joints are not filled, the joints and panels must be washed down twice a year. On unprotected walls, rain will perform this washdown, but where walls are protected by soffits above, the washdown twice per year is a maintenance requirement. All ExoTec panels must be coated within 90 days or within 7 days if located within 1km of a coastal area or corrosive environment. 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: In coastal areas, a six monthly washdown of expressed joints must be done as per Clause 8.3. of this installation guide. Annual checks and maintenance for the exposed sealant (3mm fillet at horizontal joints, filled vertical and horizontal joints) referenced in Clauses 7.5 and 7.6, must be done as required by the sealant manufacturer. If using an alternative sealant, it must be a quality polyurethane sealant compatible with fibre cement and the specified paint system if coated. Please refer to the manufacturer's instructions for further information. 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 ExoTecTM Facade Panels. Maintain sealant as per manufacturer recommendations, to ensure weather seal. Clean out gutters, blocked pipes and overflows as required. More frequent resealing may be required for panels installed in harsher environments, for example, coastal areas, exposure to chemicals or pollutants. 25 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE Notes 26 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE 27 HARDIETM EXOTECTM FACADE PANEL INSTALLATION GUIDE For information and advice call 13 11 03 | jameshardie.com.au Australia May 2024 © 2024 James Hardie Australia Pty Ltd ABN 12 084 635 558 TM and ® denote a trademark or registered mark owned by James Hardie Technology Limited.