UCO Vistabord Fixing Manual

Transcription

1 UCO Vistabord Fixing Manual UCO Multiflex UCO Flexabord Fibre Cement Board WALLS & CEILINGS Ceiling soffit using Vistabord at Suria KLCC, Malaysia. UAC BERHAD (5149-H) his sign endorses that the product is asbestos-free

2 contents UAC wall & ceiling linings fixing manual vistabord, multiflex & flexabord general product information scope product information accessories materials fasteners jointers board cutting & hole-forming working with power tools board cutting hole-forming vistabord, multiflex & flexabord wall installation (untiled & tiled) board layout framing fixing details jointing junctions shower recess details vistabord & flexabord flush jointed ceiling installation board layout framing fixing details jointing appendix I typical flush jointing procedure appendix II typical tile fixing procedure

3 1 fixing manual general product information SCOPE his manual covers the technical aspects for the installation of UAC fibre cement boards, namely UCO Vistabord, UCO Multiflex and UCO Flexabord in applications as untiled of tiled walls and as flush jointed ceilings. PRODUC INFORMAION UCO Vistabord UCO Multiflex UCO Flexabord Product Description Vistabord is an autoclaved Multiflex is an autoclaved Flexabord is an autoclaved cellulose fibre cement board. cellulose fibre cement board. cellulose fibre cement board. It is a sanded smooth surfaced, It is a sanded smooth surfaced, It is a unsanded surfaced, recessed edge board. square edge board. recessed edge board. Sanded Recessed edge Sanded Square edge Unsanded Recessed edge UCO Vistabord UCO Multiflex UCO Flexabord Light sanded Light sanded Unsanded Colour exture Pinkish Pinkish or creamy white Creamy white Standard Size (mm) 2440 x x x 1220 hickness (mm) 6, 9 and 12 6, 9 and 12 6, 9 and 12 Application & Selection Flush Jointed Highly recommended if Recommended Untiled Wall smooth surface is required. iled Wall Recommended Recommended Recommended Flush Jointed Ceiling Highly recommended if Recommended smooth surface is required.

4 2 fixing manual accessories MAERIALS JOINERS Jointing Compound Suitable gypsum or cement based jointing compound are recommended for flush jointing of recessed-edge boards, and for bedding perforated paper tapes and topping over fastener heads. Perforated Paper ape his type of paper tape, embedded and finished with jointing compound is suitable for flush jointing and internal corners. Woven linen and selfadhesive tapes should not be used. Foam ape Flashing Flashing, suitable for use at internal corners / junctions for water proofing. Foam Backing ape Backing Strip, suitable for use at expansion joints for tiled wall. Straight PVC Jointer* PVC jointers are available for jointing 4.5mm and 6mm thick Multiflex boards. External Corner Angle Strip* o flush join external corners, use galvanized metal perforated corner strips for general purpose areas and plastic perforated corner strips in wet areas. Internal Corner PVC Jointer For board jointing at internal corners / junctions. Plastic or Metal Casing Bead For board abutment to wall / column. Metal Plastic FASENERS Galvanized fibre cement nails 2.8mm x 30mm for fixing boards to timber frames. eks screws No.8 x 20mm or longer for fixing boards to metal frames. Angle rim For board abutment to wall / column for suspended ceiling. Shadowline Angle rim For board abutment to wall / column for suspended ceiling. Streaker No. 8 x 20mm or longer self-tapping screws for fixing boards to light gauge studs and furring channels. Other Jointers include: Expansion Joint Kit Suspended Metal Grid Framing Kit hese items are available from UAC *

5 3 fixing manual board cutting & hole forming WORKING WIH POWER OOLS UAC Fibre Cement boards can be readily cut on site with power tools. For board cutting, power circular saw with diamond tipped blade can be used. For hole-forming, power drill fitted with hole-cutter or jig saw with tungsten blade is suitable. All power cutting operations should be carried out in a well ventilated environment and with good work safety practices. Other preferred board cutting methods and examples of hole-forming technique are listed below: BOARD CING HOLE-FORMING Suitable cutting methods include the use of: (a) Score and Snap knife (b) Hand guillotine (c) Handsaw (a) For small rectangular and circular holes (a) Score and Snap knife* Score and snap cutting is a fast and efficient method, using a tungsten-tipped score and snap knife. Scored edge Steps: Drill a series of holes around the perimeter of the hole Straight edge Steps: Preferably score from the face side of the board. Score against straight edge & repeat action to obtain sufficient depth for clean break (normally 1/3 of board thickness). Snap upwards to achieve break. Clean edges with a rasp if necessary. opening required. hen tap out the waste piece from the board face. ap gently to avoid damage to board. Ensure that board edges are properly and evenly supported. (b) For large rectangular openings for wall ventilators. b) Hand Guillotine* Board can be cut with a hand guillotine to produce clean straight edges. Steps: Mark line for cutting. Align the guillotine blade along the cut-off side of the line to allow for the thickness of the blade b) Handsaw A hand saw can also be used for general cutting operations such as for small cuts and notching. Saw cuts For notching, use a handsaw first and then score along back with a score and snap knife (as illustrated) and snap upwards. Clean rough edges with a rasp. hese items are available from UAC * Score around perimeter Saw cut to corners Steps: Start with scoring around the perimeter of the opening to sufficient depth with score and snap knife. Form a large round hole at the centre of the perimeter by drilling as shown above. hen saw-cut from the centre towards the corners of the rectangular opening. ap gently to remove waste pieces from face side. Clean rough edges and radius corners with a suitable rasp.

6 vistabord 4 Untiled multiflex iled flexabord wall installation untiled & tiled W Wet area BOARD LAYO FRAMING Board can be laid vertically or horizontally as shown in figures 1 & 2 respectively. For both vertical and horizontal layout: imber or steel framing can be used. window Studs must be firmly secured to top and bottom runners and frames must not reply on the sheeting for stability. Fix boards to studs only, stud spacing must not exceed 610mm centres Figure 1: Board Layout Vertical Provide a row of noggings behind all vertical board joints. Note: Do not fix boards to noggings except where tiles are to be fixed to boards. End joints of boards should not coincide with corners of openings such as doors or windows to reduce joint cracks due to frame movement ( figures 1 & 2 ). Where end joints occur, they should coincide with the centre line of a stud ( figure 3 ). Board layout where height b exceeds 400mm. Board layout where height a exceeds half of the wall height. For vertical layout, nogging can be in line or staggered. For horizontal layout, nogging must be b window window a in line and boards can be laid in a brick like pattern. Centreline of stud Fix boards to studs only, stud spacing must not exceed 610mm centres Provide a row of noggings behind all horizontal board joints. Note: Do not fix boards to noggings except where tiles are to be fixed to boards. Board Figure 2: Board Layout Horizontal Note: Whilst framing and fixing details are illustrated mainly using steel studs, the same details, fasteners spacing etc, apply to timber studs. However kiln-dry timber is recommended to minimise timber shrinkage. Figure 3: Board End Joint Detail

7 vistabord 5 Untiled multiflex iled flexabord wall installation untiled & tiled (cont d) W Wet area FIXING DEAILS Nail or Screw Fixing (Untiled) Fasteners should be driven along sides ( figure 4 ) or along ends ( figure 5 ) of boards at approximately 200mm centres, and along intermediate studs at approximately 300mm centres. Do not fix to top and bottom runners or noggings. Fasteners should not be less than 12mm from board edges ( figure 3 ) and 50mm from corners. Nail or Screw Fixing (iled) Fasteners should be driven along sides ( figure 6 ) or along ends ( figure 7 ) of boards at approximately 200mm centres and also into every stud at approximately 200mm centres. Fix to top and bottom runners or noggings. Fasteners should not be less than 12mm from boards edges ( figure 3 ) and 50mm from corners. 200mm 50mm min. at corners Nogging 200mm 12mm min. 50mm min. at corners Nogging 300mm 200mm Bottom runner Bottom runner Figure 4: Nail or Screw Fixing (vertical) Figure 6: Nail or Screw Fixing (vertical) 610mm max. stud centres Nogging 610mm max. stud centres 200mm 300mm Bottom runner 200mm Noggings must be fixed in a straight line. 6mm gap 50mm min. at corners 6mm gap 200 mm 50mm min. at corners Figure 5: Nail or Screw Fixing (horizontal) Figure 7: Nail or Screw Fixing (horizontal) W Additional noggings Board 25mm above flashing or shower base Flashing Do not nail here Fill 6mm gap with Brick & Concrete Crack Sealant Figure 8: Wet Area Wall / Floor Junction Fixing in Wet Area Where wall / floor junctions are flashed such as in shower recesses, board must not be fixed to bottom runners as fasteners would penetrate the flashing. Provide additional noggings 25mm above the top of the flashing or shower base as in figure 8. he boards must be fastened to these noggings.

8 vistabord 6 Untiled multiflex iled flexabord wall installation untiled & tiled (cont d) W Wet area JOINING Jointing Details (Untiled) Jointing Details (iled) Flush Joint Vistabord / Flexabord must be flush jointed using perforated paper tape embedded in between jointing compound as shown in figure 9. A typical flush jointing procedure is illustrated in Appendix I; however, flush jointing application should be carried out in accordance with the jointing compound manufacturer s instructions and recommendations. Board Joint Recessed edge is not necessary for tiled-on application. Multiflex is recommended for use as shown in figure 11. A typical tile fixing procedure is described in Appendix II; however, wall tilling application should be carried out in accordance with the tile adhesive manufacturer s instructions and recommendations. Vistabord / Flexabord Jointing compound Nogging Multiflex Wall iles Nogging Figure 9: Flush Joint Jointing compound Perforated paper tape Figure 11: Jointing Adhesive compound Expansion Joint In large untiled areas, expansion joints ( figure 10 ) must be provided at maximum 7.5 metre intervals. Expansion Joint In large tiled areas, expansion joints ( figure 12 ) must be provided at maximum 5 metre intervals. Independent frame member Independent frame member Independent frame member Independent frame member Vistabord / Flexabord Foam backing tape ypical expansion joint kit Figure 10: ypical Expansion Joint Detail Remove tube after board edges have been set Multiflex Adhesive Internal Corner Internal corners may be flush jointed using perforated paper tape embedded in jointing compound. Flexiseal sealing compound 5mm min. Ceramic tiles External Corner External corners may be flush jointed using perforated metal angles, fixed over the board edges using fasteners at 300mm centres on each side. hese should be embedded in between jointing compound to provide a smooth finish. Figure 12: ypical Expansion Joint Detail

9 vistabord 7 Untiled multiflex iled flexabord wall installation untiled & tiled (cont d) W Wet area JUNCIONS SHOWER RECESS DEAILS Jointers can be used for corners with or without flush jointing. Figures below show recommended junction details. PVC jointer Internal Corner In regularly wet areas or shower recesses, corners should be flashed with flashing strip. he flashing strip must extend into the shower tray. Metal external angles or paper tape should not be used. Metal angle Flashing strip Figure 13: Internal Corner PVC Jointer Bevel edges Multiflex W Figure 17: Flashing Detail for Shower Recesses Foam tape flashing if required Figure 14: Internal Corner Bevelled Edge Joint Where shower bases or pre-formed trays are used, an additional nogging should be provided at 25mm above the top edge of the base or tray. his will allow the bottom board to be fixed to a nogging without penetrating the shower tray. Additional nogging Vertical corner flashing angle Wall tiles External corner angle Set over if required Shower tray Do not nail here Multiflex 25mm op of shower tray Brick & Concrete Crack Sealant Floor tiles Mortar bed Figure 15: External Corner Flooring Column or Wall Abutment Figure below shows recommended column or wall abutment details. W Figure 18: Shower Recess Wall / Floor Junction External Shower ray Metal angle Flashing strip Plastic or metal casing bead Multiflex Brick & Concrete Crack Sealant Wall tiles Figure 16: Casing Bead W Figure 19: Plan View Shower Recess Corner

10 vistabord flexabord 8 flush jointed ceiling installation BOARD LAYO FRAMING Boards should be laid with their long sides at right angles to the framing structures as shown in figure 20. Framing Materials: imber or steel framing may be used. Kiln-dried timber should be chosen to minimise shrinkage. Cold formed light gauge steel section, preferably less than 1.2mm thick is recommended. Special Framing Design Considerations: Fix ceiling boards across joists, furring channel or battens. Boards should be laid out in a 'brick' or 'staggered' pattern so that adjacent end joints do not coincide. Figure 20: Board Layout Ensure that the end joints do not coincide with corners of openings (e.g. air conditioning outlets) as these joints may crack due to frame movement ( figure 21 ). Where end joints occur, they should be located on the centre line of a framing member as shown in figure 22. Boards should not be fixed to the underside of metal roof purlins or steel trusses directly. Preferably a suspended grid frame should be used. Boards should not be used as ceiling under a non-insulated metal roof. Generally, the minimum acceptable insulation requirement should be 50mm of mineral wool blanket below a layer of reflective foil. Boards should not be fixed directly to the underside of timber roof trusses or rafters. Preferably a timber batten frame should be used. Framing Requirements and Recommendations: For large areas, ceiling should be divided into bays not exceeding 10m x 7.5m ( figure 23 ). Figure 21: Board Layout Around Openings Expansion joint 1220 mm 7.5 metres max. 2440mm 10 metres max. Figure 23: Maximum Bay Size Board Figure 22: Board End Joint Detail Each bay should be able to move independent of adjacent bays and the surrounding building structures. o make allowance for this movement, an expansion joint should be formed at the perimeter of each bay. Framing structures (to which boards are fixed) must not continue across this expansion joint. Framing structure spacing for boards should not exceed 610mm centres.

11 vistabord flexabord 9 flush jointed ceiling installation (cont d) FRAMING (cont d) Framing Requirements and Recommendations (cont d) he earlier-mentioned framing requirements can be best achieved with the use of a Suspended Screw-up Metal Grid System. It employs a suspended cross rail to which furring channels are fixed. Figure 24 shows the detailing for this framing system at expansion joints. Main runner Jointing clip Furring channel Conventional timber or steel framing systems should be designed in a similar manner. Figure 25 illustrates the detailing of such framing systems at expansion joints. Expansion joints Figure 24: Expansion Joint Detail Suspended Metal Framing System Note: (for metal frame) B Where furring channels run in the same direction as the expansion joint, one furring channel must occur on A each side of the joint. Where furring channels run in the opposite direction to the expansion joint, each furring channel must break A B Expansion joint at the expansion joint. A special jointing clip which provides a slip joint Expansion joint may be used as shown in figure 24. Rafter / primary structure Cross batten Note: (for timber frame) Where battens run in the same direction as the expansion joint, one batten must occur on each side of the joint. Where battens run in the opposite direction as the expansion joint, each batten must break at the expansion joint. wo primary framing structures will be required directly above the expansion joint to support the ends of the battens as shown in figure 25. Rafter / primary structure Section A-A Expansion joint Cross batten Board Rafter / primary structure Section B-B Expansion joint Figure 25: Expansion Joint Detail Conventional Framing System Cross batten Board

12 10 vistabord flexabord 11 flush jointed ceiling installation FIXING DEAILS appendix I (cont d) JOINING Note: It is essential that flush jointing application be Step 5 carried out in accordance with the jointing compound Apply a second coat of jointing Nail or Screw Fixing Flush Joint manufacturer s instructions and recommendations compound over the head of Fasterners should be driven into each framing structure at Vistabord / Flexabord must be flush jointed using perforated though a typical flush jointing procedure is provided fastener, feathered approximately 250mm centres in the body of the board and at paper tape embedded in between jointing compound as below. approximately 50mm beyond 150mm centres across board ends ( figure 26 ). Fasteners shown in figure 30. A typical flush-jointing procedure is should not be placed less than 12mm from board ends, illustrated in Appendix I; however, reference must be made to 15mm from sides and 50mm from corners. the jointing compound manufacturer s instruction for flush- edges of the first coat. Allow to set. YPICAL FLUSH JOINING PROCEDURE Flush Jointing of Boards jointing application. Step 6 50mm min. at corners 15mm min. Apply a third and final coat of Step 1 Jointing compound Vistabord Perforated paper tape 150mm 250mm Evenly fill the recess formed by jointing compound over the the tapered edges of the joint, feathered approximately boards with jointing compound. 50mm beyond the edges of the second coat. Allow to set. Jointing compound Figure 26: Nail or Screw Fixing Figure 30: Flush Joint External Corner Expansion Joint Centre the perforated paper Sand lightly to a smooth finish Perforated metal external corner angles should be fixed over Use suitable board stopping angles at board edges where tape along the joint, and press with 150 grit abrasive paper or edges with fasteners at 300mm centres on each side. hese setting of the board edge is required ( figure 31 ). down into the fresh jointing equivalent. Step 7 Step 2 compound. Remove excess may be set over to provide a smooth finishing ( figure 27 ). and any air bubbles sandwiched beneath the tape with a broad knife, drawn along External corner angle set over the joint at a 45 angle to board surface. Sufficient compound must be left under the tape to ensure a good bond. Set over if required Flush Jointing Internal Corners Immediately apply a skim coat of jointing compound over the joint. his reduces the possibility of edge curling or wrinkling. Stopping angle ypical expansion joint kit Remove tube after board edges have been set finish with suitable internal angle tool. Step 3 Figure 27: External Corner Detail Refer to above procedure and Cover head of fasteners with a Figure 31: ypical Expansion Joint Detail coat of jointing compound. Column or Wall Abutment Recommended details for column or wall abutment are as shown in figure 28 and figure 29 below. Flush Jointing External Corners Refer to above procedure Step 4 Angle trim fixed to wall Figure 28: Column or Wall Abutment Details Shadowline angle trim Figure 29: Column or Wall Abutment Details Apply a second coat of jointing except that metal or plastic compound over the joint, external corner angle strip is feathered approximately 50mm used instead of perforated beyond edges of the first coat. paper tape. Allow to set.

13 10 vistabord flexabord 11 flush jointed ceiling installation FIXING DEAILS appendix I (cont d) JOINING Note: It is essential that flush jointing application be Step 5 carried out in accordance with the jointing compound Apply a second coat of jointing Nail or Screw Fixing Flush Joint manufacturer s instructions and recommendations compound over the head of Fasterners should be driven into each framing structure at Vistabord / Flexabord must be flush jointed using perforated though a typical flush jointing procedure is provided fastener, feathered approximately 250mm centres in the body of the board and at paper tape embedded in between jointing compound as below. approximately 50mm beyond 150mm centres across board ends ( figure 26 ). Fasteners shown in figure 30. A typical flush-jointing procedure is should not be placed less than 12mm from board ends, illustrated in Appendix I; however, reference must be made to 15mm from sides and 50mm from corners. the jointing compound manufacturer s instruction for flush- edges of the first coat. Allow to set. YPICAL FLUSH JOINING PROCEDURE Flush Jointing of Boards jointing application. Step 6 50mm min. at corners 15mm min. Apply a third and final coat of Step 1 Jointing compound Vistabord Perforated paper tape 150mm 250mm Evenly fill the recess formed by jointing compound over the the tapered edges of the joint, feathered approximately boards with jointing compound. 50mm beyond the edges of the second coat. Allow to set. Jointing compound Figure 26: Nail or Screw Fixing Figure 30: Flush Joint External Corner Expansion Joint Centre the perforated paper Sand lightly to a smooth finish Perforated metal external corner angles should be fixed over Use suitable board stopping angles at board edges where tape along the joint, and press with 150 grit abrasive paper or edges with fasteners at 300mm centres on each side. hese setting of the board edge is required ( figure 31 ). down into the fresh jointing equivalent. Step 7 Step 2 compound. Remove excess may be set over to provide a smooth finishing ( figure 27 ). and any air bubbles sandwiched beneath the tape with a broad knife, drawn along External corner angle set over the joint at a 45 angle to board surface. Sufficient compound must be left under the tape to ensure a good bond. Set over if required Flush Jointing Internal Corners Immediately apply a skim coat of jointing compound over the joint. his reduces the possibility of edge curling or wrinkling. Stopping angle ypical expansion joint kit Remove tube after board edges have been set finish with suitable internal angle tool. Step 3 Figure 27: External Corner Detail Refer to above procedure and Cover head of fasteners with a Figure 31: ypical Expansion Joint Detail coat of jointing compound. Column or Wall Abutment Recommended details for column or wall abutment are as shown in figure 28 and figure 29 below. Flush Jointing External Corners Refer to above procedure Step 4 Angle trim fixed to wall Figure 28: Column or Wall Abutment Details Shadowline angle trim Figure 29: Column or Wall Abutment Details Apply a second coat of jointing except that metal or plastic compound over the joint, external corner angle strip is feathered approximately 50mm used instead of perforated beyond edges of the first coat. paper tape. Allow to set.

14 12 appendix II Note: It is essential that tile fixing application be carried out in accordance with the tile adhesive manufacturer s instructions and recommendations though a typical tile fixing procedure is provided below. YPICAL ILE FIXING PROCEDURE It is essential that the board surface is completely free of dust, grease or other foreign matter, which may affect bonding performance, before it is tiled on. While it is not necessary to prime or seal the board surface before tiling, they must be wiped clean of dust, preferably with a damp cloth. Cleaning should be carried out just before the application of adhesive to ensure a dust-free surface. Spread adhesive with a notched spreader in a horizontal direction and in accordance with adhesive manufacturer s recommendations. Press tiles firmly into the adhesive to ensure no voids form behind the tile. Do not butt tiles closely together. Leave sufficient space (minimum 2mm) for compressible grout. Ensure that tiles do not overlap expansion joints in the backer boards. iles should be fixed at least 24 hours before grouting. Use only compressible grout. Board Nogging Wall iles Adhesive compound

15 notes

16 Flexabord application for external cladding at the Safety & Skill raining Centre, Jalan Genting Klang, Kuala Lumpur, Malaysia. Vistabord application for tile-on partitions and counters at food court, Lot 10, Kuala Lumpur, Malaysia. Curve wall cladding using Multiflex, Bukit Jalil LR Station, Kuala Lumpur, Malaysia. UAC BERHAD 3rd Floor, Menara Boustead Printed: January 2003 EL FAX WEBSIE 69 Jalan Raja Chulan Kuala Lumpur