Knauf Direct Bonding and Metal Furring

Transcription

1 Knauf Direct Bonding and Metal Furring Knauf Direct Bonding and Metal Furring Linings are the simplest and quickest of drylining systems to install. They are suitable for most brick, block and concrete backgrounds and will work with a wide range of s. Insulating Laminates Our range of high-efficiency Insulating Laminate boards provide instant energy savings. Plasterboard Adhesive Adhesive is used to quickly bond s or Metal Furring Channels to masonry backgrounds. The full range of acoustic, fire resistant, moisture resistant and impact resistant boards to provide performance and design solutions. Metal Furring Channel. 88 Direct Bonding and Metal Furring

2 Direct Bonding Knauf Direct Bonding provides a high-quality, robust lining in the shortest possible time frame, speeding up projects. If a board must be mechanically fixed, then can be used. Key Features Quick and economical to install Easily accommodates services No need to mechanically fix to background Does not take up valuable room area Finishing Our complete range of finishing products includes hand-applied jointing, plaster and ready-mixed solutions. See our full guide on page 210., Other Components The Knauf Jointing range ensures that strong, highquality joints are easy to achieve. Use Knauf Gypsum Parge Coat to seal masonry walls, ensuring all gaps are filled, especially at junctions and corners. Knauf Sealant seals gaps, minimises airborne sound transmission and vibrations. Other Wall Lining Systems: Wall Liner 98 Independent I Stud 104 Insulating Laminates 112 Wet Area Partitions 184 Acoustic and Aesthetic Linings 194 Direct Bonding and Metal Furring 89

3 Knauf Direct Bonding and Metal Furring Installation Procedures Knauf linings are designed to be simple and fast to install. Knauf Technical Services are on hand should you have any questions or unusual situations to deal with. General Knauf Direct Bonding and Metal Furring lining systems must be installed in accordance with Knauf s recommendations and the recommendations of BS 8212: 1995 and BS 8000: Part 8: Preparation Pre-treat backgrounds if necessary and remove all release agents. If Direct Bonding a masonry separating wall, it may be necessary to apply a coat of Knauf Gypsum Parge Coat at a minimum thickness of 6mm to the entire wall surface. Ensure all gaps are sealed, especially at junctions and corners. Knauf Gypsum Parge Coat should have a key applied, and then be allowed to set fully prior to Direct Bonding with s. In all instances, the background should be plumbed for alignment, making allowances for over-sailing high spots on the masonry. Mark guidelines on the floor and soffit to establish the new wall plane. Mark vertical guidelines on the background to establish the bonding positions as determined by lining system type and the board size and thickness as shown in the table below. Perimeter 1 A continuous band of Adhesive should be applied around the wall perimeter, service penetrations and openings to improve the airtightness and reduce the effects of cold convection currents impairing the thermal performance of the wall construction. Application of Adhesive and Boarding 2 Apply Adhesive dabs, spaced intermittently up the wall along the vertical guidelines. The size and position of the dabs will vary depending on the dry lining system being used. Direct Bonding 3,4 If Direct Bonding, dabs should be applied at 300mm vertical centres and each dab should be 250mm long and 50mm to 75mm wide. The dabs should be applied between 10mm and 25mm thick and sufficient for the fixing of one board at a time. After dabbing out and before the dabs have set, offer up the plasterboard and press firmly into place, aligning the board so that it is plumb. Ensure the plasterboard is clear of the ground by at least 10mm; this can be accommodated by an off-cut of board. Modest pressure on the plasterboard will ensure a positive bond. Knauf Insulating Laminates require secondary fixing with two mid-placed Knauf Nailable Plugs, penetrating the backgrounds through the dab by at least 40mm. Metal Furring 5,6,7, 8 When using the system, dabs should be applied at 450mm centres and each dab should be 200mm long and 50mm wide. Channels should be bedded into the dabs and continuous bands of Adhesive. These can be manipulated with a straight edge to ensure that they align with the guidelines marked on the floor. Additional lengths of Channel are positioned around service penetrations and door and window openings. Once the Adhesive has fully set (approximately 3 4 hours), s can be screw-fixed into the Metal Furring Channels using Knauf Screws at nominal 300mm centres. Fixings should be to all vertical and horizontal sections of Channel. Dab centres when direct bonding using Adhesive Thickness of Wallboard Width Adhesive Centres Row of Dabs per Board 9.5mm 900mm 450mm 3 9.5mm 1200mm 400mm mm 1200mm 600mm 3 90 Direct Bonding and Metal Furring

4 Direct Bonding Applying a continuous band of Adhesive around the perimeter. Applying Adhesive dabs at the required centres Offering up and pressing into place. Offering up Knauf Insulating Laminate for a better thermal performance. Metal Furring Applying Adhesive around the perimeter and at the required centres. Ensuring Channels are fixed plumb Fixing onto the Channel. Finishing using Knauf Plaster. Knauf Training Courses We offer a range of comprehensive training courses at our purpose-built training schools to ensure the installer is fully up to speed with the latest techniques and regulations. See page 276 for more information. Direct Bonding and Metal Furring 91

5 Knauf Direct Bonding Application Details These details represent some of the most common design situations relevant to the Knauf Direct Bonding system. Knauf Technical Services can advise on any specific detail you are trying to achieve. Dab layout Detail 1 Head and base Knauf Sealant Detail 2 Continuous band of Knauf at head and at floor to suit specification Internal corner Detail 3 Nominal 10 25mm Adhere Knauf Plasterboard to substrate with Adhesive Where you see these icons in a detail, that detail is particularly relevant to that sector. 92 Direct Bonding and Metal Furring

6 Head detail Detail 4 to suit specification Insulated Lintel 30mm Continuous band of Adhesive at head Cill Detail 5 Continuous band of Adhesive to suit specification Direct Bonding and Metal Furring 93

7 Knauf Direct Bonding Application Details These details represent some of the most common design situations relevant to the Knauf Direct Bonding system. Knauf Technical Services can advise on any specific detail you are trying to achieve. Jamb Detail 6 Continuous band of Knauf Adhesive dabs applied close to masonry corner Abutment, for non-fire-rated partition Detail 7 Abutting stud fixed through Knauf dabs with suitable fixings at maximum 600mm centres to suit specification Where you see these icons in a detail, that detail is particularly relevant to that sector. 94 Direct Bonding and Metal Furring

8 Application Details These details represent some of the most common design situations relevant to the system. Knauf Technical Services can advise on any specific detail you are trying to achieve. Dabs and channel layout Detail 8 Head and base Detail 9 Channel stops at top of wall on continuous strips of Adhesive Channel bonded to substrate with Knauf Direct Bonding and Metal Furring 95

9 Metal Furring Internal corner Detail 10 Channel bonded to substrate with Knauf External corner Detail 11 Channel bonded to substrate with Knauf Knauf Screws at 200mm centres Head detail Detail 12 Channel Knauf Screws Insulated lintel Continuous band of Adhesive at head Where you see these icons in a detail, that detail is particularly relevant to that sector. 96 Direct Bonding and Metal Furring

10 Cill Detail 13 Channel bonded horizontally under edge of cill on a continuous dab of Knauf Jamb Detail 14 bonded directly to a continuous dab of Knauf Knauf Screws Channel bonded to substrate with Knauf Direct Bonding and Metal Furring 97