GypLyner IWL Independent wall lining system

Transcription

1 Independent wall lining system Photograph courtesy of Philip Brier 0

2 Independent wall lining system independent wall lining is a lightweight, nonloadbearing drylining which is erected independently of the external wall construction. The system is used in all types of building, but is particularly suitable for those with reinforced concrete or steel frames. The lining provides fire resistance to structural steel sections clad with lightweight metal sheeting, and can also be used in association with new or existing masonry walls to increase sound insulation and meet thermal performance requirements db mins W/m K Sector Office / commercial Educational Residential Healthcare Leisure Industrial Gypframe I Stud Key facts Fully independent wall lining Compatable with external wall constructions including curtain walling, rain screen claddings, industrial claddings, brickwork and glazed atriums Used to line non fire-rated service risers Used horizontally to form a corridor ceiling Provides fire protection to structural steelwork Provides fire resistance in association with external structure Used to upgrade the sound and thermal performance of an existing masonry wall Provides service void Satisfies BS 5 strength and robustness requirements up to Severe Duty

3 L SPECSURE S Y S T E M System components Gypframe metal products 8 I 50 I Stud Length 700, 000mm 0 I 50 I Stud Length 0 I 70 I Stud 00, 00mm Gyproc board products (cont d) Gyproc DuraLine Thickness, 5mm Width 00mm Gyproc ThermaLine laminates Thickness 8-5mm Width 00, 00mm 70 I 70 I Stud Length 00, 00mm Moisture resistant boards are specified in intermittent wet use areas e.g. shower cubicles. 9 I 90 I Stud Length 5000, 000mm I 80 I Stud Length 5000, 000mm Standard, Deep Flange (DC) and Extra Deep Flange (EDC) Floor & Ceiling Channels All channels are available in 00mm only. 99 FC 50 Length Fixing Channel 00mm Fixing and finishing products Gyproc Drywall Screws For fixing boards to stud framing up to 0.79mm thick. or Gyproc Jack-Point Screws For fixing boards to stud framing 0.8mm thick or greater and I studs greater than 0.55mm thick. Gyproc Wafer Head Drywall Screws For metal-to-metal fixing up to 0.79mm thick. or Gyproc Wafer Head Jack-Point Screws For metal-to-metal fixing 0.8mm thick or greater and I studs greater than 0.55mm thick. GFS Fixing Strap or GFT Fixing T Length 00mm Gyproc Sealant Sealing air paths for optimum sound insulation. Gyproc jointing materials For seamless jointing. GA5 Internal Fixing Angle Length 00mm Gyproc edge beads Protecting and enhancing board edges. GA Splayed Angle Length 00, 00mm Gyproc Control Joint To accommodate structural movement. Gyproc board products Gyproc FireStrip For fire-stopping deflection heads. Gyproc WallBoard Thickness Width.5, 5mm 900, 00mm Thistle Board Finish or Thistle Multi-Finish To provide a plaster skim finish. Gyproc FireLine Thickness Width Gyproc SoundBloc Thickness Width.5, 5mm 00mm.5, 5mm 00mm Isowool Acoustic Slabs High Performance 50mm and 75mm, for improved acoustic performance. I F E T I M E W A R R A N T Y Always use genuine branded British Gypsum components to qualify for SpecSure lifetime warranty

4 T F E bgtechnical.enquiries@bpb.com Installation overview Run of lining Gypframe Floor & Ceiling Channel is fixed at the head and base. Gypframe I Studs are friction-fitted vertically within the channel sections to form the framework. This allows for adjustment during boarding. If specified, Isowool Acoustic Slab is fitted between studs. Additional framing is installed as required to support heavy fixtures. Services Electrical and other services are normally installed at the frame erection stage. Horizontal runs are fixed to the background or can be routed through cut-outs in the studs. Gypframe 99 FC 50 Fixing Channel can be installed between studs to support recessed switch boxes / socket outlets. Boards are screw-fixed to all framing members to form the lining. Horizontal board-end joints should be backed with Gypframe GFS Fixing Strap or Gypframe GFT Fixing T. For full installation details, refer to the British Gypsum SiteBook or visit

5 Performance ( Refer to - Basic principles of system design) Table Maximum heights for Gypframe I Studs at 00mm centres Stud type.5mm boards 5mm boards ThermaLine laminates single double single double single 8 I I I I I I SPECSURE Based on a limiting deflection of L/0 at 00Pa. For heights of 00mm or greater, Gypframe Deep Flange (DC) or Extra Deep Flange (EDC) Floor & Ceiling Channel should be used at the head and base. L I F E T I M E S Y S T E M W A R R A N T Y Table U-values for external claddings with lining / insulation combinations - based on a well vented lining cavity External cladding ThermaLine Lining thickness Isowool Acoustic Slabs - U-value laminate mm High Performance W/m K Curtain walling/ concrete cladding/ panels/brickwork/ blockwork, etc ThermaLine SUPER 50 50mm (with Gypframe 8 I 50 Studs) 0. ThermaLine PLUS 5 75mm (with Gypframe 70 I 70 Studs) 0.5 ThermaLine PLUS 0 00mm (with Gypframe 9 I 90 Studs) 0. ThermaLine BASIC 50mm (with Gypframe 8 I 80 Studs) 0. U-values are calculated by proportional area method. Contact the British Gypsum Drywall Academy Advice Centre for U-value calculations on specific constructions including insulated render systems and stone claddings. NBS work section K0 - Plasterboard drylinings / partitions / ceilings

6 T F E bgtechnical.enquiries@bpb.com EN BS Table Linings to structural steel columns Board linings to one side of Gypframe I Stud framework and 50mm Isowool Acoustic Slabs - High Performance, forming an independent lining to structural steel columns, in association with external steel cladding. Lining as in table. SPECSURE Detail Board Lining Duty System type thickness rating reference mm Fire resistance 0 minutes integrity : 0 minutes insulation WallBoard x.5 Severe B00 L I F E T I M E S Y S T E M W A R R A N T Y SoundBloc x.5 Severe B00 WallBoard x 5 Severe B00 SoundBloc x 5 Severe B00 Fire resistance 0 minutes integrity : 0 minutes insulation FireLine x.5 Medium B05 FireLine or DuraLine x 5 Heavy B0 Fire resistance 90 minutes integrity : 0 minutes insulation EN BS EN BS EN BS FireLine x.5 Severe B07 FireLine or DuraLine x 5 Severe B08 The fire resistances apply to external walls, whose construction incorporates structural steel sections with a profiled steel cladding, when the inside of the wall is exposed to fire. Where the external wall is more than m from the boundary, Building Regulations allow relaxation of the provision for insulation to 5 minutes in certain circumstances. The figures quoted relate to the complete wall structure including the external cladding. The lining also offers fire protection to steel columns up to section factor 00m -. Refer to Table. For improved durability and impact resistance, the outer layer of board can be replaced with a layer of Gyproc DuraLine of equivalent thickness. NB The fire resistance and sound insulation performances are for imperforate partitions, walls and ceilings incorporating boards with joints taped and filled, or skimmed according to British Gypsum s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the Company s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum. NBS work section K0 - Plasterboard drylinings / partitions / ceilings 5

7 Performance ( EN BS Refer to - Basic principles of system design) Table Fire protection to structural steel Board Lining thickness Fire resistance Section factor type mm mins A/V (Hp/A) m - FireLine x.5 0 Up to 00 WallBoard or SoundBloc x.5 0 Up to 00 FireLine x.5 0 Up to 00 FireLine x.5 90 Up to 00 (BS only) FireLine x 5 90 Up to 00 Based on four sided profile exposure. Protection is afforded to universal column sections as described in BS : Part : 980. Based on critical temperature 550ºC (information on other critical temperatures is available). SPECSURE NB The fire resistance and sound insulation performances are for imperforate partitions, walls and ceilings incorporating boards with joints taped and filled, or skimmed according to British Gypsum s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the Company s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum. BS L Table 5 Linings to masonry construction I F E T Single or double layer board to one side of Gypframe I Stud framework and 50mm Isowool Acoustic Slab - High Performance forming an independent lining to masonry construction. Lining as in table. I M E S Y S T E M W A R R A N T Y Detail Board Lining Approx. Sound insulation Duty System type thickness weight R w (R w + Ctr) rating reference mm kg/m db 80 minutes fire resistance BS WallBoard x.5 59 (5) Medium B00 WallBoard x 5 59 (5) Medium B00 WallBoard x.5 0 (5) Severe B0 WallBoard x 5 (5) Severe B0 The fire resistance quoted is that provided by the masonry wall without contribution from the lining. NB The fire resistance and sound insulation performances are for imperforate partitions, walls and ceilings incorporating boards with joints taped and filled, or skimmed according to British Gypsum s recommendations. The quoted performances are achieved only if British Gypsum components are used throughout, and the Company s fixing recommendations are strictly observed. Any variation in the specifications should be checked with British Gypsum. NBS work section K0 - Plasterboard drylinings / partitions / ceilings

8 T F E bgtechnical.enquiries@bpb.com Design Planning - key factors The position of services should be pre-determined and their installation planned into the frame erection stage. It is important that all parts of the lining system, including the thermal insulation, should remain independent of the external walling. The lining is erected with the external walling in place and the windows and doors fixed. Where the lining is used in specialist applications e.g. as a horizontal corridor ceiling, please contact the British Gypsum Drywall Academy Advice Centre for span and boarding specification data. Extended heights Where the wall height exceeds the available length of I stud, sections of stud can be spliced together to the required length using 00mm lengths of the appropriate floor and ceiling channel, fixed with four Gyproc Wafer Head Drywall Screws in each flange to each side. See Construction details -. Where greater heights than listed in Table are required, the lining will need to be braced back to the structure. Note that the system is non-loadbearing and should not be used to provide lateral restraint to masonry or other external wall constructions. Acoustic performance GypLyner IWL can be used as an independent lining to improve the sound insulation of new or existing masonry walls. Acoustic testing on a basic masonry wall construction achieving R w 5dB sound insulation gave a db improvement when the wall was lined with GypLyner IWL (single board). A db improvement was achieved with a double layer lining. Please contact the Drywall Academy Advice Centre for details. Special detailing is required at junctions with sound insulating partitions in order to maintain acoustic performance. See Construction details -. Cavity barriers Cavity barriers should be included where necessary. If both sides of the cavity are formed by non-combustible or Class 0 materials, barriers are necessary only every 0m. The nature of the barrier and its fixing should not detract from the general performance of the wall. Refer to 7 Cavity fire barriers. Fixing floor and ceiling channels Floor channels must be securely fixed with a line of fixings at 00mm maximum centres. With 8mm and 9mm channels, two rows of staggered fixings are required, each line at 00mm centres and each fixing 5mm in from the flange. If the floor is uneven, a 8mm thick timber sole plate, equal to the width of the channel, should be used. If the concrete or screeded floor is new, consideration should be given to the installation of a damp proof membrane between the floor surface and the channel or sole plate. Head channels must be securely fixed at 00mm maximum centres. With 8mm and 9mm channel, two lines of staggered fixings are required, each line at 00mm centres and each fixing 5mm in from the flange. Damp or rain penetration In refurbishment projects, where damp or rain penetration may exist, normal corrective measures, such as a new damp course, tanking, or external wall coating, should be taken prior to the installation of the dry internal lining. If this is not possible, the cavity between the external wall and the lining system will need to be drained and ventilated to the outside. Thermal performance Uncontrolled air movement through the drylining cavity can result in excessive heat loss from the building. This can be reduced in practice if the abutting elements and the background are well fitted, and junctions are sealed. When the perimeter of the cavity is to be sealed by the drylining contractor the recommended method is to apply a continuous fillet of Gyproc Dri-Wall Adhesive or Gyproc Sealant to the perimeter of the external wall and around any openings. The designer should also specify a method of restricting air movement around the perimeter of suspended timber floors, such as the provision of a flexible seal between the floor and walls. Insulation Isowool Acoustic Slabs - High Performance are inserted to a friction-fit within the stud cavity. The slabs are self-supporting, receiving internal support from the stud flanges, except where 50mm insulation is fitted into Gypframe 9 I 90 I Studs or Gypframe I 80 I Studs. In this case, a 50mm x 50mm strip of Isowool Acoustic Slab is inserted to retain the slab, see Construction details - 5. With Gypframe I 80 I Stud, two strips of insulation should be inserted to retain the slab. Services The stud cut-outs can be used for services provided that the Isowool insulation remains in place. The positioning of stud cut-outs is shown in Construction details -. Both horizontal and vertical services can be included behind the lining system, and accessed via a fire-rated Gyproc Profilex Access Panel (or similar). See Construction details - 0. Surface mounted services should be located against the plasterboard lining, and fixed through the lining to the stud framework. Any interruptions in the lining integrity will downgrade its performance. The installation of electrical services should be carried out in accordance with the recommendations of the Institution of Electrical Engineers. Refer to.5 Service installations. Fixtures Lightweight fixtures can be made directly to the lining. Medium weight fixtures can be made to Gypframe 99 FC 50 Fixing Channel. Heavy fixtures should be made to the metal studs or independent framing installed before boarding. Refer to.. Robustness, Fixings into drywall systems. Board finishing Refer to 0 Finishing systems and decorative effects. Deflection heads The system can accommodate deflection at the head with suitable detailing incorporating Gypframe Deep Flange or Extra Deep Flange Floor & Ceiling Channels. Please contact the British Gypsum Drywall Academy Advice Centre for guidance. Please refer to - Basic principles of system design for general guidance. 7

9 Construction details Service cut-outs (all dimensions in mm) 500 Centres at 00mm thereafter 900 Extending Gypframe I Studs mm min. splice mm Stud 0mm Stud 70mm Stud 9mm Stud mm Stud Junction of profiled steel decking concrete floor and external wall Internal lining to curtain walling Retaining insulation in Gypframe 9 I 90 I Studs Window opening (vertical section) NB Gyproc plasterboard Gypframe Floor & Ceiling Channel External wall construction Ventilated cavity Gyproc plasterboard ceiling Timber sole plate Glasroc FireCase S soffit support Floor screed Service cut-out dimensions are the same for Gypframe C and I Studs Skirting Gypframe I Stud Gyproc Wafer Head Jack-Point Screws Isowool Acoustic Slab packer Window unit Gyproc edge bead Timber head piece Isowool Acoustic Slab - High Performance

10 T F E bgtechnical.enquiries@bpb.com 7 Window opening (horizontal plan section) 8 5 Typical internal cladding to concrete column 9 Typical internal cladding to steel column 0 Typical access panel Partition junction standard detail Partition junction acoustic detail 00mm max. 0 00mm max. 5 Gyproc plasterboard External wall construction Gypframe I Stud Window unit Gyproc Edge Bead Gypframe C Studs Steel column Gyproc Profilex Access Panel Services Gypframe GA5 Internal Fixing Angle Isowool Acoustic Slab - High Performance Gyproc ThermaLine laminate 9