Timber frame external walls - Gyproc

1 frame external wallsDry linings258 Timber frame external wallsGyproc plasterboards are used as the internal lining tostructural Timber frame external wall construction is based on a structuraltimber frame comprising factory-produced Timber panelsand components to which sheathing board and a breathermembrane is attached. The frame is tied to the externalcladding using flexible wall ties. Isover glass mineral woolinsulation is included in the stud cavity, and Gyprocplasterboard forms the internal lining. The board is either avapour check grade (such as duplex options), or is backedwith a suitable vapour control plasterboard linings are quick and easy to install,and provide a lining which can be jointed with Gyprocjointing materials to give a seamless finish ready for directdecoration. The lining can also be skimmed with plaster togive a superior, traditional down to W/m2 KlMaintains a clear wall cavitylGyproc thermal laminates can be specifiedto achieve enhanced U-values lGyproc duplex grade boards and 28mmGyproc ThermaLine platinum provide aninternal lining incorporating a vapour control layerKey factsSector GuideOfficesRetailEducationIndustrialCus todialResidential -HousingResidential - High Rise CommercialSport & LeisureHealthcareAuditoriaEntertainmentR esidential -Apartments259T 00353 1 629 8400 F 00353 1 623 7054 E frame external wallsDry and SafetySafety Data Sheets for all Gypsum Industries productsare available to download from our website.

2 Or via our Technical Sales board productsGyproc , 15mmWidth1200mmGyproc ThermaLine platinum (with integralvapour check)Thickness28mmWidth1200mmGyproc WallBoard , 15mmWidth1200mmGyproc FireLine , 15mmWidth1200mmFixing and finishing productsGyproc Drywall Timber ScrewsFor fixing boards to normal softwoods, super-dried Timber and engineered I SealantSealing airpaths for optimumsound jointing materialsFor seamless edge and angle beadsProtecting and enhancing board edgesand Skimcoat, Gyproc Carlite Finish, Gyproc Board Finish To provide a plaster skim productsIsover frame Batt 3250mm and 90mm, to achieve thermal andacoustic Cavity BarrierFor sealing the cavity between the outer brickwall and the internal Timber frame frame external wallsDry the Timber frameFactory manufactured Timber wall panels of the requireddimensions are installed to form the structural buildingframe.

3 Additional framing members are normallyincorporated into wall units during factory construction, inthe required positions, to accommodate door / windowopenings, adjoining partitions, and support heavy board and breather membrane are installed asspecified. Electrical and other services are located withinthe stud cavity. Timber noggings are installed to supportrecessed switch boxes / socket of the loadbearing Timber framework, sheathingboard and breather membrane, should be carried outaccording to established Timber frame building principleswith reference to the ITFMA (Irish Timber FrameManufacturers Association) guidelines. A number of claddingoptions are available and the method of securing or tying-back the cladding will be determined by the the insulation and liningIsover frame Batt 32 is friction-fitted in the stud are fixed to framing members using Gyproc DrywallTimber Screws as OVERVIEWFor full installation details, refer to the Installation Guide at 00353 1 629 8400 F 00353 1 623 7054 E frame external wallsDry 2 Timber frame external walls performance1 PERFORMANCER efer to section for general DetailBoard type3 Fire4, 5 Estimated laboratory Performanceresistancesound insulationsubstantiationmins100 - 3150Hz.

4 1 One layer of Gyproc WallBoard DUPLEX3050 - 55A0660012 One layer of Gyproc WallBoard DUPLEX3050 - 55A0660023 One layer of Gyproc WallBoard DUPLEX3040 - layer of Gyproc WallBoard and 6050 - 55A066007outer (face) layer of Gyproc WallBoard DUPLEX2 Inner layer of Gyproc WallBoard and 6050 - 55A066008outer (face) layer of Gyproc WallBoard DUPLEX3 Inner layer of Gyproc WallBoard and 6040 - 45A066009outer (face) layer of Gyproc WallBoard 1 The fire resistances quoted are for loadbearing walls tested with fire exposure to the internal face. Performances are for walls incorporatingtapered edge boards with all joints taped and filled according to Gypsum Industries recommendations. The quoted performances are achievedonly if Gypsum Industries components are used throughout, and the Company s fixing recommendations are strictly observed.

5 Any variationsin the specifications should be checked with Gypsum Industries. All tests were carried out with boards nailed-fixed. Screw-fixing is anacceptable alternative and minimises the risk of fixing lightweight claddings, such as Timber sidings, cementitious render etc., can be used and will offer the same standard Gyproc WallBoard is used in place of DUPLEX, a vapour control layer will be required directly behind the plasterboard, fixed to theface of the Timber fire resistance performances quoted are independent of any contribution from the external construction, but do include the joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Please refer tosection for full needs to be given to the use of 140mm Isover Metac Roll to achieve required thermal performance for an external of 100mm aggregate block (1400kg/m3) with 20mm render, tied withstainless steel wall ties across anominal 50mm clear cavity throughbreather membrane and sheathing boardto minimum 89mm x 38mm Timber studs at max 600mm centres.

6 90mm6 Isover Timber frame Roll in studcavity with internal linings as below. 100% load vertical tile hanging on treated 25mmtimberbattens fixed through breathermembrane and plywood sheathingboard to minimum 89mm x 38mmtimber studs at max 600mm centres. 90mm6 Isover Timber frame Rollin stud cavity with internal linings as below. 100% load of 103mm facing bricktied with stainless steel wall ties across anominal 50mm clear cavity throughbreather membrane and sheathing board to minimum 89mm x 38mmtimber studs at max 600mm Timber frame Roll in studcavity with internal linings as below. 100% load frame external wallsDry plasterboard linings to Timber frame external wallsare unsuitable for use in areas subject to continuouslydamp or humid are not suitable for use in temperaturesabove 49 C but can be subjected to freezing conditionswithout risk of protection For reaction to fire classifications for Gyproc and Glasrocboards please refer to Section.

7 Fire resistanceThe fire resistances given in Table 2are taken from BRE1988 guidelines document for imperforate walls tested toBS 476: Part 8: 1972, or BS 476: Parts 21 and 22: 1987, orassessments based on these insulationThe Rwratings given in Table 2are estimates forimperforate constructions and if tested in accordance with BS EN ISO 140-3: 1995, and rated in accordance with BS EN ISO 717-1: is essential for optimum sound most junctions will be sealed by standard jointingmaterials, gaps at the base of the partition or lining, at theperimeter of the floor / ceiling, and other small airpaths,can be sealed using Gyproc laboratory sound insulation data quoted was measuredin the absence of flanking transmission. The actualperformance of the building element will generally begoverned by flanking vapour controlWhere there is a requirement for a vapour control layer,DUPLEX grade boards should be specified as the face layer( the outer layer in double layer linings).

8 The application of two coats of Gyproc Drywall Sealer tothe face lining will also provide vapour propertiesIsover insulation is positioned between joists or wall studsto provide the required level of thermal key factorsTo minimise the risk of cracking at the plasterboard joints,seasoned Timber with a moisture content not exceedingthat recommended in BS 5268: Part 2: 2002should be contractor should ensure that Timber supports areaccurately spaced, aligned, and levelled. When designingtimber frame buildings, the designer should take accountof all available relevant Standards, Documents, andassociated literature. Cavity barriersCavity barriers may be required to satisfy the requirementsof national Building Regulations. A Isover Cavity Barriermay be required to seal the cavity between the outer brickwall and the internal Timber frame leaf.

9 Please refer .Service penetrationsPenetrations of fire resistant constructions for services, suchas vent pipes and flues, need careful consideration to ensurethat the fire integrity of the wall is not impaired, and alsothat the services themselves do not act as the mechanism offire spread. It is important to use only those services andtheir installations which have been shown by fire test to beable to maintain the integrity of the designing service zones through which all services pass, thenumber of individual service penetrations can be zones can be sealed after installation of the servicesusing a tested and substantial fire-stopping most situations the services will be installed bycontractors other than the dry lining contractor. It isimportant, therefore, that all relevant contractors shouldbe advised as to where and how their service penetrationsshould be made and maintained.

10 Strength and robustnessThe dimensions and assembly of Timber supports should besufficient to allow positive fixing of plasterboard withoutbounce or undue deflection because of the nailing,screwing, or other applied force. Where boards are fixed at maximum centres in adverseconditions the standard of lining can be affected. Adverseconditions can generally be described as conditions wherehigh humidity occurs, principally in the cold, damp,autumn/winter period. They also refer to buildings underconstruction over this period where both the structure andwet applications such as plastering and screeding aresubject to slow drying 00353 1 629 8400 F 00353 1 623 7054 E frame external wallsDry liningsPartition junctionsWhere partition junctions occur, additional studs can bespecified within the factory-produced wall panels, and canbe incorporated either during manufacture or , a suitable ladder frame can be installedbetween vertical studs during site construction, withhorizontal members at 600mm to Timber framesA Technical Information Sheet is available from theTechnical Sales poppingLoosening of nails in Timber can occur through timbershrinkage, or as a result of fixing boards to misaligned ortwisted framing.