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GAS PROTECTION SYSTEMSVisqueen Gas Barrier Pre-Weld——65% time saving over traditional tape and roll sealing methods.——Fast track installation on site.——Reduced wastage through off-site fabrication.——Visqueen's pre-welding technology ensures high Integrity to gas membrane joints.Recent building techniques have seena tendency towards the use of offsitefabrication in many sectors ofthe building process. It seems logicaltherefore, that Visqueen BuildingProducts should, in recognising thistrend, provide an economical and timesaving solution to the needs of themodern developer who requires a provengas barrier system.With increasing numbers of housing andindustrial developments taking placeon gas contaminated sites, developersmust ensure that a high integrity gasprotection membrane is installed, yetcontinue to operate under the timerelated pressures of today’s fast trackbuilding programmes.Welding technology for joiningmembranes is well established but haspreviously only been available whenspecialist on-site contractors have beenused. It is widely recognised that joiningsheets of membranes on site is oftenthe most vulnerable element in theinstallation of a gas protection system.By working closely with the designerin early project stages, Visqueen canproduce a complete gas protectionpackage that is delivered direct to sitewhen required.The use of pre-welded sheets means thatthe designer can now have increasedlevels of confidence as all joints areconstructed in factory conditionsand have been rigorously tested forairtightness before reaching site.Additionally, as there are fewer tapedjoints to be performed on site, thegas barrier installation is less affectedby adverse weather conditions (to beeffective, taped joints must be formed indry conditions).Visqueen Gas Barrier is pre-welded inthe factory to the exact dimensions ofthe footprint to the building and can bedispatched with the correct quantities ofancillary components as required to forma high integrity gas barrier system.Factory fabrication helps reduce wastageon site and Visqueen’s factory weldedjoints ensure that a high integrity airtightbarrier is always achieved. The reducedtime for on-site jointing ensures thatfor each footprint the installation timeis significantly reduced. Each footprintcan be identified by a unique reference,thereby, ensuring that on-site ordering isstraightforward.Technical Properties - Visqueen Pre-Weld Gas Barrier JoinTensile Strength MOAT 27 1983 5.5.2Resistance to Water PressureM.O.A.T 27 983 5.1.4Resistance to 6m head of water pressure35.3 daN/50mmPass, No leaksWWW.VISQUEENBUILDING.CO.UK | 0845 302 4758 41